Synthesis of high purity Cr2AlC nanolamellas with improved tribological properties for oil-based additives

被引：18

作者：

Xue, Maoquan ^{[1
,2
]}

Zhang, Xianghua ^{[1
]}

Tang, Hua ^{[1
]}

Li, Changsheng ^{[1
]}

机构：

[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Changzhou Inst Light Ind Technol, Changzhou 213164, Jiangsu, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 74期

基金：

中国国家自然科学基金;

关键词：

SELECT MAX PHASES; MECHANICAL-PROPERTIES; OXIDATION BEHAVIOR; CERAMICS; TI3ALC2; CORROSION; CRYSTALS; PROGRESS; DENSE;

D O I：

10.1039/c4ra06719c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Herein, a novel simple method is presented to synthesize highly pure Cr2AlC powder by heating a 2Cr/xAl/C (molar ratio, x = 1, 1.1, 1.2) powder system between 1300 degrees C and 1400 degrees C with preliminary magnetic stirring mixing in alcohol. The purity of Cr2AlC is sensitive to the final temperature and raw material scale, and the excess Al plays a distinct role in improving the purity of the Cr2AlC. The tribological properties of Cr2AlC as an additive in 100SN base oil were evaluated by a UMT-2 ball-on-disc friction and wear tester. The results show that under determinate conditions, the base oil containing 0.6 wt% Cr2AlC sample presented good tribology performance under a load of 10 N. The improved tribological properties of the Cr2AlC samples could be attributed to the formation of a tribofilm in the friction process.

引用

页码：39280 / 39286

页数：7