SiC晶须增强高熵合金黏结Ti(C,N)金属陶瓷的性能研究

doi:10.19976/j.cnki.43-1448/TF.2023074

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摘要为改善高熵合金黏结金属陶瓷抗弯强度低的缺点,在Al_0.1CoCrFeNiV_0.1黏结Ti(C,N)金属陶瓷中加入SiC晶须,研究SiC晶须对金属陶瓷物相、显微结构、力学性能和摩擦磨损性能的影响。结果表明：少量SiC晶须的加入能促进碳化物固溶和细化Ti(C,N)晶粒,但加入量过大会导致固溶体成团。w(SiC)=1%时,金属陶瓷的抗弯强度和断裂韧性显著提高,抗弯强度的提高率达到21.4%;在摩擦过程中,金属陶瓷表面会形成连续光滑的摩擦膜,摩擦因数低且稳定,磨损率接近10^-6数量级。

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	周星宇
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	陈晨梓

关键词 ： Ti(C,N)金属陶瓷, 高熵合金, SiC晶须, 抗弯强度, 摩擦磨损性能

Abstract：In order to improve the bending strength of high entropy alloy bonded cermet, SiC whiskers were added in Al_0.1CoCrFeNiV_0.1bonded Ti(C,N) cermet, and the effects of SiC whiskers on the phase, microstructure, mechanical performance, and friction and wear performance of cermet were studied. The results show that few addition of SiC whiskers can promote the solid solution of carbide and refine the Ti(C,N) grains, but the excessive addition brings clusters of solid solution. When w(SiC)=1%, the bending strength and fracture toughness of cermet are evidently improved, the increasing rate of bending strength is 21.4%; during the process of friction, the cermet forms continuous and smooth tribolayer on the surface, exhibiting low and stable friction coefficient with wear ratio nearly to 10^-6 level.

Key words： Ti(C,N) cermet high entropy alloy SiC whisker bending strength friction and wear performance

收稿日期: 2023-10-07 出版日期: 2024-01-23

ZTFLH:

TG711

基金资助:宁夏回族自治区大学生创新创业训练项目(S202211407002); 北方民族大学中央高校基本科研业务费专项资金资助项目(2022XYZCL04)

通讯作者: 刘美玲,讲师,博士。电话：18395090716;E-mail: meilingliu@nmu.edu.cn

引用本文:

周星宇, 刘美玲, 曹雅璟, 张奇伟, 陈晨梓. SiC晶须增强高熵合金黏结Ti(C,N)金属陶瓷的性能研究[J]. 粉末冶金材料科学与工程, 2023, 28(6): 554-564.
ZHOU Xingyu, LIU Meiling, CAO Yajing, ZHANG Qiwei, CHEN Chenzi. Study on performance of SiC whisker reinforced high entropy alloy bonded Ti(C,N) cermet. Materials Science and Engineering of Powder Metallurgy, 2023, 28(6): 554-564.

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http://pmbjb.csu.edu.cn/CN/10.19976/j.cnki.43-1448/TF.2023074 或 http://pmbjb.csu.edu.cn/CN/Y2023/V28/I6/554

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