Tribofilm formation on the VN/7075 composite surface under sulfur-containing boundary lubrication

被引：7

作者：

Bai, Yaping ^{[1
]}

Liu, Mengmeng ^{[1
]}

Li, Jianping ^{[1
]}

Guo, Yongchun ^{[1
]}

机构：

[1] Xian Technol Univ, Sch Mat & Chem Engn, 2 Xuefuzhonglu Ave,Weiyang Coll Pk, Xian 710021, Shaanxi, Peoples R China

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART J-JOURNAL OF ENGINEERING TRIBOLOGY | 2020年 / 234卷 / 11期

基金：

中国国家自然科学基金;

关键词：

VN; 7075; composite; microstructure; sulfur-containing boundary lubrication; tribofilm; wear behavior; WEAR BEHAVIOR; TRIBOLOGICAL BEHAVIOR; MICROSTRUCTURAL CHARACTERIZATION; DEFORMATION-BEHAVIOR; MATRIX COMPOSITES; SLIDING WEAR; AL; 7075; ALLOY; FRICTION;

D O I：

10.1177/1350650120930165

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, Al7075 alloy and 15 wt% VN/7075 composite were prepared by ball milling and hot-press sintering. The microstructure, hardness, and wear behavior under different working conditions (environmental condition: dry friction, sulfur-containing boundary lubrication, and oil lubrication) were studied. The results showed that the distribution of VN was dispersive and uniform in 15 wt% VN/7075 composite without obvious agglomeration. The hardness (119.5 Hv) of 15 wt% VN/7075 composite was 46.1% higher than the Al7075 alloy (81.8 Hv). Friction and wear behavior test results showed that under sulfur-containing boundary lubrication condition, according to the tribofilm layer on the worn surface of 15 wt% VN/7075 composite, the friction coefficient of 15 wt% VN/7075 composite decreased by 37.6% compared with the Al7075 alloy. The main wear mechanism of 15 wt% VN/7075 composite was delamination wear and abrasive wear under dry friction, while under sulfur-containing boundary lubrication and oil lubrication, it changed to mild abrasive wear.

引用

页码：1726 / 1734

页数：9

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