摘要
ZrN-Si3N4 composite powder with low cost from zircon was prepared by carbothermal reduction-nitridation process.The influence of mass ratio of C to ZrSiO4(m(C)/m(ZrSiO4))and soaking time on phase composition and microstructure of the products was studied by means of XRD and SEM-EDS.The formation process of ZrN-Si3N4 composite powder was also analyzed in detail. The results show that with the increase of m(C)/m(ZrSiO4)and soaking time,the formation of Si3N4 and ZrN can be promoted obviously.The ZrN-Si3N4 composite powder with size of 1-2μm can be obtained at 1 773 K for 12 h when m(C)/m(ZrSiO4)is 0.4.
ZrN-Si3N4 composite powder with low cost from zircon was prepared by carbothermal reduction-nitridation process. The influence of mass ratio of C to ZrSiO4 （m（C）/m（ZrSiO4）） and soaking time on phase composition and microstructure of the products was studied by means of XRD and SEM-EDS. The formation process of ZrN-Si3Na composite powder was also analyzed in detail. The results show that with the increase of m（C）/m（ZrSiO4） and soaking time, the formation of Si3N4 and ZrN can be promoted obviously. The ZrN-Si3N4 composite powder with size of 1-2 ）am can be obtained at I 773 K for 12 h when m（C）/m（ZrSiO4） is 0.4.
出处
《中国有色金属学会会刊：英文版》
EI
CSCD
2009年第5期1222-1226,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(50274021)supported by the National Natural Science Foundation of China and Baoshan Iron and Steel Co.,Ltd.
