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Journal of KWJS 2007;25(4):42-48.
Published online September 21, 2007.
진공 열 플라즈마 용사공정을 통한 NiTiZrSiSn 벌크 비정질 코팅 형성
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Vacuum Plasma Sprayed NiTiZrSiSn Coating
Sanghoon Yoon, Juneseob Kim, Sooki Kim, Changhee Lee
Abstract
  An inert gas atomized NiTiZrSiSn bulk metallic glass feedstock was sprayed onto the copper plate using vacuum plasma spraying process. In order to change the in-flight particle energy, that is, thermal energy, the hydrogen gas flow rate in plasma gas mixture was increased at the constant flow rate of argon gas. Coating and single pass spraying bead were produced with the least feeding rate. Regardless of the plasma gas composition, fully melted through unmelted particle could be observed on the overlay coating. However, the frequency of the unmelted particle number density was increased with the decrease of the hydrogen gas flow rate. The amorphous phase fraction within coating was also affected by the number density of the unmelted particle.
Key Words: NiTiZrSiSn bulk amorphous feedstock, Vacuum plasma spraying, Melting state, Phase composition


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