Influence of hardness ratio on scratch failure of coatings

K. H. Lau; K. Y. Li; Y. W. Mai

doi:10.1504/IJSURFSE.2007.013618

Influence of hardness ratio on scratch failure of coatings

K. H. Lau, K. Y. Li, Y. W. Mai

Research output: Journal article publication › Journal article › Academic research › peer-review

8 Citations (Scopus)

Abstract

The effects of hardness ratio of coating to substrate on the scratching characteristics of four different kinds of coatings (Al, W, TiN and Ti_1-xAl_xN) deposited on aluminium, tungsten carbide and three types of M42 high speed steel were investigated. Based on the observed failure modes on the scratch tracks using scanning electron microscopy, coating failure maps consisting of regions of no failure mixed failure total coating break-through are constructed. The loading required for a particular failure mode decreases with increasing hardness ratio.

Original language	English
Pages (from-to)	3-21
Number of pages	19
Journal	International Journal of Surface Science and Engineering
Volume	1
Issue number	1
DOIs	https://doi.org/10.1504/IJSURFSE.2007.013618
Publication status	Published - 2007
Externally published	Yes

Keywords

coatings
failure map
hardness ratio
scratch test

ASJC Scopus subject areas

Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1504/IJSURFSE.2007.013618

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AB - The effects of hardness ratio of coating to substrate on the scratching characteristics of four different kinds of coatings (Al, W, TiN and Ti1-xAlxN) deposited on aluminium, tungsten carbide and three types of M42 high speed steel were investigated. Based on the observed failure modes on the scratch tracks using scanning electron microscopy, coating failure maps consisting of regions of no failure mixed failure total coating break-through are constructed. The loading required for a particular failure mode decreases with increasing hardness ratio.

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Influence of hardness ratio on scratch failure of coatings

Abstract

Keywords

ASJC Scopus subject areas

More information

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