40cr steel
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Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7437
Author(s):  
Gaoqiang Jiang ◽  
Chengyun Cui ◽  
Lu Chen ◽  
Yucheng Wu ◽  
Xigui Cui

To improve the wear and corrosion resistance of the pump barrel material (40Cr steel), a (M:Nb,Ta)C/Ni35 composite cladding coating by in situ synthesis of composite carbides was conducted. The effects of ceramic micro-particles content on the phase composition, microstructure of the coating, structural characteristics of (M:Nb,Ta)C and the tribology and electrochemical corrosion behavior were systematically studied. The increase of ceramic micro-particles changed the morphology of (M:Nb,Ta)C with the size from sub-micron to micron. The (M:Nb,Ta)C dispersed along the grain boundary inhibits the growth of the grains. During friction, the spherical structure exhibited a rolling lubrication effect and the petal structure provided a stronger attachment ability to resist the shear. The corrosion occurred at the grains, exhibiting corrosion pits, in which the high content ceramic micro-particles were relatively shallow. Moreover, a few dot corrosion pits were distributed along the grain boundaries without (M:Nb,Ta)C. Therefore, to improve the corrosion resistance, a thin composite carbide coating with good wear and corrosion resistance was prepared.





2021 ◽  
pp. 129-133
Author(s):  
Cheng Li ◽  
Yanle Li ◽  
Xiaoxia Qi ◽  
Jiyu Du ◽  
Fangyi Li


2021 ◽  
Vol 68 ◽  
pp. 79-89
Author(s):  
Ruiyang Ni ◽  
Wentao Hou ◽  
Yifu Shen ◽  
Wenming Liu ◽  
Fujun Cao ◽  
...  


Optik ◽  
2021 ◽  
Vol 231 ◽  
pp. 166458
Author(s):  
Wei Cheng ◽  
Xiaolei Zhang ◽  
Jinzhong Lu ◽  
Fengze Dai ◽  
Kaiyu Luo


2021 ◽  
Vol 135 ◽  
pp. 106714
Author(s):  
Hui Li ◽  
Hong Zhou ◽  
Huanxi Chen ◽  
Peng Zhang ◽  
Ti Zhou ◽  
...  






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