Effect of additive content on the microstructure and room-temperature and high-temperature mechanical properties of Si3N4 ceramics

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-12-13 DOI:10.1111/ijac.15013

Songmo Du, Fei Li, Jie Zhang, Zhanglin Chen, Shijia Zhang, Shuo Zhao, Dengke Zhao, Binbin Fan, Kexin Chen, Guanghua Liu

引用次数: 0

Abstract

Si₃N₄ ceramics with uniform grain size distribution were fabricated using spark plasma sintering method and post-heat treatment. The effect of sintering additive content on the grain growth and room-temperature and high-temperature mechanical properties of Si₃N₄ ceramics were studied. By modulating the competitive growth of β-Si₃N₄ grains along the basal and the prism planes, the grains in Si₃N₄ ceramics were homogeneous. The room-temperature and high-temperature flexural strength of the samples after post-heat treatment were tested. At temperature above 1300°C, the samples with lower sintering additive content exhibit higher strength.

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添加剂含量对Si3N4陶瓷显微组织及室温和高温力学性能的影响

采用火花等离子烧结和后处理法制备了晶粒尺寸分布均匀的Si3N4陶瓷。研究了烧结添加剂含量对Si3N4陶瓷晶粒生长和室温、高温力学性能的影响。通过调节β-Si3N4晶粒沿基面和棱柱面的竞争生长，使Si3N4陶瓷中的晶粒具有均匀性。测试了热处理后试样的室温和高温抗弯强度。在1300℃以上的温度下，烧结添加剂含量越低的试样强度越高。

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;