Fabrication and Characterization of Low Pressure Cold Sprayed Copper Coatings

DOI 21 References

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Other Title
  • 低圧コールドスプレー法による銅皮膜の作製と評価

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Abstract

Cold spray has attracted a great deal of attention for fabrication of thick, high purity metallic coatings. In cold spray, metal particles are accelerated by process gas with solid phase and deposited onto substrate or previously deposited coating. In order to increase the particle velocity to deposit harder metal materials, the process gas pressure need to be higher. However, using high gas pressure needs large facility and much gas consumption. In this study, the availability of low pressure cold spray upon fabrication of copper coatings was examined. Copper particles were sprayed with changing process gas temperature and pressure which was less than 1 MPa. It was effective to raise the gas temperature to enhance the deposition efficiency. It was possible to fabricate copper coatings with high deposition efficiency with controlling the gas temperature and pressure by low pressure cold spraying. The optimal particle size of copper powder was determined empirically for low pressure cold spraying. The hardness of the coatings did not depend on the porosity of the coatings, but depended on the process gas temperature. Process gas temperature affected not only deposition efficiency but also the characteristics of the coatings such as electrical conductivity.

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Details 詳細情報について

  • CRID
    1390282679704019712
  • NII Article ID
    10030885111
  • NII Book ID
    AN1005067X
  • DOI
    10.2207/qjjws.25.548
  • ISSN
    24348252
    02884771
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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