EFFECT OF MICROSTRUCTURE ON SLIDING CONTACT DAMAGE AND WEAR OF CERAMIC COATINGS

被引：0
|
作者：
Ajayi, O. O. [1 ]
Fenske, G. R. [1 ]
Shareef, I. [2 ]
机构：
[1] Argonne Natl Lab, Div Energy Technol, 9700 S Cass Ave, Argonne, IL 60439 USA
[2] Bradley Univ, Dept Mfg Engn, Peoria, IL 61625 USA
来源：
MECHANICAL PROPERTIES AND PERFORMANCE OF ENGINEERING CERAMICS AND COMPOSITES II | 2007年 / 27卷 / 02期
关键词：
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hard and wear resistant ceramics coatings are often applied to metallic surfaces to enhance their tribological performance. Using the scratch and twin roller tests, we evaluated the surface contact damage and the mechanism of wear in different ceramic coating. In amorphous diamond-like carbon coating, the damage and eventual material removal occurred by straight cracking that follows the trajectory of the tensile stresses. Damage in a crystalline titanium nitride (TiN) coating with a columnar grain structure occurred primarily by inter-columnar cracking perpendicular to the surface. For crystalline chromium nitride (CrN) coating with equiaxed grains, contact damage consisted primarily of grain boundary cracking and wear is due to surface-layer grain pullout. Results of the present study showed the dominant effect of ceramic coating microstructure on the contact damage and wear mechanism.
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页码：687 / +
页数：2
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