Fabrication of high purity and nano-sized tungsten carbide particles using chemical complex solution

被引：0

作者：

Yamashita Y. ^{[1
]}

Harada T. ^{[1
]}

Makino T. ^{[1
]}

Fujiyoshi K. ^{[1
]}

Ueno S. ^{[2
]}

Koga M. ^{[2
]}

机构：

[1] Fukuoka Industrial Technology Center, Chikushino 818-8540

[2] Nippon Tungsten Co., LTD., Miyaki-Gun, Saga 840-0203, 3173-2 Sonobe, Kiyama-Cho

来源：

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 2010年 / 57卷 / 05期

关键词：

Chemical complex solution method; Nano-sized WC particles; Tungstic acid;

D O I：

10.2497/jjspm.57.348

中图分类号：

学科分类号：

摘要：

High purity and nano-sized tungsten carbide (WC) particles have been successfully prepared using chemical complex solution which is composed of tungstic acid, citric acid and ammonia solution. The precursor, which was obtained by drying the chemical complex solution, was heated to 1423 K under Ar atmosphere. Total carbon (C) amount of the heat-treated precursor was controlled by molar ratio of citric acid and tungstic acid. In case of this experimental system, W-C bonds have been already formed at 723 K. The carbonization temperature was lower than that of the conventional methods that used C and WO3 or W, therefore particle growth has been suppressed. The sizes of the obtained WC particles were under 100 nm and the amounts of iron and cobalt as impurities were under 10ppm.

引用

页码：348 / 351

页数：3

共 5 条

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