Mechanical and tribological properties of NiCr-Al2O3 composites at elevated temperatures

被引：30

作者：

Liu, Feng ^{[1
,2
,3
]}

Jia, Junhong ^{[1
]}

Yi, Gewen ^{[1
]}

Wang, Wenzhen ^{[1
]}

Shan, Yu ^{[1
]}

机构：

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

[2] Xian Shiyou Univ, Sch Mat Sci & Engn, Xian 710065, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2015年 / 84卷

基金：

中国国家自然科学基金;

关键词：

NiCr-Al2O3; composites; Mechanical properties; Tribological properties; Elevated temperatures; IN-738LC SUPERALLOY; OXIDATION BEHAVIOR; SURFACE-CHEMISTRY; WEAR PROPERTIES; NICKEL; MICROSTRUCTURE; FRICTION; ALUMINA; ALLOY;

D O I：

10.1016/j.triboint.2014.11.023

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 effect of Al2O3 content on the mechanical and tribological properties of Ni-Cr alloy was investigated from room temperature to 1000 degrees C. The results indicated that NiCr-40 wt% Al2O3 composite exhibited good wear resistance and its compressive strength remained 540 MPa even at 1000 degrees C. The values obtained for flexural strength and fracture toughness at room temperature were 771 MPa, 15.2 MPa m(1/2), respectively. Between 800 degrees C and 1000 degrees C, the adhesive and plastic oxide layer on the worn surface of the composite was claimed to be responsible for low friction coefficient and wear rate. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：1 / 8

页数：8

共 36 条

[1]

Tribological properties of Ni-17.5Si-29.3Cr alloy at room and elevated temperatures [J].