郑州大学学报（工学版）2012，Vol.33Issue(1)：46-50,5.DOI:10.3969./j.issn.1671-6833.2012.01.012
Al2O3-SiC-SiAlON复合材料的制备和性能
Preparation and Properties of Al2O3-SiC-SiAlON Composites
摘要
Abstract
The composite specimens were prepared using fused corundum, micro-powder A12O3, silicon powder and bauxite-based p-SiA10N as starting materials and resin as binder. The phase composition, microstruc-ture, physical properties, high temperature modulus of rupture (HMOR) and thermal shock resistance (TSR) of the specimens after firing at 1500 °C have been studied. The results show; (1) The Al203-SiC-SiA10N composite can be prepared by corundum and Si firing at high temperature in carbon embedded condition and fl-SiAlON addition can promote Si reaction. This composite is sintered well at 1500 °C. (2) HMOR and TSR increase with the increase of Si content, thermo-mechanical properties is further increased with appropriate |3-SiAlON addition. (3) The improved thermo-mechanical properties may be attributed to Si reacting with C, CO and N2 to form SiC whisker or fiber and flocculent-like O' -SiAlON which would fill in the interstices of corundum skeleton structure, forming interlocking network structure, thus creating strengthening and toughening effect.关键词
Al2O3-SiC-SiAlON复合材料/SiC/β-SiAlON/高温机械性能/显微结构Key words
Al203-SiC-SiA10N composite/SiC/p-SiA10N/thermo-mechanical property/microstructure分类
化学化工引用本文复制引用
刘新红,周超杰,张磊..Al2O3-SiC-SiAlON复合材料的制备和性能[J].郑州大学学报（工学版）,2012,33(1):46-50,5.基金项目
河南省重点科技攻关资助项目(112102210095) （112102210095）
河南省教育厅自然科学基金资助项目(2008A430017 （）
2011A430024). （）
