Effect of heat treatment on friction and wear behavior of Ni-based thermal spray coating deposited on Z200C12 steel

被引：3
|
作者：
Alioui, Sarra [1 ]
Himour, Abdelaziz [1 ]
机构：
[1] Univ Badji Mokhtar, Lab Surface Engn LIS, POB 12, Annaba 23000, Algeria
来源：
MATERIALS RESEARCH EXPRESS | 2019年 / 6卷 / 12期
关键词：
flame spraying; Ni-based coating; heat treatment; microstructure; friction and wear; MECHANICAL-PROPERTIES; PLASMA; ALLOY; RESISTANCE;
D O I：
10.1088/2053-1591/ab58f0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present work investigates Ni-based alloy coating deposited on Z200C12 steel using thermal spray technique. It focuses on the effect of annealing treatment at 500 & xfffd;C for different durations of 2 h, 4 h and 8 h on friction and wear behavior of the coatings. Phase composition, substrate/coating interface, elemental distribution and coating wear tracks morphologies were characterized using x-ray diffraction, scanning electron microscope, energy dispersive spectrometer and x-ray mapping techniques. Friction and wear resistance of the as-sprayed and annealed coatings were studied by determining the coefficients of friction and wear rates using an Al2O3 ball under a load of 6 N. The results showed that the heat-treated coating at 500 & xfffd;C for 2 h exhibited the highest wear resistance and a substantially lower friction coefficient as compared to all other coatings. The observed wear mechanisms mainly involved fragmentation of splats, brittle fracture, and abrasive wear.
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页数：14
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