Effects of SiC addition on microstructure and properties of WC–6Co cemented carbide prepared by SPS

IF 1.9 4区材料科学 Q3 Materials Science

Journal of the Australian Ceramic Society Pub Date : 2022-03-12 DOI:10.1007/s41779-022-00728-z

Jun-feng Bao, Yue-guang Yu, Cheng-chang Jia

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引用次数: 2

Abstract

In order to further improve the comprehensive properties of WC–Co cemented carbide with low binder phase content, in this work, a series of WC–6Co cemented carbides with different SiC additions are prepared using SiC as the additive and sintered at 1400 °C for 5 min by Spark Plasma Sintering technology. Meanwhile, the effects of SiC content on the density, hardness, fracture toughness, and flexural strength of WC–Co cemented carbide are investigated by comparing the properties of the different sintered specimens. The results show that compared with the WC-6Co cemented carbide without SiC addition, the microstructure of the specimens with SiC addition has fewer pore defects and the matrix particles are refined. The properties such as density, Vickers hardness, fracture toughness, and flexural strength of these specimens are also improved to some extent. According to the comprehensive analysis, the whole performance of the specimen is best when 10% SiC is added, and its relative density, Vickers hardness, fracture toughness, and flexural strength increase to 98.5%, 2109 kg·mm⁻², 13.8 MPa·m^1/2, and 1854 MPa, respectively.

Abstract Image

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SiC添加量对SPS制备WC-6Co硬质合金组织和性能的影响

摘要:为了进一步提高低结合相含量WC-Co硬质合金的综合性能，本文以SiC为添加剂，采用火花等离子烧结技术，在1400℃下烧结5 min，制备了一系列不同SiC添加量的WC-6Co硬质合金。同时，通过对比不同烧结试样的性能，研究了SiC含量对WC-Co硬质合金密度、硬度、断裂韧性和抗弯强度的影响。结果表明:与未添加SiC的WC-6Co硬质合金试样相比，添加SiC的试样微观组织孔隙缺陷较少，基体颗粒细化;试样的密度、维氏硬度、断裂韧性、抗弯强度等性能均有一定程度的提高。综合分析，SiC添加量为10%时，试样整体性能最佳，其相对密度、维氏硬度、断裂韧性和抗弯强度分别提高到98.5%、2109 kg·mm−2、13.8 MPa·m1/2和1854 MPa。

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

Journal of the Australian Ceramic Society MATERIALS SCIENCE, CERAMICS-

CiteScore

3.20

自引率

5.30%

发文量

审稿时长

>12 weeks

期刊介绍： Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted