Low-cost preparation of boron nitride ceramic powders

被引：0
|
作者：
Duan Li
Changrui Zhang
Bin Li
Feng Cao
Siqing Wang
Kun Liu
Zhenyu Fang
机构：
[1] National University of Defense Technology,State Key Laboratory of Advanced Ceramic Fibers & Composites, College of Aerospace & Materials Engineering
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2012年 / 27卷
关键词：
low-cost; urea route; boron nitride; ceramic; molar ratios of the raw materials; preparation temperatures; oxidation treatment;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The amorphous boron nitride ceramic powders were prepared at 750–950 °C by the low-cost urea route, and the effects of preparation temperatures, molar ratios of the raw materials and oxidation treatment on the composition, structure and surface morphology of the products were investigated through FTIR, XRD and SEM. The results show that the products ceramize and crystallize gradually with the increase of the temperature. When the molar ratio and reaction temperature are 3:2 and 850 °C, respectively, the products have high purity, compact structure and nice shape. The oxidation treatment at 450 °C will not impair the composition and structure of boron nitride but effectively remove the impurities.
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页码：534 / 537
页数：3
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