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The CVD Aluminizing of TiAl Intermetallics

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Abstract:

The article presents the first attempt to CVD-aluminise alloys based on an intermetallic phase Ti48Al2Cr2Nb. Moreover, it includes initial results of producing VPA-deposited aluminide coating in industrial environment. Microstructure and phase analyses of the obtained coatings have been conducted. The chemical and phase composition analyses have revealed that the CVD-deposited coating was roughly 8 m thick, and composed of aluminium-rich TiAl phase, whereas the application of VPA method results in a coating which is approximately 18 m thick and consists of three layers made up of TiAl3, TiAl2 i TiAl phases. Both deposition processes were conducted with industrial equipment.

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Applied Crystallography XXII View Preview

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Periodical:

Solid State Phenomena (Volumes 203-204)

Pages:

327-330

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.203-204.327

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Online since:

June 2013

Authors:

Marek Goral, Andrzej Nowotnik, Jan Sieniawski

Keywords:

CVD Aluminizing, Oxidation, Protective Coatings, TiAl Intermetallics

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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