混合粒度对改善反应粘结B4C力学性能的影响

IF 1.5 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS Transactions of the Indian Ceramic Society Pub Date : 2023-01-02 DOI:10.1080/0371750X.2023.2173301

P. Barick, B. Saha

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引用次数: 0

摘要

本研究旨在通过在初始预成型体中使用两种碳化硼（B4C）粉末来改善反应结合碳化硼（RBBC）的力学性能。实验结果表明，与单一粉末（即细B4C粉末）相比，两种粉末组合生产的RBBC的杨氏模量、努氏硬度和弯曲强度分别提高了～15.2%、～33.8%和～15.5%。在用混合粉末生产的RBBC中，陶瓷相（B4C和B4C+SiC）的增加和残余Si含量的降低导致其机械性能的提高。两种RBBC都表现出压痕尺寸效应，其各自的脆性指数证实了这一特性。图形摘要

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Mixed Particle Size Effect on Improvement of Mechanical Properties of Reaction Bonded B4C

The research was aimed for improving the mechanical properties of reaction bonded boron carbide (RBBC) through use of two boron carbide (B4C) powders in the initial preform. Experimental results show that the Young’s modulus, Knoop hardness, and flexural strength of RBBC, produced with the combination of two powders, are greater by ∼15.2%, ∼33.8% and ∼15.5%, respectively, compared to that produced with single, i.e. fine B4C powder. The increase in ceramic phase (B4C and B4C +SiC) and reduction in residual Si content in the RBBC produced with mixed powders lead to an enhancement in its mechanical properties. Both RBBC exhibit indentation size effect and such characteristics are corroborated by their respective brittleness index. GRAPHICAL ABSTRACT

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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.