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http://dx.doi.org/10.7837/kosomes.2013.19.5.538

Evaluation of Cavitation Characteristics for ALBC3 Alloy Coated with Ni-Cr Series Self Fluxing Alloy in Marine Environment  

Lee, Seung-Jun (Division of Marine Engineering, Mokpo Maritime University)
Kim, Seong-Jong (Division of Marine Engineering, Mokpo Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.19, no.5, 2013 , pp. 538-544 More about this Journal
Abstract
In this study, cavitation characteristics of a thermal spray coating were evaluated in order to improve durability and cavitation resistance. For a coating material, a Ni-based self-fluxing alloy was thermal-sprayed over a ALBC3 alloy substrate and subsequently modified by heat treatment.The resulted self-fluxing coating layer had relatively high hardness compared to the base material, and thus would be expected to exhibit good durability. However, the cavitation characteristics were deteriorated due to the intrinsic porous structure of the coating. Therefore, it is essential to optimize heat treatment condition during thermal spraying coating process for self-fluxing alloy, and in this research the increase in heat treatment temperature is thought to increase the fluidity of B and Si in the self-fluxing alloy and to remove pores or defects, leading to the characteristics enhancement.
Keywords
ALBC3 alloy; Self fluxing alloy; Cavitation; Seawater; Heat treatment;
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Times Cited By KSCI : 3  (Citation Analysis)
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