4.7 Article

Novel WC-Co-Ti3SiC2 cemented carbide with ultrafine WC grains and improved mechanical properties

期刊

CERAMICS INTERNATIONAL
卷 48, 期 15, 页码 22335-22342

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2022.04.239

关键词

WC-Co cemented Carbides; Ti3SiC2; Microstructure; Hardness; Indentation fracture toughness

资金

  1. National Natural Science Foundation of China [51572224]
  2. Key Project of Science and Technology of Shaanxi Province [2017KW-019]
  3. 111 Project [BP0820014]
  4. Natural Science Foundation of Guangdong Province [2018A030307017]
  5. Innovative Team in Higher Educational Institutions of Guangdong Province (Natural Science) [2020KCXTD039]

向作者/读者索取更多资源

WC-Co-Ti3SiC2 cemented carbides with different fractions of Ti3SiC2 were successfully prepared and characterized in this study. The addition of Ti3SiC2 resulted in refined WC grains in the composites, and the refinement was achieved by the decomposition of Ti3SiC2. The optimal composition of 3.0 wt% Ti3SiC2 exhibited excellent hardness and indentation fracture toughness values.
New WC-Co-Ti3SiC2 cemented carbides with different fractions of Ti3SiC2 were prepared and characterised in this study. The composites were processed by hot isostatic pressing, and their microstructural characteristics and mechanical properties were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), electron backscatter diffraction (EBSD), transmission electron microscopy (TEM) energy-dispersive X-ray (EDX) and indentation methods. The addition of Ti3SiC2 resulted in refined WC grains in the composites with uniform and narrow size distribution in the composites. Refinement was achieved by the decomposition of Ti3SiC2. The optimal composition of WC-Co-Ti(3)SiC(2)was established to be 3.0 wt% of Ti3SiC2 when the hardness and indentation fracture toughness exhibited excellent values of 2076 kgf/mm2 and 10.1 MPa m1/2, respectively. The strengthening and toughening of WC-Co-Ti3SiC2 were attributed to the refinement of WC grains and to the intrinsic layered structure of Ti3SiC2, respectively.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据