氧化钇对赛隆结合碳化硅制品性能的影响  

Influence of Y_2O_3 Addition on Properties of Sialon Bonded SiC Material

作　　者：乐红志[1] 文洪杰[2] 彭达岩[2] 

机构地区：[1]山东理工大学材料科学与工程学院,淄博255049 [2]钢铁研究总院,北京100081

出　　处：《硅酸盐通报》2005年第6期24-27,共4页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金重点资助项目(50332010).

摘　　要：采用反应烧结法制备Sialon结合SiC材料,在配料中加入少量Y2O3,研究其对材料显微结构、力学性能、抗氧化性和抗热震性的影响。发现添加Y2O3可明显改善Sialon结合SiC的抗氧化和热震能力,提高材料常温抗折、抗压强度,但对1400℃下高温抗折强度有负面影响。又在1200℃下测其抗折强度,发现强度可达50MPa以上。因而,在中低温条件下,添加Y2O3既可使材料具备优良的力学性能,又可提高其热学性能。SiMon bonded SiC materials were prepared by reactive sintering. The results show that the addition of Y2O3 can improve the materials＇ microstructure, oxidation resistance and heat shock resistance,also improve its bending strength and compressive strenghth at room temperature, but decreases its bending strength at 1400℃. While,at 1200℃ the bending strength can reach over 50MPa. So the addition of Y2O3 can make SiMon bonded SiC material have excellent machanical and thermotics properties below 1200℃.

关 键 词：赛隆 碳化硅 氧化钇 

分 类 号：TQ325.307[化学工程—合成树脂塑料工业] TQ174.758