Effect of SiC content on mechanical properties of ZrB2-SiC Nanocomposite
首发时间:2010-05-26
Abstract:A ZrB2-SiC nanocomposite that introduced nano-sized SiC particle (SiCnp) into a ZrB2 matrix was fabricated by hot-pressing at 1900 C for 60min under a 30MPa uniaxed load. The composite microstructure showed intragranular microstructure that were peculiar to this material. Investigation of the mechanical properties revealed the highest flexural strength of 1009.1±43MPa and a fracture toughness of 6.8±0.2MPaom1/2 for ZrB2-20vol.%SiC nanocomposite. These improved mechanical properties were strongly dependent on the number of intragranular particle.
keywords: intragranular particle mechanical properties microstructure nanocomposite
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SiC含量对ZrB2-SiC 纳米复相陶瓷力学性能的影响
摘要:A ZrB2-SiC nanocomposite that introduced nano-sized SiC particle (SiCnp) into a ZrB2 matrix was fabricated by hot-pressing at 1900 C for 60min under a 30MPa uniaxed load. The composite microstructure showed intragranular microstructure that were peculiar to this material. Investigation of the mechanical properties revealed the highest flexural strength of 1009.1±43MPa and a fracture toughness of 6.8±0.2MPaom1/2 for ZrB2-20vol.%SiC nanocomposite. These improved mechanical properties were strongly dependent on the number of intragranular particle.
关键词: intragranular particle;mechanical properties;microstructure;nanocomposite
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