Effect of gradation on thermal and mechanical properties of reaction-bonded silicon carbide ceramics

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS International Journal of Applied Ceramic Technology Pub Date : 2024-11-03 DOI:10.1111/ijac.14964

Ruibin Liu, Yuhong Chen, Zhengxiang Chen, Wanxiu Hai, Meiling Liu

引用次数: 0

Abstract

Particle grading is a reliable method to improve mechanical properties of reaction-bonded silicon carbide (RBSC) ceramics. This work aims to explore the effects of particle grading on thermal and mechanical characteristics of RBSC ceramics. Results showed that the powder grading enabled to increase sintering density of silicon carbide (SiC) ceramics. The use of large particle SiC powder in grading led to a 28% increase in thermal conductivity but a 22% decrease in bending strength. Meanwhile, the addition of finer SiC powder exerted minimal effect on thermal conductivity but noticeably increased bending strength by 10%. Therefore, properly adjusting particle size in grading allows for the control of residual Si content and microstructure, thereby simultaneously increasing thermal conductivity and bending strength of the material.

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级配对反应结合碳化硅陶瓷热力学性能的影响

颗粒分级是改善反应结合碳化硅（RBSC）陶瓷力学性能的可靠方法。本研究旨在探讨颗粒级配对RBSC陶瓷热力学特性的影响。结果表明，粉末分级能提高碳化硅（SiC）陶瓷的烧结密度。在分级中使用大颗粒SiC粉末导致导热系数增加28%，但弯曲强度降低22%。同时，添加较细的SiC粉对导热系数影响较小，但弯曲强度明显提高10%。因此，在分级中适当调整粒度，可以控制残余Si含量和微观结构，从而同时提高材料的导热性和抗弯强度。

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

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;