Study on the Mechanism of Adhesion Improvement Using Dry-Ice Blasting for Plasma-Sprayed Al2O3 Coatings

被引：18
作者：
Dong, Shujuan [1 ]
Song, Bo [1 ]
Hansz, Bernard [2 ]
Liao, Hanlin [1 ]
Coddet, Christian [1 ]
机构：
[1] UTBM, IRTES LERMPS, F-90010 Belfort, France
[2] HMRexpert, Impasse Bliss, F-25490 Fesches Le Chatel, France
来源：
JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2013年 / 22卷 / 2-3期
关键词：
adhesion; alumina; atmospheric plasma spraying; dry-ice blasting; RESIDUAL-STRESSES; SUBSTRATE ROUGHNESS;
D O I：
10.1007/s11666-012-9872-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanisms of adhesion improvement of plasma-sprayed Al2O3 coatings using dry-ice blasting were investigated. In this study, the change of substrate surface characteristics in both the topography and the wettability due to the treatment of dry-ice blasting was mainly studied. The effect of dry-ice blasting on Al2O3 splat morphology with different treatment durations was also examined. The residual stress of plasma-sprayed Al2O3 coatings using dry-ice blasting was measured by curvature method and compared to that of coatings deposited with conventional air cooling. Based on these numerous assessment tests, it could be concluded that the adhesion improvement of Al2O3 coatings could be attributed to the cleaning effect of dry-ice blasting on different organic substances adsorbed on the substrates and the peening effect.
引用
收藏
页码：213 / 220
页数：8
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