Title of article
A comparative study of DS NiCrAlY coating and LPPS NiCrAlY coating
Author/Authors
Zhang، نويسنده , , Y.J. and Sun، نويسنده , , X.F. and Zhang، نويسنده , , Y.C. and Jin، نويسنده , , T. and Deng، نويسنده , , C.G. and Guan، نويسنده , , H.R. and Hu، نويسنده , , Z.Q.، نويسنده ,
Pages
5
From page
65
To page
69
Abstract
Two thermal spraying techniques, namely, detonation gun spraying (DS) and low pressure plasma spraying (LPPS), were used to prepare different NiCrAlY coatings on a single crystal (SC) Ni-based superalloy. Microstructure, surface hardness, adhesion strength and high-temperature oxidation behavior of DS NiCrAlY coating and LPPS NiCrAlY coating were compared. The results showed that the two coatings in as-sprayed state had the same splat layer structure. Somewhat differently, oxidation reaction took place in DS process and Al2O3 sandwiched between the splats in DS NiCrAlY coating. It is found that the surface hardness of DS coatings are higher than those of LPPS coating. But the oxidation resistance of DS coating is relatively lower.
Keywords
Detonation gun spraying , microstructure , Low-pressure plasma spraying , Oxidation resistance
Journal title
Astroparticle Physics
Record number
2062585
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