ZrB_(2)-ZrC-SiC复合陶瓷的力学性能及抗氧化性能研究

Mechanical properties and oxidation resistance of ZrB_(2)-ZrC-SiC composite ceramics

分别使用自制的不同成分的ZrB_(2)-ZrC-SiC复合粉末,以及购买的商业ZrB_(2)、ZrC、SiC粉末为原料,通过放电等离子烧结的方法烧结制备了ZrB_(2)-ZrC-SiC复合陶瓷块体。研究发现使用自制的粉末烧结而成的ZrB_(2)-ZrC-SiC复合陶瓷拥有更高的硬度,更好的力学性能。同时使用自制粉末制备的复合陶瓷也具有更好的抗氧化性能。在以不同成分的自制ZrB_(2)-ZrC-SiC复合粉末烧结制备的复合陶瓷中ZrB2含量高的样品具有更好的抗氧化性能。

ZrB_(2)-ZrC-SiC composite ceramic blocks were prepared by spark plasma sintering using self-made ZrB_(2)-ZrC-SiC composite powders with different compositions and purchased commercial ZrB_(2), ZrC, and SiC powders as raw materials. The study found that the ZrB_(2)-ZrC-SiC composite ceramics sintered from the self-made powder had higher hardness and better mechanical properties. At the same time, the composite ceramics prepared with self-made powder also have better anti-oxidation properties. The samples with high ZrB_(2) content in the composite ceramics prepared by sintering the self-made ZrB_(2)-ZrC-SiC composite powders with different compositions have better oxidation resistance.