硬质金属污泥循环利用产物制备碳化钨及其性能研究

Hanjung Kwon, J. Shin
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引用次数: 1

摘要

采用不使用仲钨酸铵的新型硬质金属污泥回收工艺制备碳化钨粉末。用酸代替氨除去钠,使钨酸盐结晶,生成钨酸(h2wo4)。在WC- co复合材料烧结过程中,通过碳热还原钨成功地合成了WC粉末;因此,以h2wo4制备的WC粉为原料,制备了具有大WC颗粒的WC- co复合材料。大WC晶粒影响WC- co复合材料的力学性能。此外,由于晶粒尺寸大,由h2wo4制备的WC- co复合材料的韧性高于由普通WC粉制备的WC- co复合材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation and Characterization of Tungsten Carbide Using Products of Hard Metal Sludge Recycling Process
In this study, tungsten carbide (WC) powder was prepared using a novel recycling process for hard metal sludge that does not use ammonium paratungstate. Instead of ammonia, acid was used to remove the sodium and crystallized tungstate, resulting in the formation of tungstic acid (H 2 WO 4 ). The WC powder was successfully synthesized by the carbothermal reduction of tungstic during the sintering of the WC-Co composite; thus, a WC-Co composite with large WC grains was fabricated using the WC powder prepared from H 2 WO 4 . The large WC grains affected the mechanical properties of the WC-Co composite. Further, due to the large grain size, the WC-Co composite fabricated from H 2 WO 4 exhibited a higher toughness than that of the WC-Co composite prepared from commercial WC powder.
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