Effects of ZrO2 Addition Amount on Microstructure and Mechanical Property of WC-6Co Prepared by Spark Plasma Sintering

被引：0
|
作者：
Bao J.-F. [1 ,2 ,3 ]
Yu Y.-G. [2 ,3 ]
Jia C.-C. [1 ]
机构：
[1] Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing
[2] BGRIMM Technology Group, Beijing
[3] Beijing Engineering Technology Research Center of Surface Strengthening and Repairing of Industry Parts, Beijing
来源：
Yu, Yue-Guang (yuyg@bgrimm.com) | 1600年 / Northeast University卷 / 42期
关键词：
Mechanical property; Microstructure; Spark plasma sintering (SPS); WC-6Co cemented carbide; ZrO[!sub]2[!/sub;
D O I：
10.12068/j.issn.1005-3026.2021.01.007
中图分类号：
学科分类号：
摘要：
A series of WC-6Co cemented carbides with different amount of ZrO2 addition were quickly prepared by spark plasma sintering (SPS) and the effects of ZrO2 addition on the microstructure and mechanical properties of the alloys were investigated. The results show that with the increasing ZrO2 additive amount, the microstructure of the sample becomes more condensed, the relative density is greater and the hardness and fracture toughness also increase. When the mass fraction of ZrO2 addition is 3%, the performance of the tested sample is the best one, in which the relative density is 96.7%, the Vickers hardness is 20.28 kN•mm-2 and the fracture toughness is 12.7 MPa•mm1/2. It is found that the ZrO2 can enhance the sintering by promoting the ion diffusion and the particle rearrangement, leading to the improvement of the relative density and mechanical property of the cemented carbides. © 2021, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：43 / 48
页数：5
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