Oxidation mechanism of PVD TiAlCrYN coating observed by analytical TEM

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LUO, Q., LEYENS, C., HOVSEPIAN, P. E., LEWIS, D. B., CONSTABLE, C. P. and MUNZ, W. D. (2001). Oxidation mechanism of PVD TiAlCrYN coating observed by analytical TEM. In: AINDOW, M. and KIELY, C. J., (eds.) Electron Microscopy and Analysis 2001. Institute of Physics Conference Series (168). Institute of Physics, 369-372. [Book Section]

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Abstract

Multicomponent TiAlCrYN coating has been grown on a titanium alloy TIMETAL 834 by combined cathodic arc etching and unbalanced magnetron sputtering. The coated system outperforms gamma-TiAl alloy Ti-48Al-2Cr-Nb by exhibiting linear oxidation after exposure for 1000h in air at 750degreesC. Cross-sectional analytical transmission electron microscopy combined with X-ray diffractometry and Raman spectroscopy has given detailed investigation of the nitride-oxide transition. A double-layered nano-polycrystalline oxide scale has been determined to be alumina-like (Al, Ti)(2)O-3 on top and rutile-like (Ti, Al)O-2 in subsurface.

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Conference of the Electron-Microscopy-and Analysis-Group SEP 05-07, 2001, DUNDEE, SCOTLAND

Research Institute, Centre or Group - Does NOT include content added after October 2018:

Materials and Engineering Research Institute > Materials Analysis and Research Services
Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Nanotechnology Centre for PVD Research

Page Range:

369-372

ISBN:

0951-32480-7503-0812-5

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