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二氧化硅碳還原法制取Si3N4粉的研究
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TQ174.1

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The Investigation of Preparing Si_3N_4 Powder by Carbon Reduction From SiO_2
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    摘要:

    報導(dǎo)了用二氧化硅碳還原氮化法制取高性能Ｓｉ３Ｎ４粉的研究結(jié)果。研究了氮化溫度、氮化時間、氮氣流量等工藝因素對氮化產(chǎn)物的顏色、顆粒形狀、粒度和粒度分布以及相結(jié)構(gòu)的影響；分析了非晶態(tài)、ＳｉＯ２、ＳｉＣ產(chǎn)物的形成條件。結(jié)果表明：氮化工藝因素對氨化產(chǎn)物的性能有明顯的影響，采用１４５０℃氮化溫度，氮化時間２ｈ，Ｎ２流量２．５Ｌ／ｍｉｎ的工藝條件，能制得高α相比例，顆粒微細(xì)和粒度分布均勻的優(yōu)質(zhì)Ｓｉ３Ｎ４粉。

    Abstract:

    he investigating results of preparing high Performance Si3N4 powder by carbon reduction and nitridation from SiO2 is reported in this paper.lt has been studied that the effeCt of the technological factors such as the nitriding temperature,the nitriding time and nitrogen flow,etC.on the colour,particle shape,Pareicle size, particle distribution and phase structure of the nitriding products. The forming conditions of the amorphism,SiO2 and SiC products are discussed.Results show that the nitriding technological factors influence obviously the performances of the nitriding products.High quality St3N. POwder with high a phase ratio,fine particle and homogeneous particle distribution can be prepared by the technological conditions of using the nitriding temperature 1450t,the nitriding time 2h and the nitrogen flow 2.5L/ min.

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李應(yīng)泉 廖際常.二氧化硅碳還原法制取Si3N4粉的研究[J].稀有金屬材料與工程,1994,(1):40~49.[Li Yingquan, Liao Jichang, Deng Chaoquan, Wang Zhi, Xuan Linjie, Zhang Renqi. The Investigation of Preparing Si_3N_4 Powder by Carbon Reduction From SiO_2[J]. Rare Metal Materials and Engineering,1994,(1):40~49.]
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