Preparation of submicron boron carbide at a high heating rate

7th Global Conference on Materials Science and Engineering

工业技术（总论）;材料科学

Zhao, J.^1 ; Zhou, W.H.^1 ; Hu, S.L.^1

Department of Special Materials Engineering, China Institute of Atomic Energy, Beijing

102413, China^1

关键词: Gel technology;    Heating/cooling rate;    High heating rates;    High temperature;    Low temperature synthesis;    Reaction temperature;    Submicron-sized;    Trimethyl borates;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/474/1/012052/pdf
DOI  :  10.1088/1757-899X/474/1/012052

来源: IOP

【 摘 要 】

Organosol gel technology is a research hotspot of low-temperature synthesis of ultrafine boron carbide powders at this stage. Based on this technology, trimethyl borate is directly used as a pyrolysis material, which eliminates the process of forming a gel and simplifies the operating procedures. During the experiment, the reaction temperature and heating/cooling rates played a significant role in developing uniform submicron boron carbide powders. In this paper, uniform submicron-sized boron carbide was prepared at a high temperature of 1600°C and a rapid heating rate of 400°C/min. The ratio of the particle size distribution to 1 μm or less was 91%.