• 제목/요약/키워드: 플레임용사

검색결과 1건 처리시간 0.018초

$Al_2O_3$세라믹 용사피막의 특성개선에 관한 연구 (A Study on the Improvement of Properties of Sprayed $Al_2O_3$ Ceramic Coating Layer.)

  • 김정일;이주원;최영국;김영식
    • Journal of Advanced Marine Engineering and Technology
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    • 제24권1호
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    • pp.49-58
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    • 2000
  • Thermal spraying is one of the most common surface coating techniques to be used for many applications and flame spraying covers a wide range of different materials which can be coated onto various substrates. The purpose of this study is to investigate the effects of mixed ratio in composite coatings on the mechanical and anti-corrosion properties. The five different types of composite coatings were made with $Al_2O_3$ ceramic and Ni-alloy powder on the mild steel substrate by flame spraying method. The mechanical properties such as microhardness, adhesive strength and erosion resistance and corrosion resistance were tested for the sprayed coating specimens. The results obtained are summarized as follows; 1. The composite coating layers greatly improve the microstructure, erosion resistance and adhesive strength by increasing the content of Ni-Al alloy. 2. Microhardness of the compsite coating layer is decreased by increasing the content of Ni-Al alloy. 3. The anti-corrosion properties is considerably improved by increasing the compsite rate of Ni-Al alloy.

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