Influence of the abrasive particles size in the micro-abrasion wear tests of TiAlSiN thin coatings

• Type: Article in International Scientific Journal
• Date: 2009

Authors

M. F. C. Andrade (Author) Other; R. P. Martinho (Author) Other; F. J. G. Silva (Author) Other; R. J. D. Alexandre (Author) Other; A. P. M. Baptista (Author) FEUP

Journal

Title: Wear

Vol. 267 No. 58

Pages: 12-18

ISSN: 0043-1648

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 13 Citations

ISI Web of Science

Scopus - 14 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-003-J81

DOI: 10.1016/j.wear.2008.12.114

Abstract (EN): Ball rotating micro-abrasion tribometers are commonly used to carry out wear tests on thin hard coatings. In these tests, different kinds of abrasives were used, as alumina (Al(2)O(3)), silicon carbide (SiC) or diamond. In each kind of abrasive, several particle sizes can be used. Some studies were developed in order to evaluate the influence of the abrasive particle shape in the micro-abrasion process. Nevertheless, the particle size was not well correlated with the material removed amount and wear mechanisms. In this work, slurry of SiC abrasive in distilled water was used, with three different particles size. Initial surface topography was accessed by atomic force microscopy (AFM). Coating hardness measurements were performed with a micro-hardness tester. In order to evaluate the wear behaviour. a TiAlSiN thin hard film was used. The micro-abrasion tests were carried out with some different durations. The abrasive effect of the SiC particles was observed by scanning electron microscopy (SEM) both in the films (hard material) as in the substrate (soft material), after coating perforation. Wear grooves and removed material rate were compared and discussed. (C) 2009 Elsevier B.V. All rights reserved.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7