Bulletin of materials science | |
Production of boron carbide powder by carbothermal synthesis of gel material | |
A K Khanra1  | |
[1] Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, IndiaDepartment of Metallurgical and Materials Engineering, Indian Institute of Technology, Kharagpur 721 302, India$$ | |
关键词: B4C; carbothermal synthesis; gel material.; | |
DOI : | |
学科分类:材料工程 | |
来源: Indian Academy of Sciences | |
【 摘 要 】
Boron carbide (B4C) powder has been produced by carbothermal reduction of boric acid�?�citric acid gel. Initially a gel of boric acid�?�citric acid is prepared in an oven at 100°C. This gel is pyrolyzed in a high temperature furnace over a temperature range of 1000�??1800°C. The reaction initiation temperature range for B4C formation is determined by thermal analysis. The optimal pyrolysis temperature of B4C synthesis is investigated. During pyrolysis, the evaporation of boron-rich phases results in presence of free carbon in B4C powder. The electron micrographs and particle size analyser reveal the generation of fine B4C particles.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912010228826ZK.pdf | 810KB | download |