硅酸盐学报2009，Vol.37Issue(5)：871-876,6.
Si3N4/Fe,Si3N4/Fe3Al界面的固相反应
INTERFACIAL SOLID STATE REACTIONS OF Si3N4/Fe AND Si3N4/Fe3Al COUPLES
摘要
Abstract
After Si3N4/Fe, Si3N4/Fe3Al couples had been heat treated at 1150 ℃ for 10h in Ar atmosphere, the morphologies, phases, microstructures and elemental distributions in the reaction zones of the couples were studied using a scanning electron microscope with an energy disperse spectroscopy analyzer and X-ray diffraction. The results show that there is a reaction zone about 120 μm thick on the Si3N4/Fe interface by solid state reaction. The reaction zone is composed of Fe(Si) solid solution, in which many small pores are distributed uniformly. The Fe content in the reaction zone gradually increases from the Si3N4 surface to the Fe surface, and the Si content of the reaction zone is 5% in mole. The thickness of the interfacial reaction zone formed by the Si3N4/Fe3Al solid state reaction is about 3 μm. The reaction zone is composed of FeAl, Fe(Al, Si) solid solution and AlgFeSi3, and in which the Al content is higher than in Fe3Al. The chemical compatibility of the Si3N4/Fe3Al system sample is much higher than that of the Si3N4/Fe system.关键词
氮化硅/铁二铝/界面同相反应/显微结构/相组成Key words
silicon nitride/tri-iron aluminide/interracial solid state reaction/microstructure/phase composition分类
通用工业技术引用本文复制引用
高建杰,汤文明,吴玉程,郑治祥..Si3N4/Fe,Si3N4/Fe3Al界面的固相反应[J].硅酸盐学报,2009,37(5):871-876,6.基金项目
安徽省自然科学基金(050440704)资助项目. （050440704）
