High temperature performance of TiAlON thin films
Conference proceedings article
Authors/Editors
Strategic Research Themes
No matching items found.
Publication Details
Author list: Tuchida K., Wathanyu K., Auechalitanukul C., Surinphong S.
Publisher: Trans Tech Publications
Publication year: 2013
Volume number: 622
Start page: 690
End page: 694
Number of pages: 5
ISBN: 9783037855638
ISSN: 1022-6680
eISSN: 1662-8985
Languages: English-Great Britain (EN-GB)
Abstract
In this paper, the thermal oxidation behavior, adhesion and tribological properties of TiAlON films coated on hastelloyX substrate, typically used for fuel nozzle in gas turbine engine application, have been studied. The uncoated and coated samples were heated to different temperatures, i.e. 950, 1050 and 1150 ฐC in the controlled atmosphere. The surface appearance, microstructure, chemical composition and adhesion of films were investigated. The thermal oxidations were observed in all testing conditions showing thicker oxide film at higher temperature. However, spalling of oxide scales was found in hastelloyX and TiAlON coated at 1150ฐC suggesting the maximum working temperature of < 1150 ฐC. The critical loads corresponding to the full delamination of the thermal oxidation coated specimens were found to be higher than the non-thermal oxidation specimens. The effect of thermal oxidation on damage patterns during scratch tests, i.e. less chipping and cracking for thermal oxidation specimen, were also observed. The tribological properties were also investigated under different load under room temperature and 600 and 1000ฐC. The results suggested significant improvement in wear resistance of coated sample especially at low load at all temperatures. ฉ (2013) Trans Tech Publications, Switzerland.
Keywords
Cathodic arc PVD, TiAlON, Wear rate
Contact Information