The Effect of Temperature on the Purity of Nano-Scale Tantalum Powder Produced from Its Scrap by Reaction with Magnesium and Calcium

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-06-10 DOI:10.22068/IJMSE.2006

G. Borhani, S. Bakhshi, Sadegh Soltani

引用次数: 0

Abstract

In this study, Ta powder was produced from Ta scarp via chemical processes using Mg and Ca powders. Initially, tantalum scraps were converted to tantalum oxide (Ta2O5) at 1100 ̊C in an oxygen atmosphere. Tantalum oxide was then reduced to Tantalum powder with Mg in a vacuum environment at 950 to 1200 ̊C for 3 hours. The obtained Ta powders further were reacted with Ca at 950 ̊C for 5 hours in a vacuum atmosphere. The powders were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), as well as conducting oxygen content measurement. The results showed that the average particle size of the produced Ta powders was around 58 nm with oxygen contents of 250 ppm.

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温度对用钽废料与镁、钙反应制备纳米钽粉纯度的影响

在本研究中，用Mg和Ca粉末通过化学工艺从Ta废料中制备Ta粉末。最初，钽废料在氧气气氛中于1100°C转化为氧化钽（Ta2O5）。然后，在950至1200°C的真空环境中，将氧化钽与Mg一起还原为钽粉3小时。将获得的Ta粉末进一步与Ca在950℃下在真空气氛中反应5小时。使用X射线衍射（XRD）、扫描电子显微镜（SEM）以及进行氧含量测量对粉末进行分析。结果表明，所制备的Ta粉末的平均粒径约为58nm，氧含量为250ppm。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.