Friction and wear of binder-less niobium carbide

被引：36

作者：

Woydt, Mathias ^{[1
]}

Mohrbacher, Hardy ^{[2
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, DE-12200 Berlin, Germany

[2] Niobelcon BVBA, BE-2970 Schilde, Belgium

来源：

WEAR | 2013年 / 306卷 / 1-2期

关键词：

Sliding friction; Sliding wear; Ceramic; Coating; NbC;

D O I：

10.1016/j.wear.2013.07.013

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The tribological profile of alumina (99.7%) mated against binder-less niobium carbide (NbC) rotating disks were determined unidirectional sliding tests (0.1-7.5 m/s; 22 degrees C and 400 degrees C) as well as in oscillation tests (f=20 Hz, Delta x=0.2 mm, 2/50/98% rel. humidity, n=10(5)/10(6) cycles) under un-lubricated (dry) conditions. In addition, the microstructure and mechanical properties of NbC were determined as well. The reason for testing hot-pressed NbC was to avoid side effects generated by sintering additives and/or second phases. The tribological data obtained were benchmarked with different ceramics, cermets and thermally sprayed coatings. NbC exhibited low wear rates under dry sliding associated with high load carrying capacity. The tribological profile established revealed a strong position of NbC under tribological considerations and for closed tribo-systems against traditional references, such as WC, Cr3C2, (Ti,Mo) (C,N), etc. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：126 / 130

页数：5

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