Sputtered Si-containing low-friction carbon coatings for elevated temperatures

被引：35

作者：

Jantschner, O. ^{[1
]}

Field, K. ^{[2
]}

Music, D. ^{[3
]}

Terziyska, V. L. ^{[1
]}

Schneider, J. M. ^{[3
]}

Munnik, F. ^{[4
]}

Zorn, K. ^{[5
]}

Mitterer, C. ^{[1
]}

机构：

[1] Univ Leoben, Dept Phys Met & Mat Testing, A-8700 Leoben, Austria

[2] Teer Coatings, Berry Hill Ind Estate, Droitwich WR9 9AS, Worcs, England

[3] Rhein Westfal TH Aachen, D-52074 Aachen, Germany

[4] Helmholtz Zentrum Dresden Rossendorf, D-01328 Dresden, Germany

[5] MIBA High Tech Coatings, A-4655 Vorchdorf, Austria

来源：

TRIBOLOGY INTERNATIONAL | 2014年 / 77卷

关键词：

Amorphous carbon; Elevated temperatures; Thermal stability; Temperature induced lubrication; DIAMOND-LIKE-CARBON; TRIBOLOGICAL BEHAVIOR; MECHANICAL-PROPERTIES; RAMAN-SPECTROSCOPY; THIN-FILMS; C-H; THERMAL-STABILITY; LUBRICANT; DLC; WATER;

D O I：

10.1016/j.triboint.2014.04.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This work presents a tribological study on three sputtered amorphous carbon-based coatings containing Si and Cr (a-C, a-C:Cr and a-C:Si). Molecular dynamics simulations predict tetrahedral bonds between C and Si in the a-C matrix. Ball-on-disk-tests against Al2O3 carried out at room temperature revealed a coefficient of friction of 0.08-0.1 for all films. Between 250 and 325 degrees C, Si decreases the COF and wear rate to <0.05 and <5 x 10(-17) m(3)/N x laps, respectively. The a-C reference shows a COF of 0.15 +/- 0.05 and a wear rate of 1 x 10(-16) m(3)/N x laps, whereas the a-C:Cr film failed. The improved tribological performance of a-C:Si expands its application temperature to 450 degrees C and is most probably related to formation of Si-compounds on the film surface, as evidenced by X-ray photoelectron spectroscopy. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：15 / 23

页数：9

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