Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4285
Título: Role of abrasive material on micro-abrasion wear tests
Autor: Silva, Francisco J. G.
Casais, R. B.
Martinho, R. P.
Baptista, A. P. M.
Palavras-chave: Micro-abrasion
TiB2 hard coating
Abrasive particles
Wear tests
Abrasive materials
Data: 2011
Editora: Elsevier
Relatório da Série N.º: Wear; Vol. 271, Issue 9-10
Resumo: Micro-abrasion wear tests with ball-cratering configuration are widely used. Sources of variability are already studied by different authors and conditions for testing are parameterized by BS EN 1071-6: 2007 standard which refers silicon carbide as abrasive. However, the use of other abrasives is possible and allowed. In this work, ball-cratering wear tests were performed using four different abrasive particles of three dissimilar materials: diamond, alumina and silicon carbide. Tests were carried out under the same conditions on a steel plate provided with TiB2 hard coating. For each abrasive, five different test durations were used allowing understanding the initial wear phenomena. Composition and shape of abrasive particles were investigated by SEM and EDS. Scar areas were observed by optical and electronic microscopy in order to understand the wear effects caused by each of them. Scar geometry and grooves were analyzed and compared. Wear coefficient was calculated for each situation. It was observed that diamond particles produce well-defined and circular wear scars. Different silicon carbide particles presented dissimilar results as consequence of distinct particle shape and size distribution.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4285
ISSN: 0043-1648
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0043164811002493
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