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 1-2 mu m can be obtained at 1 773 K for 12 h when m(C)/m(ZrSiO4) is 0.4.
其他摘要
ZrN-Si_3N_4 composite powder with low cost from zircon was prepared by carbothermal reduction-nitridation process. The influence of mass ratio of C to ZrSiO_4 (m(C)/m(ZrSiO_4)) 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-Si_3N_4 composite powder was also analyzed in detail. The results show that with the increase of m(C)/m(ZrSiO_4) and soaking time, the formation of Si_3N_4 and ZrN can be promoted obviously. The ZrN-Si_3N_4 composite powder with size of 1-2 μm can be obtained at 1 773 K for 12 h when m(C)/m(ZrSiO_4) is 0.4.
Ma Beiyue,Yu Jingkun. Preparation of ZrN-Si3N4 composite powder with zircon and carbon black as raw materials[J]. TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,2009,19(5):1222-1226.
APA
Ma Beiyue,&Yu Jingkun.(2009).Preparation of ZrN-Si3N4 composite powder with zircon and carbon black as raw materials.TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA,19(5),1222-1226.
MLA
Ma Beiyue,et al."Preparation of ZrN-Si3N4 composite powder with zircon and carbon black as raw materials".TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA 19.5(2009):1222-1226.
修改评论