Preparation of ZrB2-SiC Composite Powder by Boro/Carbothermal Reduction Method
摘 要
以氧化锆、氧化硅、氧化硼及活性炭为原料,采用碳热/硼热还原法制备了ZrB2-SiC复合粉体,并对合成过程进行了热力学分析,研究了反应温度以及活性炭含量对复合粉体物相组成和显微结构的影响。结果表明:在1 400~1 450℃温度范围可以合成ZrB2-SiC复合粉体;提高反应温度有利于合成ZrB2-SiC复合粉体,经1 450℃保温3 h反应可以得到较纯的ZrB2-SiC复合粉体;活性炭过量50%和75%(物质的量分数)条件下制备的复合粉体的物相组成基本相同。
Abstract
ZrB2-SiC composite powders were synthesized by the boro/carbothermal reduction method using ZrO2, SiO2, B2O3 and activated carbon as raw materials. The thermodynamic analysis was conducted on the formation process. The effects of synthesis temperature and activated carbon content on the phase composition and micromorphology of ZrB2-SiC composite powders were investigated. The results show that ZrB2-SiC composite powder can be synthesized at temperatures of 1 400-1 450℃. Increasing the reaction temperature was beneficial to the synthesis of ZrB2-SiC composite powder and the relatively pure ZrB2-SiC composite powder was obtained by the reaction at 1 450℃ for 3 h. Meanwhile, the phase composition of the obtained ZrB2-SiC composite powders was basically similiar with the activated carbon of excessive mole fraction of 50% and 75%.
中图分类号 TB35 DOI 10.11973/jxgccl201702012
所属栏目 新材料 新工艺
基金项目 国家自然科学基金面上基金资助项目(51272188);湖北省自然科学青年基金资助项目(2014CFB800);湖北省自然科学基金资助项目(2013CFA086);湖北省科技支撑计划对外科技合作项目(2013BHE002)
收稿日期 2015/12/7
修改稿日期 2016/12/14
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备注李发亮(1983-),男,河南南阳人,讲师,博士。
引用该论文: LI Fa-liang,DU Shuang,ZHANG Hai-jun,ZHANG Shao-wei,LU Li-lin. Preparation of ZrB2-SiC Composite Powder by Boro/Carbothermal Reduction Method[J]. Materials for mechancial engineering, 2017, 41(2): 59~62
李发亮,杜爽,张海军,张少伟,鲁礼林. 碳热/硼热还原法制备ZrB2-SiC复合粉体[J]. 机械工程材料, 2017, 41(2): 59~62
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