Some Features of High-Temperature Oxidation of Aluminide Coatings on Alloy TsNK-7P

Some Features of High-Temperature Oxidation of Aluminide Coatings on Alloy TsNK-7P

Special features of high-temperature oxidation of aluminide coatings (slip-deposited Al - Si and ion-plasma-deposited VSDP-11) on alloy TsNK-7P are considered. The kinetics of the oxidation process, the element composition, and the microhardness of coatings with different thicknesses are described....

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Veröffentlicht in:Metal science and heat treatment 2004-07, Vol.46 (7-8), p.349-354
Hauptverfasser: Smyslov, A M, Nev'yantseva, R R, Bybin, A A
Format: Artikel
Sprache:eng
Schlagworte:
Aluminides
Aluminum
Coatings
Diffusion coating
Heat resistance
Intermetallics
Metallurgy
Oxidation
Silicon
Thermal fatigue
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Zusammenfassung:Special features of high-temperature oxidation of aluminide coatings (slip-deposited Al - Si and ion-plasma-deposited VSDP-11) on alloy TsNK-7P are considered. The kinetics of the oxidation process, the element composition, and the microhardness of coatings with different thicknesses are described. Results of thermal fatigue tests of alloy TsNK-7P with aluminide diffusion coatings are presented. It is shown that the VSDP-11 coating ensures a higher heat resistance and thermal fatigue strength on alloy TsNK-7P than the Al - Si coating and can replace the latter on turbine vanes of gas compressor units.[PUBLICATION ABSTRACT]
ISSN:0026-0673
1573-8973
DOI:10.1023/B:MSAT.0000048847.01636.a7