Microwave-assisted Preparation of Precursor for the Synthesis of Nanocrystalline Boron Carbide Powder

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS Transactions of the Indian Ceramic Society Pub Date : 2020-10-01 DOI:10.1080/0371750x.2020.1832581

Soja K. Vijay, R. Prabhu, D. Annie, V. Chandramouli, S. Anthonysamy, Ashish Jain

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引用次数: 1

Abstract

ABSTRACT Nanocrystalline boron carbide was synthesized using a precursor. The precursor was prepared by the thermal decomposition of a condensed product formed by boric acid and mannitol. The condensed product was formed by microwave-assisted heating of the aqueous solution of boric acid and mannitol. The condensed product was thermally decomposed at various temperatures, viz. 400°, 500° and 600°C for 2 h. The thermally decomposed condensed product was further heat treated at temperatures from 1000° to 1600°C for 10-240 min to optimize the temperature and duration of heating in order to synthesize boron carbide with a lower free carbon impurity phase. All the products were characterized for phase purity and chemical composition (boron, total carbon and free carbon contents). The formation of boron carbide was found to occur even at a lower temperature of 1000°C. The free carbon content in the product at 1600°C was found to be <0.5 wt%. GRAPHICAL ABSTRACT

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微波辅助制备纳米晶碳化硼粉体前驱体

摘要用前驱体合成了纳米晶碳化硼。前体是通过硼酸和甘露醇形成的缩合产物的热分解制备的。通过微波辅助加热硼酸和甘露醇的水溶液形成冷凝产物。冷凝产物在不同温度下热分解，即400°、500°和600°C，持续2小时。热分解的冷凝产物在1000°至1600°C的温度下进一步热处理10-240分钟，以优化加热温度和持续时间，从而合成具有较低游离碳杂质相的碳化硼。对所有产物的相纯度和化学成分（硼、总碳和游离碳含量）进行了表征。发现碳化硼的形成即使在1000°C的较低温度下也会发生。在1600°C下，产品中的游离碳含量小于0.5 wt%。图形摘要

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来源期刊

Transactions of the Indian Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

2.3 months

期刊介绍： Transactions of the Indian Ceramic Society is a quarterly Journal devoted to current scientific research, technology and industry-related news on glass and ceramics. The Journal covers subjects such as the chemical, mechanical, optical, electronic and spectroscopic properties of glass and ceramics, and characterization of materials belonging to this family. The Editor invites original research papers, topical reviews, opinions and achievements, as well as industry profiles for publication. The contributions should be accompanied by abstracts, keywords and other details, as outlined in the Instructions for Authors section. News, views and other comments on activities of specific industries and organizations, and also analyses of industrial scenarios are also welcome.