Effect of La2O3 on the wear behavior of MoSi2 at high temperature

被引：13

作者：

Zhang Houan ^{[1
]}

Gu Siyong ^{[1
]}

Xie Nengping ^{[2
]}

机构：

[1] Xiamen Univ Technol, Inst Mat Preparat & Appl Technol, Xiamen 361024, Peoples R China

[2] Hunan Univ Sci & Technol, Coll Electromech Engn, Xiangtan 411201, Peoples R China

来源：

JOURNAL OF RARE EARTHS | 2011年 / 29卷 / 04期

基金：

中国国家自然科学基金;

关键词：

MoSi2 matrix composite; wear; high temperature; La2O3; SiC; rare earths; ABRASIVE WEAR; MOLYBDENUM DISILICIDE; REINFORCED MOSI2; COMPOSITES;

D O I：

10.1016/S1002-0721(10)60462-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Wear behaviors of MoS2, doped with La2O3 against SiC under different loads at 1000 degrees C in air were investigated by using an XP-5 type high temperature friction and wear tester. The worn surfaces and phases of the samples were analyzed by scanning electron microscopy (SEM) and X-ray diffraction, respectively. Results showed that the addition of La2O3 could obviously improve wear resistance of MoSi2. Because of the formation of MoO3 phase on the worn surface, La2O3/MoSi2 composite mainly exhibited oxidation and abrasive wear, which was different from the wear form of MoSi2 such as adhesion, oxidation and abrasion.

引用

页码：370 / 373

页数：4

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