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Abrasive wear of textured-controlled CVD a-Al2O3 coatings
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik. (Tribologi)
Högskolan Dalarna, Akademin Industri och samhälle, Materialteknik.
2007 (Engelska)Ingår i: Surface & Coatings Technology, ISSN 0257-8972, E-ISSN 1879-3347, Vol. 202, nr 4-7, s. 837-843Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2007. Vol. 202, nr 4-7, s. 837-843
Nyckelord [en]
Abrasive wear; CVD coating; Al203; Metal cutting; Coatings texture
Nationell ämneskategori
Materialteknik
Identifikatorer
URN: urn:nbn:se:du-4466DOI: 10.1016/j.surfcoat.2007.06.063ISI: 000251618900045OAI: oai:dalea.du.se:4466DiVA, id: diva2:520145
Konferens
34th International Conference on Metallurgical Coatings and Thin Films, San Diego, April 23 - 27, 2007
Tillgänglig från: 2010-01-20 Skapad: 2010-01-20 Senast uppdaterad: 2017-12-07Bibliografiskt granskad

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Fallqvist, MikaelOlsson, Mikael
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