Sialon相的Z值对Sialon/刚玉复合材料组织和性能的影响  

Effect of Z Value in Sialon Phase on Microstructure and Properties of Synthesized Sialon-Corundum Refractory Materials

作　　者：巩甘雷[1] 茹红强[1] 孙旭东[1] 薛向欣[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2004年第12期1161-1164,共4页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2002AA33408);河北省科学研究计划项目(98212210D)

摘　　要：研究了一步工艺合成Sialon/刚玉复合材料中Sialon相Z值的控制,以及SialonZ值对Sialon/刚玉复合材料的机械强度、抗热震性、抗化学侵蚀性、抗氧化性和显微组织的影响规律·结果表明:Sialon/刚玉复合材料随着材料中Sialon相Z值的升高,材料的强度降低,热震稳定性下降,抗氧化性提高,抗化学侵蚀性得到显著改善,Sialon柱状晶体尺寸增大;Sialon相Z值选择在3时该材料能够获得优良的抗氧化性和抗侵蚀性并均衡得到适宜的强度和热震稳定性·Sialon-corundum refractory materials were synthesized directly using silicon powder, aluminum powder and black corundum of to investigate the control of Z value in sialon phase and its effect on the microstructure, flexural strength and resistances to thermal shock, oxidation and chemical corrosion. The results showed that, with the increasing Z value in sialon phase the abilities of anti-oxidation and anti-corrosion of synthesized materials increase and the columner crystal size of Sialon grows up, while the flexural strength and the resistance to thermal shock decrease. On condition that Z=3, it is possible to obtain such a material that the resistances to both oxidation and corrosion are high in combination with moderate flexural strength and stable thermal shock.

关 键 词：Sialon/刚玉复合材料 机械强度 抗氧化性 显微组织 

分 类 号：TQ174.758[化学工程—陶瓷工业]