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< Page ,Total 11 >
Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites SCIE
期刊论文 | 2025 , 284 | ACTA MATERIALIA
Abstract&Keyword Cite Version(2)

Abstract :

Developing bimetallic interfaces with high interfacial bonding strength is important for metallic composites used under harsh service conditions. However, the formation of brittle intermetallic compounds is unavoidable for some interface combinations, resulting in a significant deterioration of bonding strength. In this work, we demonstrate the development of a Cu alloy/Al alloy interface with a shear strength of 126 +/- 15 MPa - a value almost twice that reported in previous studies. The exceptional interfacial bonding strength is attributed to a special interface structure, composed of brittle intermetallic compound layers connected internally by dowels of a metastable Cu2Al3 phase, achieved via alloy design and process control. During solid-liquid composite processing, a liquid diffusion layer forms at the interface between the Cu and Al alloys. A precursor Cu4Al7Ni phase then develops at the Cu side and transforms into a metastable Cu2Al3 phase with a banded structure. Finally, layers of Cu9Al4 and CuAl2 layers form, which are fully connected to the Cu2Al3 phase. The banded arrangement of the Cu2Al3 phase acts to block crack propagation and deflect cracks into the eutectic layer and Al alloy, resulting in an ultra-high interfacial bonding strength. This work demonstrates that high interfacial bonding strength can be achieved by tailoring the interface structure instead of by decreasing the interface thickness, and thus paves a new way for developing high-performance bimetallic interfaces.

Keyword :

Bimetallic composite Bimetallic composite Cu2Al3 phase Cu2Al3 phase Cu9Al4/CuAl2interface Cu9Al4/CuAl2interface Interfacial bonding strength Interfacial bonding strength Intermetallic compounds Intermetallic compounds

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GB/T 7714 Tian, Shuke , Zhao, Fan , Wu, Guilin et al. Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites [J]. | ACTA MATERIALIA , 2025 , 284 .
MLA Tian, Shuke et al. "Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites" . | ACTA MATERIALIA 284 (2025) .
APA Tian, Shuke , Zhao, Fan , Wu, Guilin , Liu, Ming , Godfrey, Andrew , Xie, Jianxin et al. Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites . | ACTA MATERIALIA , 2025 , 284 .
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Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites Scopus
期刊论文 | 2025 , 284 | Acta Materialia
Dowel-like morphology of Cu2Al3 enhances shear strength of interfacial layers in Cu-Al composites EI
期刊论文 | 2025 , 284 | Acta Materialia
Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective SCIE
期刊论文 | 2025 , 472 | CONSTRUCTION AND BUILDING MATERIALS
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Abstract :

The mechanical behavior of graphene oxide (GO) reinforced polypropylene (PP) fibers cement-based composites was investigated by three-point bending, microscratch, and nanoindentation tests at macro, micro, and nano levels, respectively. The microstructures of the composites with GO-reinforced PP fibers were analyzed using SEM, EDS, and XRD. Both nanoindentation and microscratch tests were utilized to investigate the phase transformations in the cement matrix after adding GO. It was found that adding 0.03 wt% GO most effectively improved the mechanical properties of PP fibers cement-based composites best, and improving their strength and crack resistance of composites. In addition, statistical nanoindentation and microscratch techniques showed that GO could promoted the hydration of cement, and greatly increased the mechanical strength of hydrated calcium silicate.

Keyword :

Fiber-reinforced cement-based composites Fiber-reinforced cement-based composites Graphene oxide Graphene oxide Mechanical properties Mechanical properties Microcratch Microcratch Nanoindentation Nanoindentation

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GB/T 7714 Kang, Ran , Kong, Xiangqing , Liu, Ming et al. Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 472 .
MLA Kang, Ran et al. "Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective" . | CONSTRUCTION AND BUILDING MATERIALS 472 (2025) .
APA Kang, Ran , Kong, Xiangqing , Liu, Ming , Zhang, Mingliang , Qiao, Wanfu . Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 472 .
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Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective EI
期刊论文 | 2025 , 472 | Construction and Building Materials
Influence of graphene oxide on mechanical behavior of polypropylene fibers reinforced cement-based composites from a macro-to-micro perspective Scopus
期刊论文 | 2025 , 472 | Construction and Building Materials
A Multichannel Continuum Robot for In Situ Diagnosis and Treatment of Vascular Lesions SCIE
期刊论文 | 2025 , 11 (5) , 3071-3081 | ACS BIOMATERIALS SCIENCE & ENGINEERING
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Abstract :

In recent years, continuum soft robots have emerged as a promising avenue for the advancement of in vivo therapeutic interventions. However, the current continuum robots are often limited to singular functionalities and exhibit a deficiency in diagnostic capabilities for vascular lesions. For example, vasculitis often leads to temperature abnormalities in local blood vessels, and the existing continuum robots are unable to accurately detect the lesion area based on this characteristic. To address this issue, this paper presents the design of a multifunctional integrated thermally drawn polymer multichannel continuum robot. First, the magnetic deformation of the continuum robot was theoretically analyzed, and the robot's locomotion within a flow field was experimentally verified. Moreover, different channels of the multichannel continuum robot were independently designed for specific functions, enabling multithreaded operations. It can perform real-time sensing and monitoring of external environmental temperatures with high resolution and carry out targeted drug delivery as well as neural electrical stimulation. We successfully conducted in vitro experiments on isolated frog sciatic nerves, confirming the effectiveness of the multichannel continuum robot for biological treatment. The multichannel continuum robot shows great potential in the diagnosis and treatment of vasculitis in situ and nerve system disorder.

Keyword :

continuum soft robot continuum soft robot electrical nerve stimulation electrical nerve stimulation magneticresponse magneticresponse multifunction multifunction temperaturemonitoring temperaturemonitoring

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GB/T 7714 Liu, Wei , Luo, Qinzhou , Zhu, Xintao et al. A Multichannel Continuum Robot for In Situ Diagnosis and Treatment of Vascular Lesions [J]. | ACS BIOMATERIALS SCIENCE & ENGINEERING , 2025 , 11 (5) : 3071-3081 .
MLA Liu, Wei et al. "A Multichannel Continuum Robot for In Situ Diagnosis and Treatment of Vascular Lesions" . | ACS BIOMATERIALS SCIENCE & ENGINEERING 11 . 5 (2025) : 3071-3081 .
APA Liu, Wei , Luo, Qinzhou , Zhu, Xintao , Liu, Ming , Yao, Ligang , Wei, Fanan . A Multichannel Continuum Robot for In Situ Diagnosis and Treatment of Vascular Lesions . | ACS BIOMATERIALS SCIENCE & ENGINEERING , 2025 , 11 (5) , 3071-3081 .
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A Multichannel Continuum Robot for In Situ Diagnosis and Treatment of Vascular Lesions EI
期刊论文 | 2025 , 11 (5) , 3071-3081 | ACS Biomaterials Science and Engineering
A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests SCIE
期刊论文 | 2025 , 310 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
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Abstract :

Scratch testing is widely used for its convenience and promise but lacks analytical or semi-analytical solutions for determining the mechanical properties of materials. In this paper, by investigating the scratch-induced strain field, we propose a semi-analytical solution for the forward prediction of scratch responses and inverse characterization of plastic parameters of metallic materials. The solution is verified through finite element simulation and experimental data from eight different metallic materials. The results indicate that the method is precise, with an average error of 5.25% in the forward prediction of scratch forces and 7.48% in the inverse characterization of plastic parameters. This work provides a solid theoretical foundation for using scratch tests to assess material plasticity.

Keyword :

Finite element modeling Finite element modeling Metallic materials Metallic materials Plastic parameters Plastic parameters Scratch test Scratch test Semi-analytical solution Semi-analytical solution

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GB/T 7714 Li, Yuanxin , Zhang, Jianwei , Zhang, Yunlong et al. A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests [J]. | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES , 2025 , 310 .
MLA Li, Yuanxin et al. "A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests" . | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 310 (2025) .
APA Li, Yuanxin , Zhang, Jianwei , Zhang, Yunlong , Zhao, Minghao , Lu, Chunsheng , Liu, Ming . A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests . | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES , 2025 , 310 .
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A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests EI
期刊论文 | 2025 , 310 | International Journal of Solids and Structures
A semi-analytical solution for determining plastic parameters of metallic materials from scratch tests Scopus
期刊论文 | 2025 , 310 | International Journal of Solids and Structures
Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch SCIE
期刊论文 | 2025 , 131 (3) | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
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Abstract :

The effect of anisotropy, which is crucial for manufacturing single crystals, was investigated in this study by performing nanoindentation experiments on the Si/C plane of single crystal 4H-SiC with the edge of Berkovich indenter toward with two different crystal orientations of [1120]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[11\overline{2} 0]$$\end{document}/[1100]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[1\overline{1} 00]$$\end{document}. On the Si plane, when the edge was toward crystal orientation [1120]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[11\overline{2} 0]$$\end{document}/[1100]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[1\overline{1} 00]$$\end{document}, the indentation hardness is 39.37/39.77 GPa, the elastic modulus is 528.16/513.88 GPa, and the fracture toughness is 3.286/2.609 MPam1/2. On the C plane, when the edge was toward crystal orientation [1120]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[11\overline{2} 0]$$\end{document}/[1100]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[1\overline{1} 00]$$\end{document}, the indentation hardness is 43.66/41.91 GPa, the elastic modulus is 522.24/546.54 GPa and the fracture toughness is 2.826/2.705 MPam1/2. At the same time, the Vickers hardness crack induction method was used to calculate the fracture toughness, regardless of the Si or C plane, the fracture toughness value of the crystal orientation [1120]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[11\overline{2} 0]$$\end{document} is generally greater than that [1100]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[1\overline{1} 00]$$\end{document}. Molecular dynamics (MD) indentation simulations were carried out with the indenter edge facing different crystal directions of the Si plane. There is obvious anisotropy in the depth of the amorphous atomic layer, the number and proportion of dislocation nucleation, and the shear strain expansion. Although microscratch experiments combined with the analysis of scratch variables and the optical topography of scratches, it is concluded that the scratch deformation damage towards the crystal orientation [1100]\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$[1\overline{1} 00]$$\end{document} is smaller. This study can provide theoretical guidance for the ultra-precision machining of the anisotropy of 4H-SiC crystal structure.

Keyword :

Anisotropy of single crystal 4H-SiC Anisotropy of single crystal 4H-SiC Microscratch Microscratch Molecular dynamics simulation Molecular dynamics simulation Nanoindentation Nanoindentation

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GB/T 7714 Ni, Zifeng , Chen, Zongyu , Chen, Guomei et al. Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch [J]. | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2025 , 131 (3) .
MLA Ni, Zifeng et al. "Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch" . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 131 . 3 (2025) .
APA Ni, Zifeng , Chen, Zongyu , Chen, Guomei , Lu, Xueyu , Chen, Guohua , Liu, Ming . Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2025 , 131 (3) .
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Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch Scopus
期刊论文 | 2025 , 131 (3) | Applied Physics A: Materials Science and Processing
Influence of the anisotropy of single crystal 4H-SiC on contact responses during nanoindentation and microscratch EI
期刊论文 | 2025 , 131 (3) | Applied Physics A: Materials Science and Processing
Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/ mullite/Si environmental barrier coatings SCIE
期刊论文 | 2025 , 51 (1) , 279-289 | CERAMICS INTERNATIONAL
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Abstract :

In this work, the nanostructured Yb2O3-Yb2SiO5/mullite/Si environmental barrier coatings (EBCs) were designed and prepared by atmospheric plasma spraying. The water vapor corrosion behavior of coatings was investigated at a temperature of 1350 degrees C for durations ranging from 100 to 500 h, and the influence of phase compositions, microstructure on this behavior was systematically investigated. The results indicate that phase transformation occurs during the water vapor corrosion process, and severe corrosion takes place at the Yb2O3-Yb2SiO5 top coating and the mullite intermediate layer. Obvious diffusion reaction between Yb2O3-Yb2SiO5 and mullite layers occurred without water vapor, while the diffusion reaction cannot be observed under water vapor. The water vapor corrosion mechanism of EBCs is mainly attributed to residual thermal mismatch stresses, phase transformation resulting from sintering of Yb2O3-Yb2SiO5, as well as the formation of TGO by oxidation.

Keyword :

Atmospheric plasma spraying Atmospheric plasma spraying High temperature water vapor corrosion High temperature water vapor corrosion Nanostructured EBCs Nanostructured EBCs Yb2O3-Yb2SiO5 Yb2O3-Yb2SiO5

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GB/T 7714 Xiao, Fei , Yan, Mufu , Wang, You et al. Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/ mullite/Si environmental barrier coatings [J]. | CERAMICS INTERNATIONAL , 2025 , 51 (1) : 279-289 .
MLA Xiao, Fei et al. "Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/ mullite/Si environmental barrier coatings" . | CERAMICS INTERNATIONAL 51 . 1 (2025) : 279-289 .
APA Xiao, Fei , Yan, Mufu , Wang, You , Tang, Shawei , Liu, Ming , Zhang, Xiaodong . Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/ mullite/Si environmental barrier coatings . | CERAMICS INTERNATIONAL , 2025 , 51 (1) , 279-289 .
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Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/mullite/Si environmental barrier coatings EI
期刊论文 | 2025 , 51 (1) , 279-289 | Ceramics International
Water vapor corrosion behaviours of nanostructured Yb2O3-Yb2SiO5/mullite/Si environmental barrier coatings Scopus
期刊论文 | 2024 , 51 (1) , 279-289 | Ceramics International
Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes SCIE
期刊论文 | 2025 , 105 | JOURNAL OF ENERGY STORAGE
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Abstract :

The rapid progress in the development and implementation of smart electronics and flexible devices has stimulated the need to produce energy storage units of high efficiency at low cost. In this work, we use laser-induced graphene to construct in-plane micro-supercapacitors (mu -SCs) and delve into the effects of inter-finger spacing, finger width, deformation state, and temperature on the electrochemical performance of the mu -SCs with five different gel polymer electrolytes made from H2SO4, H3PO4, KOH, NaOH, and NaCl, respectively. The mu -SCs with the electrolyte from the PVA/H2SO4 gel polymer exhibit the best performance under bending and torsion. Increasing temperature causes a slight increase of the specific areal capacitance. Increasing the inter-finger spacing reduces the specific areal capacitance, and the finger width has a limited effect on the specific areal capacitance. The capacitance retention of the mu -SCs with the electrolyte from the PVA/H2SO4 gel polymer is 94.24 % of the initial capacitance after 10,000 electrochemical cycles at a scan rate of 0.1 V/s. The specific areal capacitance of integrated mu -SCs constructed from individual mu -SCs with the PVA/H2SO4 gel polymer is inversely proportional to the number of mu -SCs for the series connection and proportional to the number of mu -SCs for the parallel connection. This study provides a feasible method to produce flexible mu -SCs of high efficiency at low cost.

Keyword :

Gel polymer electrolytes Gel polymer electrolytes In-plane micro-supercapacitor In-plane micro-supercapacitor Interdigital structure Interdigital structure Laser-induced graphene Laser-induced graphene

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GB/T 7714 Xu, Zhitong , Liu, Ming , Zhang, Yulin et al. Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes [J]. | JOURNAL OF ENERGY STORAGE , 2025 , 105 .
MLA Xu, Zhitong et al. "Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes" . | JOURNAL OF ENERGY STORAGE 105 (2025) .
APA Xu, Zhitong , Liu, Ming , Zhang, Yulin , Yang, Fuqian . Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes . | JOURNAL OF ENERGY STORAGE , 2025 , 105 .
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Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes Scopus
期刊论文 | 2025 , 105 | Journal of Energy Storage
Flexible micro-supercapacitors from laser-induced graphene and gel polymer electrolytes EI
期刊论文 | 2025 , 105 | Journal of Energy Storage
Characterization of elastic modulus and hardness of brittle solids by instrumented indentation SCIE
期刊论文 | 2025 , 41 (1) | ACTA MECHANICA SINICA
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Abstract :

The reduced elastic modulus Er and indentation hardness HIT of various brittle solids including ceramics, semiconductors, glasses, single crystals, and laser material were evaluated using nanoindentation. Various analysis procedures were compared such as Oliver & Pharr and nominal hardness-based methods, which require area function of the indenter, and other methods based on energy, displacement, contact depth, and contact stiffness, which do not require calibration of the indenter. Elastic recovery of the imprint by the Knoop indenter was also utilized to evaluate elastic moduli of brittle solids. Expressions relating H-IT/E-r and dimensionless nanoindentation variables (e.g., the ratio of elastic work over total work and the ratio of permanent displacement over maximum displacement) are found to be nonlinear rather than linear for brittle solids. The plastic hardness H-p of brittle solids (except traditional glasses) extracted based on E-r is found to be proportional to Er root H-IT.

Keyword :

Brittle solids Brittle solids Elastic modulus Elastic modulus Elastic recovery of Knoop imprint Elastic recovery of Knoop imprint Hardness Hardness Nanoindentation Nanoindentation

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GB/T 7714 Xu, Zhitong , Liu, Ming , Gong, Jianghong . Characterization of elastic modulus and hardness of brittle solids by instrumented indentation [J]. | ACTA MECHANICA SINICA , 2025 , 41 (1) .
MLA Xu, Zhitong et al. "Characterization of elastic modulus and hardness of brittle solids by instrumented indentation" . | ACTA MECHANICA SINICA 41 . 1 (2025) .
APA Xu, Zhitong , Liu, Ming , Gong, Jianghong . Characterization of elastic modulus and hardness of brittle solids by instrumented indentation . | ACTA MECHANICA SINICA , 2025 , 41 (1) .
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Characterization of elastic modulus and hardness of brittle solids by instrumented indentation EI
期刊论文 | 2025 , 41 (1) | Lixue Xuebao
Characterization of elastic modulus and hardness of brittle solids by instrumented indentation Scopus
期刊论文 | 2025 , 41 (1) | Lixue Xuebao
Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods SCIE
期刊论文 | 2024 , 50 (11) , 19982-20010 | CERAMICS INTERNATIONAL
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Abstract :

Micromechanical characterization of brittle ceramics remains challenging due to the difficulty in sample preparation required by conventional tests. The micromechanical properties (e.g., elastic modulus E IT , indentation hardness H IT , and fracture toughness K IC ) of ZrO2 2 and Si3N4 3 N 4 were investigated by indentation and scratch tests with different indenters (e.g., Vickers, Knoop, and Berkovich indenters) under various loads. The ratio of the true hardness by the Vickers indenter over that by the Knoop indenter is approximately a constant of 1.13 and independent of material. Elastic recovery of residual imprint by the Knoop indenter was also used to assess elastic modulus of ZrO2 2 and Si3N4, 3 N 4 , and modified equations were proposed. The length of Vickers indenter-induced cracking was found to be proportional to the applied load under large loads, and a modified formula for calculating fracture toughness was proposed for ZrO2 2 and Si3N4, 3 N 4 , which have relatively large fracture toughness of about 9 MPa & sdot;m1/2. & sdot; m 1/2 . The critical void volume fraction f * in the nanoindentation energy-based methods was found to linearly decrease with the exponent m f of the power-law equation used for curve fitting of the degradation of H IT or E IT with h max . The determination of fracture toughness by scratch methodology was found to be affected by mechanical properties of material, indenter geometry, and data range.

Keyword :

Brittle ceramics Brittle ceramics Fracture toughness Fracture toughness Instrumented indentation Instrumented indentation Micromechanical properties Micromechanical properties Scratch testing Scratch testing

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GB/T 7714 Liu, Ming , Chen, Shuai . Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods [J]. | CERAMICS INTERNATIONAL , 2024 , 50 (11) : 19982-20010 .
MLA Liu, Ming et al. "Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods" . | CERAMICS INTERNATIONAL 50 . 11 (2024) : 19982-20010 .
APA Liu, Ming , Chen, Shuai . Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods . | CERAMICS INTERNATIONAL , 2024 , 50 (11) , 19982-20010 .
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Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods EI
期刊论文 | 2024 , 50 (11) , 19982-20010 | Ceramics International
Micromechanical characterization of zirconia and silicon nitride ceramics using indentation and scratch methods Scopus
期刊论文 | 2024 , 50 (11) , 19982-20010 | Ceramics International
Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere SCIE
期刊论文 | 2024 , 50 (21) , 42709-42720 | CERAMICS INTERNATIONAL
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Abstract :

Vat photopolymerized 3D printing technology can be used to fabricate ceramics with complex shapes. However, the extensive use of photosensitive resins as binders is not conducive to achieving crack-free ceramic green parts, especially the Si3N4 ceramics with the weak interlayer bonding. In this work, the influence of different debinding atmosphere on the pyrolysis process of organics in vat photopolymerization 3D printed Si(3)N(4 )green parts was investigated. The results showed that the use of 95 vol% N-2+5 vol% H-2 atmosphere can effectively inhibit the cracking during the debinding process, especially the wall thickness of the 3D printed defect-free Si3N4 green body was successfully increased to 5 mm, and the obtained sintered Si3N4 ceramics exhibited higher true densities and better mechanical properties. The debinding atmospheres proposed in the current work provided additional options of debinding atmosphere for achieving high-performance 3D printed Si3N4 ceramics and are expected to be expanded to other photosensitive slurry systems, with the potential to enable the production of ceramic components with the larger wall thicknesses.

Keyword :

Debinding atmosphere Debinding atmosphere Mechanical properties Mechanical properties Si3N4 ceramics Si3N4 ceramics Sintering temperature Sintering temperature Vat photopolymerization 3D printing Vat photopolymerization 3D printing

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GB/T 7714 Shen, Minhao , Fu, Renli , Zhang, Yi et al. Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere [J]. | CERAMICS INTERNATIONAL , 2024 , 50 (21) : 42709-42720 .
MLA Shen, Minhao et al. "Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere" . | CERAMICS INTERNATIONAL 50 . 21 (2024) : 42709-42720 .
APA Shen, Minhao , Fu, Renli , Zhang, Yi , Sun, Kuang , Xu, Wei , Jiang, Yanlin et al. Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere . | CERAMICS INTERNATIONAL , 2024 , 50 (21) , 42709-42720 .
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Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere Scopus
期刊论文 | 2024 , 50 (21) , 42709-42720 | Ceramics International
Defect-free Si3N4 ceramics by vat photopolymerization 3D printing with nitrogen-hydrogen debinding atmosphere EI
期刊论文 | 2024 , 50 (21) , 42709-42720 | Ceramics International
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