Influence of spray materials and their surface oxidation on the critical velocity in cold spraying

C. J. Li, H. T. Wang, Q. Zhang, G. J. Yang, W. Y. Li, H. L. Liao

科研成果: 期刊稿件文章同行评审

127 引用 (Scopus)

摘要

The critical velocity is an important parameter in cold spraying, which determines the deposition efficiency under a given spray condition. The critical velocity depends not only on materials types, but also on particle temperature and oxidation conditions. In the present paper, three types of materials including copper, 316L stainless steel, Monel alloy were used to deposit coatings by cold spraying. The critical velocities of spray materials were determined using a novel measurement method. The oxygen content in the three powders was changed by isothermal oxidation at ambient atmosphere. The effect of oxygen content on the critical velocity was examined. It was found that the critical velocity in cold spray was significantly influenced by particle oxidation condition besides materials properties. The critical velocity of Cu particles changed from about 300 m/s to over 610 m/s with the change of oxygen content in powder. It is evident that the materials properties influence the critical velocity more remarkable at low oxygen content than at high oxygen content. The results suggest that with a severely oxidized powder the critical velocity tends to be dominated by oxide on the powder surface rather than materials properties.

源语言英语
页(从-至)95-101
页数7
期刊Journal of Thermal Spray Technology
19
1-2
DOI
出版状态已出版 - 1月 2010

指纹

探究 'Influence of spray materials and their surface oxidation on the critical velocity in cold spraying' 的科研主题。它们共同构成独一无二的指纹。

引用此