Air oxidation behaviour of standard PVD and novel HIPIMS coatings at 750°C for 1000 h

Dudziak, Tomasz, Du, H. L., Datta, Psantu and Hovsepian, Papken (2015) Air oxidation behaviour of standard PVD and novel HIPIMS coatings at 750°C for 1000 h. Corrosion Engineering, Science and Technology, 50 (2). pp. 118-127. ISSN 1478-422X

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Abstract

High temperature oxidation resistance of Al2Au and TiAlCr standard PVD coatings and novel nano-structured CrAlYN/CrN coatings developed by HIPIMS technology was studied at 750°C for 1000 h. The results showed better high temperature oxidation resistance offered by HIPIMS coatings where protective oxide scales formed rich in Al and Cr, with lack of spallation and low mass gain during whole test duration was observed. In contrast Al2Au and TiAlCr coated materials showed thicker oxide scales, the samples coated by Al2Au and TiAlCr TiAl–8Nb alloy showed poorer corrosion resistance in air than that offered by the uncoated alloy. Post exposure analyses were performed by means of scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS).

Item Type:	Article
Uncontrolled Keywords:	TiAl, Oxidation, Coatings, High temperature, HIPIMS, SEM EDS
Subjects:	J500 Materials Technology not otherwise specified
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Ellen Cole
Date Deposited:	13 Sep 2016 16:30
Last Modified:	10 Oct 2019 17:05
URI:	http://nrl.northumbria.ac.uk/id/eprint/27713

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