Tribological properties of Ni-17.5Si-29.3Cr alloy at room and elevated temperatures

被引：13

作者：

Bi, Qinling ^{[1
]}

Liu, Weimin ^{[1
]}

Yang, Jun ^{[1
]}

Ma, Jiqiang ^{[1
]}

Xue, Qunji ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2010年 / 43卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Ni-17.5Si-29.3Cr alloy; High temperature; Tribological properties; SLIDING WEAR; MECHANICAL-PROPERTIES; MICROSTRUCTURE; NI3SI; BORON; EMBRITTLEMENT; DEFORMATION; SILICIDES; COATINGS; BEHAVIOR;

D O I：

10.1016/j.triboint.2009.05.014

中图分类号：

TH [机械、仪表工业];

学科分类号：

120111 [工业工程];

摘要：

The tribological properties of Ni-17.5Si-29.3Cr alloy against Si3N4 were studied on a ball-on-disc tribotester between room temperature and 1000 degrees C. The effects of temperature on the tribological properties of the alloy were investigated. The worn surfaces of the alloy were examined using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The results indicated that the tribological behavior of the alloy expressed some differences with increase in testing temperature. At low and moderate temperatures (below 800 degrees C), the alloy showed excellent wear and oxidation resistances, and the wear rate of the alloy remained in the magnitude of 10(-5) mm(3)/Nm; but at elevated temperature (800-1000 degrees C), the wear and oxidation resistances decreased, and the wear rate of the alloy increased Up to 10(-4) mm(3)/Nm. The friction coefficient decreased from 0.58 to 0.46 with the rising of testing temperature from 20 to 600 degrees C, and then remained nearly constant. The wear mechanism of the alloy was mainly fracture and delamination at low and moderate temperatures, and transformed to adhesive and oxidation at elevated temperatures. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：136 / 143

页数：8

共 30 条

[1]

Sliding wear of Ni-17.5Si-29.3Cr alloy under water lubrication [J].