Effects of BN content on the structural and mechanical properties of a-SiBN ceramics
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Ningbo Liao
, Wei Xue , Hongming Zhou und Miao Zhang
Abstract
SiBN has the advantages of Si3N4 at high temperature and also presents good mechanical properties. Understanding the structural and mechanical properties of SiBN is essential in order to control the properties under fabrication. In this paper, the effects of BN content on structural and mechanical properties of SiBN ceramics were investigated using atomistic simulation. Phase separation of the SiN-rich region and the BN-rich region was observed for all the three compositions. With BN content increases, the BN-rich regions tend to be larger and the SiN-rich regions become smaller. Interestingly, Si3B3N7 shows different structural and mechanical properties compared with Si3BN5 and Si3B5N9: 1) sharper and narrower peaks for pair distribution functions and angular distribution. 2) larger values but less stability for Young's moduli at high temperatures. The larger Young's modulus of Si3B3N7 is attributed to the network structure of BN and SiN phase.
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© 2013, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Structure of composites consolidated from ball milled 7475 aluminum alloy and ZrO2 powders
- Isothermal section of the Al-Tb-V ternary system at 773 K
- Development of an atomic mobility database for disordered and ordered fcc phases in multicomponent Al alloys: focusing on binary systems
- Effect of additive and current density on microstructure and texture characteristics of copper electrodeposits
- Magnetic properties and microwave absorption properties of carbon fibers coated with FeCo alloy
- Effects of BN content on the structural and mechanical properties of a-SiBN ceramics
- Structural and relaxor characteristics of Ca0.18Sr0.226Ba0.594Nb2O6
- Study on the dielectric properties of CaCu3Ti4O12 ceramics using the one-dimensional Ising model
- Erosion wear performance of a surface diffusion alloyed coating on pure magnesium
- Evaluation of the quality of cladding deposited on continuous steel casting rolls
- Investigating the machinability of austempered ductile irons with dual matrix structures
- Simple preperation of CuO nanoparticles and submicron spheres via ultrasonic spray pyrolysis (USP)
- Fabrication of transparent Nd:YAG ceramic by vacuum sintering with CaF2 additive
- Synthesis and characterization of new Bi2FeNiO6 material using a citric acid assisted gel combustion technique
- Processing and characterization of up-converting Er3+ doped (Lu0.5Y0.5)2O3 nanophosphor
- People
- People
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Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- Structure of composites consolidated from ball milled 7475 aluminum alloy and ZrO2 powders
- Isothermal section of the Al-Tb-V ternary system at 773 K
- Development of an atomic mobility database for disordered and ordered fcc phases in multicomponent Al alloys: focusing on binary systems
- Effect of additive and current density on microstructure and texture characteristics of copper electrodeposits
- Magnetic properties and microwave absorption properties of carbon fibers coated with FeCo alloy
- Effects of BN content on the structural and mechanical properties of a-SiBN ceramics
- Structural and relaxor characteristics of Ca0.18Sr0.226Ba0.594Nb2O6
- Study on the dielectric properties of CaCu3Ti4O12 ceramics using the one-dimensional Ising model
- Erosion wear performance of a surface diffusion alloyed coating on pure magnesium
- Evaluation of the quality of cladding deposited on continuous steel casting rolls
- Investigating the machinability of austempered ductile irons with dual matrix structures
- Simple preperation of CuO nanoparticles and submicron spheres via ultrasonic spray pyrolysis (USP)
- Fabrication of transparent Nd:YAG ceramic by vacuum sintering with CaF2 additive
- Synthesis and characterization of new Bi2FeNiO6 material using a citric acid assisted gel combustion technique
- Processing and characterization of up-converting Er3+ doped (Lu0.5Y0.5)2O3 nanophosphor
- People
- People
- DGM News
- DGM News