Microwave assisted synthesis of WC nanopowder from nanosized multicomponent system W-C produced in thermal plasma reactor

IF 4.6 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Refractory Metals & Hard Materials Pub Date : 2021-11-01 DOI:10.1016/j.ijrmhm.2021.105618

A.V. Samokhin , N.V. Alekseev , M.A. Sinayskiy , A.G. Astashov , A.V. Vodopyanov , A.A. Sorokin , S.V. Sintsov

{"title":"Microwave assisted synthesis of WC nanopowder from nanosized multicomponent system W-C produced in thermal plasma reactor","authors":"A.V. Samokhin , N.V. Alekseev , M.A. Sinayskiy , A.G. Astashov , A.V. Vodopyanov , A.A. Sorokin , S.V. Sintsov","doi":"10.1016/j.ijrmhm.2021.105618","DOIUrl":null,"url":null,"abstract":"<div><p><span>The effect of processing multicomponent nanopowders of the W-C system obtained by plasma-chemical synthesis in a microwave electromagnetic field with a frequency of 24 GHz, generated by continuous gyrotron, has been experimentally studied. It was found that the formation of nanosized particles of </span>tungsten<span> carbide WC occurs during microwave treatment. The influence of the processing time, microwave power and the composition of the gas atmosphere on the phase composition of nanopowders, their morphology and specific surface area was investigated.</span></p><p>It has been found that processing in a microwave field can reduce the time of chemical transformations, leading to the formation of tungsten monocarbide, by an order of magnitude compared to traditional heating in an electric furnace in a hydrogen environment. At the same time, the particle size is preserved in the nanometer range.</p></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"100 ","pages":"Article 105618"},"PeriodicalIF":4.6000,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.ijrmhm.2021.105618","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Refractory Metals & Hard Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263436821001505","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 3

Abstract

The effect of processing multicomponent nanopowders of the W-C system obtained by plasma-chemical synthesis in a microwave electromagnetic field with a frequency of 24 GHz, generated by continuous gyrotron, has been experimentally studied. It was found that the formation of nanosized particles of tungsten carbide WC occurs during microwave treatment. The influence of the processing time, microwave power and the composition of the gas atmosphere on the phase composition of nanopowders, their morphology and specific surface area was investigated.

It has been found that processing in a microwave field can reduce the time of chemical transformations, leading to the formation of tungsten monocarbide, by an order of magnitude compared to traditional heating in an electric furnace in a hydrogen environment. At the same time, the particle size is preserved in the nanometer range.

查看原文本刊更多论文

热等离子体反应器制备纳米多组分体系W-C，微波辅助合成纳米WC粉体

实验研究了在连续回旋管产生的频率为24GHz的微波电磁场中处理等离子体化学合成的W-C系多组分纳米粉体的效果。研究发现，在微波处理过程中会形成碳化钨WC的纳米颗粒。研究了处理时间、微波功率和气氛组成对纳米粉体相组成、形貌和比表面积的影响。已经发现，与在氢气环境中在电炉中进行传统加热相比，在微波场中进行处理可以将导致形成一碳化钨的化学转化时间减少一个数量级。同时，颗粒尺寸保持在纳米范围内。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

$International Journal of Refractory Metals & Hard Materials$

International Journal of Refractory Metals & Hard Materials 工程技术-材料科学：综合

CiteScore

7.00

自引率

13.90%

发文量

236

审稿时长

35 days

期刊介绍： The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.