발간논문

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Vol.37, No.6, 707 ~ 715, 1999
Title
Research Paper / Surfacr Treatment : Microstructure and Surface Amorphous Phase Formation Induced by Sliding Wear of the Fe-Cr-B Alloy Thick Film Coatings Fabricated by Detonation Gun Process
진현우H . W . Jin, 임영목Y . M . Rhyim, 김문철M . C . Kim, 박찬경C . G . Park
Abstract
Thermal spray coating layers were prepared on the carbon steel plates with iron-chrome-boron alloy powders using a detonation gun under various fuel gas contents. The coating layer was composed of Fe rich Fe-Cr solid solution and (Cr. Fe)_xB particles, which had relatively a tow friction coefficient such as 0.05 and showed high wear resistance. The transition from crystalline to amorphous phase occurred during the wear treatment. TEM observation revealed that Fe-Cr solid solution phase with super-saturated B and Si was one of the main contributors for the transition. Oxide inclusions formed at an excess fuel gas condition may impede the crystalline to amorphous transition by lowering the solute content in Fe-Cr solid solution phase.
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