Evaluation of Al2O3 MOCVD Coating for Titanium Alloys Protection under Severe Conditions at High Temperature

Abstract:

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The corrosion resistance of MOCVD Al2O3 coating system was investigated to protect a TA6V Alloy under hot salt corrosion conditions: This coating was corroded with a salt deposit without mechanical loading at 480°C during 100 h. Corrosion products formed in salted areas were studied by Energy Dispersive Spectroscopy (EDS). Although all coated specimens were damaged with corrosion products presence in salted area, Al2O3 coatings showed the lowest salt damage on titanium substrate after a metallographic cross section observation compared to uncoated ones. As well as these interesting experimental results, coated specimens exhibit a good adherence on titanium substrate

Info:

Periodical:

Materials Science Forum (Volumes 595-598)

Edited by:

Pierre Steinmetz, Ian G. Wright, Alain Galerie, Daniel Monceau and Stéphane Mathieu

Pages:

719-724

DOI:

10.4028/www.scientific.net/MSF.595-598.719

Citation:

J. D. Béguin et al., "Evaluation of Al2O3 MOCVD Coating for Titanium Alloys Protection under Severe Conditions at High Temperature ", Materials Science Forum, Vols. 595-598, pp. 719-724, 2008

Online since:

September 2008

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$35.00

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