材料与冶金学报2018，Vol.17Issue(1)：46-49,55,5.DOI:10.14186/j.cnki.1671-6620.2018.01.009
原位包覆制备氮化硅复合粉体的研究
In-situ synthesis of Si3N4powders with enhanced mechanical properties
摘要
Abstract
A simple precipitation method has been developed for the preparation of yttrium aluminum precursor coated Si3N4powders without resorting to uncontrollable pH value, and further avoid the inhomogeneous phenomenon of sintering additives via mechanical ball-milling method. The experimental results indicated that the microstructure of the precursor exhibited a core - shell structure using scanning electron microscopy (SEM). After sintering, the composition reveals excellent sintering and mechanical properties.And then flexural strengthen of the Si3N4powders coated by urea co-precipitation method was improved to 817 MPa at 1 750℃.关键词
氮化硅/尿素/包覆/力学性能Key words
Si3N4/urea/coating/mechanical properties分类
化学化工引用本文复制引用
叶超超,姜岩,冯东,岳新艳,贾洪声,茅智亮,茹红强,张翠萍..原位包覆制备氮化硅复合粉体的研究[J].材料与冶金学报,2018,17(1):46-49,55,5.基金项目
国家重点专项研究项目(2017YFB0310300)和国家自然科学基金(51272039,51602041)资助项目 （2017YFB0310300）
