Influence of laser-produced microstructures on the tribological behaviour of ceramics

被引：86

作者：

Geiger, M ^{[1
]}

Roth, S ^{[1
]}

Becker, W ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Inst Mfg Technol, D-91058 Erlangen, Germany

来源：

SURFACE & COATINGS TECHNOLOGY | 1998年 / 100卷 / 1-3期

关键词：

tribology; excimer laser; microstructuring; ceramics;

D O I：

10.1016/S0257-8972(97)00581-1

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ceramic surfaces were microstructured by excimer laser radiation in order to improve the tribological properties under hydrodynamic and elastohydrodynamic sliding conditions. The laser-induced lubricant pockets generated high local pressures and thus caused a thicker lubricant film, allowing an optimal separation of the contact surfaces even at lower sliding velocities. Wear-intensive boundary lubrication at frequent starting and running-out procedures may be minimized. Initial studies investigating the influence of different geometries of lubricant pockets on the film thickness were carried out using a block-on-ring tribometer. The results for alumina and silicon carbide showed that the structuring of the surface topography resulted in a significant improvement in the lubricant film thickness compared with untreated surfaces. (C) 1998 Elsevier Science S.A.

引用

页码：17 / 22

页数：6