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Abrasive wear of textured-controlled CVD a-Al2O3 coatings
Dalarna University, School of Technology and Business Studies, Materials Technology. (Tribologi)
Dalarna University, School of Technology and Business Studies, Materials Technology.
2007 (English)In: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 202, no 4-7, 837-843 p.Article in journal (Refereed) Published
Abstract [en]

In the present study the wear resistance of some CVD alpha-Al2O3 coatings with different growth textures, i.e. <0001>, <10<(1)over bar>2> and <10<(1)over bar>4>, and a kappa-Al2O3 coating have been investigated using a micro-abrasion test with diamond particles as the abrasive medium. The results show that the softer kappa-Al2O3 coating shows a higher wear rate as compared with the textured alpha-Al2O3 coatings. Of the latter coatings, the 101¯4 textured a-Al2O3 coating shows the lowest wear rate while the <0001> and <10<(1)over bar>2> textured alpha-Al2O3 coatings show similar wear rate. Two different dominant wear mechanisms, i.e. micro cutting and micro chipping, were observed and the latter mechanism is believed to control the wear rate of the Al2O3 coatings investigated. The results obtained are discussed in relation to the dominant wear mechanisms of the coatings identified using scanning electron microscopy.

Place, publisher, year, edition, pages
2007. Vol. 202, no 4-7, 837-843 p.
Keyword [en]
Abrasive wear; CVD coating; Al203; Metal cutting; Coatings texture
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:du-4466DOI: 10.1016/j.surfcoat.2007.06.063ISI: 000251618900045OAI: oai:dalea.du.se:4466DiVA: diva2:520145
Conference
34th International Conference on Metallurgical Coatings and Thin Films, San Diego, April 23 - 27, 2007
Available from: 2010-01-20 Created: 2010-01-20 Last updated: 2015-12-15Bibliographically approved

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CiteExportLink to record
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Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
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  • Other style
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  • nn-NB
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