Effects of Coated Nano-BN Particles on Microstructure and Properties of BN-AlN Composite

Mei Juan Li; Qiang Shen; Fei Chen; Lian Meng Zhang; L.F. Yao

doi:10.4028/www.scientific.net/AMR.66.89

Paper Titles

Carbothermal Reduction and Nitridation Synthesis of γ-AlON Powder under High Heating Rate
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Synthesis of Ultra-Fine ZrB₂ Powder by Borothermal Reaction under High Heating Rate
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Microstructure and Properties of Mulite-FeCr Multifunctional Composite
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Effect of Sintering Temperature on the Properties of Porous Silicon Nitride Ceramics
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Effects of Coated Nano-BN Particles on Microstructure and Properties of BN-AlN Composite
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Erosion Resistance of Al₂TiO₅/Al₂O₃ Composites to Molten Aluminum
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Fabrication of Indium Tin Oxide Targets by Spark Plasma Sintering and Hot-Pressing Sintering
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Superfast Sintering of Nanocrystalline Y₂O₃ Ceramics
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Low-Temperature Sintering and Microwave Dielectric Properties of the Zn₂SiO₄ Ceramics
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 66Effects of Coated Nano-BN Particles on...

Effects of Coated Nano-BN Particles on Microstructure and Properties of BN-AlN Composite

Abstract:

Surface coating has been used to prepare nano-particle BN-AlN composite powder. Nano-BN was synthesized via in-situ reaction, coating on the surface of AlN particles. The effects of coated nano-BN on the microstructure and properties of BN-AlN composites have been investigated. Results indicate that the microstructure and properties of BN-AlN composites are very different from the origin composite powders. Nano-BN particles cause the homogeneous microstructure and reinforce the grain boundary of BN-AlN composites. They exhibit similar regularity of reinforce effect of ceramic nano-particle and enhances remarkably the composites’ mechanical strength. But nano-BN will introduce more grain interfaces, more oxygen-related defects in grain lattice to increase phonon scattering and reduce the thermal conductivity of BN-AlN composites.