Influence of processing parameters on the phase composition of ZrN-Si_3N_4 synthesized from zircon

查看全文 作　　者：MA Beiyue YU [1]Jingkun

机构地区：[1]School of Materials and Metallurgy, Northeastern University Shenyang 110004, China

出　　处：《Rare Metals》索引2009年第28卷第4期,共5页

基　　金：supported by the National Natural Science Foundation of China (No. 50274021) 摘　　要：The optimum parameters were determined for synthesizing ZrN-Si3N4 composite powder from zircon by carbothermal reduction-nitridation (CTRN) process. The samples were prepared by mixing the carbon black of an average particle size less than 30 μm and the zircon of 40 μm with C/ZrSiO4 mass ratios of 0.2, 0.3, 0.4, and 0.5. The prepared samples were subjected to the CTRN process at temperatures of 1673, 1723, 1753, and 1773 K for 6, 9, and 12 h. The CTRN process was conducted in an atmosphere-controlled tubular furnace in a nitrogen gas flow of 1.0 L/min. All the products were examined by X-ray powder diffraction to determine the transformation. The results showed that the proper transformation of ZrN-Si3N4 occurred at 1773 K for 12 h with a C/ZrSiO4 mass ratio of 0.4. 关键词：氮化锆氮化硅工艺参数锆石合成相组成碳热还原氮化 SI3N4

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Influence of processing parameters on the phase composition of ZrN-Si_3N_4 synthesized from zircon

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耦合文献(47)

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