In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 595-598 ( 2008-9), p. 143-150
Abstract:
MCrAlY coatings (where M = Co, Ni or Co/Ni) are widely used on turbine blades and
vanes as oxidation and corrosion resistant overlays or as a bond-coating in thermal barrier coatings systems. MCrAlY are usually fabricated by Plasma Spraying, Physical Vapour Deposition, High
Velocity Oxy-Fuel spraying or electrolytic techniques. The use of emergent Spark Plasma Sintering technique as a preparation method for NiCoCrAlYTa coatings has been presented previously [1]. SPS technique allows fast development of new coatings with a one-step fabrication of multilayered
coatings. This work presents first results of the long term isothermal oxidation behaviour of Pt-Ni aluminide/NiCoCrAlYTa multi layered coatings. The obtained coating is dense and homogeneous.
Isothermal oxidation up to 500 h at 1100°C leads to the formation of an adherent alumina scale with Y-rich precipitates and deep intergranular oxidation.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.595-598
DOI:
10.4028/www.scientific.net/MSF.595-598.143
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2008
detail.hit.zdb_id:
2047372-2
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