Friction behavior of alumina/molybdenum composites and formation of MoO3-x phase at 400 °C

被引：38

作者：

Cura, M. E. ^{[1
]}

Liu, X. W. ^{[1
]}

Kanerva, U. ^{[2
]}

Varjus, S. ^{[2
]}

Kivioja, A. ^{[3
]}

Soderberg, O. ^{[1
]}

Hannula, S-P. ^{[1
]}

机构：

[1] Aalto Univ, Dept Mat Sci & Engn, FI-00076 Aalto, Finland

[2] VTT Tech Res Ctr Finland, Adv Mat, FI-02044 Espoo, Finland

[3] Aalto Univ, Dept Forest Prod Technol, FI-00076 Aalto, Finland

来源：

TRIBOLOGY INTERNATIONAL | 2015年 / 87卷

基金：

芬兰科学院;

关键词：

Solid lubricant; High temperature lubrication; Raman spectroscopy; Nanoscratch; ANION-DEFICIENT RUTILE; MSIP-PVD PROCESS; TRIBOLOGICAL BEHAVIOR; FLASH TEMPERATURES; LUBRICIOUS OXIDES; MOLYBDENUM OXIDE; MAGNELI PHASES; PART II; WEAR; CONTACT;

D O I：

10.1016/j.triboint.2015.02.010

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Self-lubricating Al2O3+1-10 vol% Mo composites were synthesized by pulsed electric current sintering. Molybdenum was found to strongly influence the coefficient of friction against alumina. Lubricious oxide of Mo4O11 formed within the wear track during wear at 400 degrees C and reduced the coefficient of friction. The composites with Mo had coefficient of friction of 0.35-0.71 at 25 degrees C and 0.27-0.36 at 400 degrees C. No measureable wear was observed for composites with 1, 2.5 and 5 vol% Mo. Nanoscratch tests were performed inside the wear tracks to study the friction properties of the transfer film. Alumina molybdenum composites performed as wear resistant materials with very good friction properties at 400 degrees C owing formation of Mo4O11 during wear. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：23 / 31

页数：9

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