Effect of silver vanadate on the lubricating properties of NiCrAlY laser cladding coating at elevated temperatures
Xin BB(辛本斌)1,2; Yu YJ(俞友军)1; Zhou JS(周健松)1; Wang LQ(王凌倩)1; Ren SF(任书芳)1; Li Z(李珍)1
刊名Surface & Coatings Technology
2016
卷号307页码:136-145
关键词NiCrAlY based composites Tribological properties Elevated temperature Lubrication mechanism Synergistic lubricating effect
ISSN号0257-8972
通讯作者俞友军 ; 周健松
英文摘要

Self-lubricating coating NiCrAlY/Cr3C2 (NiCr)/V2O5/Ag2O was prepared by laser cladding. Two different kinds of contrast samples were prepared in order to verify the excellent tribological properties of the composite coating. The composition and microstructure of the composite coating were characterized by X-ray diffractometry, scanning electron microscopy with energy spectrum analyzer (SEM-EDS). The tribological behavior of the coating from 25 °C to 800 °C was evaluated by a ball-on-disk tribometer and dual-mode 3D surface profiler, the corresponding wear mechanism of the composite coating was investigated by Raman spectroscopy. It has been found that the composite coating shows better tribological properties than the compared coatings when the temperature higher than 400 °C, the friction coefficient of composite coating was 0.143 and the wear rate was 2.86 × 10− 5 mm3/Nm at 800 °C. All these can be attributed to formation of the self-lubricant Ag3VO4 and AgVO3 with lamella structure on the worn surface. The wear mechanism of the composite coating is dominated by plastic deformation, delamination and adhesive wear at elevated temperature.

学科主题材料科学与物理化学
收录类别SCI
资助信息the National Natural Science Foundation of China (Grant No. 51475444;51505464;51405475)
语种英语
WOS记录号WOS:000390622200016
内容类型期刊论文
源URL[http://210.77.64.217/handle/362003/20420]  
专题兰州化学物理研究所_先进润滑与防护材料研究发展中心
兰州化学物理研究所_固体润滑国家重点实验室
作者单位1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China
2.Graduate School of Chinese Academy of Sciences, Beijing 100039, PR China
推荐引用方式
GB/T 7714
Xin BB,Yu YJ,Zhou JS,et al. Effect of silver vanadate on the lubricating properties of NiCrAlY laser cladding coating at elevated temperatures[J]. Surface & Coatings Technology,2016,307:136-145.
APA Xin BB,Yu YJ,Zhou JS,Wang LQ,Ren SF,&Li Z.(2016).Effect of silver vanadate on the lubricating properties of NiCrAlY laser cladding coating at elevated temperatures.Surface & Coatings Technology,307,136-145.
MLA Xin BB,et al."Effect of silver vanadate on the lubricating properties of NiCrAlY laser cladding coating at elevated temperatures".Surface & Coatings Technology 307(2016):136-145.
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