叶轮表面激光熔覆TiC/Co涂层摩擦-磨损性能研究

孙明珠; 沈辉; 张猛; 殷超; 凌曦; 韦梦圆

doi:10.15980/j.tzzz.2020.06.019

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叶轮表面激光熔覆TiC/Co涂层摩擦-磨损性能研究
Friction-wear Performance of Laser Cladding TiC/Co Coating on Impeller Surface
2020年40卷第6期页码：658-663
纸质出版日期： 2020 ，
DOI： 10.15980/j.tzzz.2020.06.019

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[1]孙明珠,沈辉,张猛,殷超,凌曦,韦梦圆.叶轮表面激光熔覆TiC/Co涂层摩擦-磨损性能研究[J].特种铸造及有色合金,2020,40(06):658-663.

Sun Mingzhu, Shen Hui, Zhang Meng, et al. Friction-wear Performance of Laser Cladding TiC/Co Coating on Impeller Surface[J]. Special Casting & Nonferrous Alloys, 2020,40(6):658-663.
[1]孙明珠,沈辉,张猛,殷超,凌曦,韦梦圆.叶轮表面激光熔覆TiC/Co涂层摩擦-磨损性能研究[J].特种铸造及有色合金,2020,40(06):658-663. DOI： 10.15980/j.tzzz.2020.06.019.

Sun Mingzhu, Shen Hui, Zhang Meng, et al. Friction-wear Performance of Laser Cladding TiC/Co Coating on Impeller Surface[J]. Special Casting & Nonferrous Alloys, 2020,40(6):658-663. DOI： 10.15980/j.tzzz.2020.06.019.

摘要

在洗扫车专用风机不锈钢叶轮表面上采用激光熔覆技术制备了TiC含量分别为15%、20%、25%的TiC/Co涂层

利用SEM、EDS、XRD、显微硬度计等手段

分析了涂层的表面-截面形貌、化学成分、物相和硬度

研究了TiC与Co配比对涂层摩擦-磨损性能的影响

并讨论了其磨损机理。结果表明

3组涂层的平均摩擦因数分别为0.46、0.31和0.28;TiC含量为15%和20%的涂层均以粘着磨损和氧化磨损为主

TiC含量为25%的涂层以粘着磨损和氧化磨损为主

并伴有磨料磨损;TiC含量为20%的涂层磨损较轻微

耐磨性能最佳

适用于叶轮表面。

Abstract

TiC/Co coating with 15%

20% and 25% SiC content was prepared on the surface of stainless steel impeller of special fan for road washing sweeper by laser cladding technology.By using SEM

EDS

XRD

microhardness tester and other means of analysis

the surface-section morphology

chemical compositions

phases and hardness of the coating prepared were examined

and effects of the TiC to Co ratio on friction-wear performance of the coatings were analyzed.In addition

the wear mechanism was described.The results reveal that the average friction coefficient of the coatings with 15%

20% and 25% SiC content reach 0.46

0.31 and 0.28

respectively.The coatings with 15% and 20% SiC content are mainly characterized by adhesive wear and oxidation wear

while the coating with 25% SiC content is mainly characterized by adhesive wear and oxidation wear accompanying with abrasive wear.The coating with 20% SiC content presents slightly wear with excellent abrasion resistance

which is suitable for impeller surface.