Effects of Al2O3 platelet and VC additive on sintering and mechanical properties of WC-based composites by hot pressing

IF 1.3 4区材料科学 Q3 MATERIALS SCIENCE, CERAMICS

Advances in Applied Ceramics Pub Date : 2021-01-02 DOI:10.1080/17436753.2020.1840266

W. Dong, Shigen Zhu, B. Han, Bowen Fan, Ze Sun, Yilan Luo, Yunfeng Bai

引用次数: 1

Abstract

ABSTRACT Fully dense WC-Al2O3 platelet composites with VC additive were fabricated by hot-press sintering. Their mechanical properties and microstructure were examined. The contents of Al2O3 platelet (Al2O3pl) and VC were optimised. The fracture toughness of WC-based composites would be obviously improved with Al2O3pl addition. The defined addition of VC was beneficial for the densification and improved mechanical properties of the WC-based composites. The microstructure of the composites was fine, compact and homogeneous compared with the composites without VC addition. The range of fracture toughness of WC-Al2O3pl composites was 9.3–13.5 MPa m1/2. The flexural strength of the composites varied a little and the maximum was 1289 MPa when the content of Al2O3pl was 5 vol.-%, the content of VC was 0.5wt-%.

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Al2O3血小板和VC添加剂对wc基复合材料热压烧结和力学性能的影响

采用热压烧结法制备了VC添加剂的WC-Al2O3全致密片状复合材料。对其力学性能和显微组织进行了检测。优化了Al2O3血小板(Al2O3pl)和VC的含量。Al2O3pl的加入能明显提高wc基复合材料的断裂韧性。确定VC的添加量有利于wc基复合材料的致密化和力学性能的改善。与未添加VC的复合材料相比，复合材料的显微组织细、致密、均匀。WC-Al2O3pl复合材料的断裂韧性范围为9.3 ~ 13.5 MPa m1/2。当Al2O3pl含量为5 vol.-%， VC含量为0.5wt .-%时，复合材料的抗弯强度变化不大，最大可达1289 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

Advances in Applied Ceramics 工程技术-材料科学：硅酸盐

CiteScore

4.40

自引率

4.50%

发文量

审稿时长

5.2 months

期刊介绍： Advances in Applied Ceramics: Structural, Functional and Bioceramics provides international coverage of high-quality research on functional ceramics, engineering ceramics and bioceramics.