Combination Effect of Dry-Ice Blasting and Substrate Preheating on Plasma-Sprayed CoNiCrAlY Splats

被引：7

作者：

Dong, Shujuan ^{[1
]}

Song, Bo ^{[1
]}

Hansz, Bernard ^{[2
]}

Liao, Hanlin ^{[1
]}

Coddet, Christian ^{[1
]}

机构：

[1] LERMPS Univ Technol Belfort Montbeliard, F-90010 Belfort, France

[2] HMRexpert, F-25490 Fesches Le Chatel, France

来源：

JOURNAL OF THERMAL SPRAY TECHNOLOGY | 2013年 / 22卷 / 01期

关键词：

atmospheric plasma spray (APS); dry-ice blasting; MCrAlY; splat morphology;

D O I：

10.1007/s11666-012-9845-z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

CoNiCrAlY splats were plasma-sprayed on the stainless steel substrate which was pretreated by dry-ice blasting. Only impact marks were distinguished on the glycerol-polluted substrate, while halo donut splats formed on the pretreated substrate because of the cleaning effect of dry-ice blasting on this organic substance. The proportions of different splat types vary as a function of the treatment time of dry-ice blasting. The condensation phenomenon was also detected on the substrate surface accompanying the cleaning effect after the pretreatment of dry-ice blasting. In this study, dry-ice blasting was investigated to be coupled with substrate preheating to control the substrate temperature. It was found that a regular disk-like CoNiCrAlY splat can be obtained as the substrate temperature is higher than dew point temperature.

引用

页码：61 / 68

页数：8

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