Improvement of Deposition Efficiency and Control of Hardness for Cold-Sprayed Coatings using High Carbon Steel/Mild Steel Mixture Powder
Kazuhiro OGAWA; Satoshi AMAO; Nobuyuki YOKOYAMA
JOURNAL OF MATERIALS SCIENCE
abstract:In this study, in order to make high carbon steel coating by cold spray technique, spray conditions such as carrier gas temperature and pressure etc. were investigated. And also, in order to improve deposition efficiency and control coating hardness of cold-sprayed high carbon steel, high carbon and mild steel mixed powder and its mechanical milled powder were developed and were optimized. By using the cold-spray technique, particle deposition of a high carbon steel was successful. Moreover, by applying mixed and mechanical milled powders, the porosity ratio was decreased and deposition efficiency was improved. Furthermore, using these powders, it is possible to control the hardness value. Especially, when using mechanical milled powder, it is very difficult to identify the interface between the coating and the substrate. The bonding between the coating and the substrate is thus considered to be excellent.
keywords:Cold Spray, Deposition Efficiency, High Carbon Steel, Mild Steel
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