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남수우 대한금속재료학회(대한금속학회) 1977 대한금속·재료학회지 Vol.15 No.1
고순도철 (Ferrovac E iron)에 전기분해 방법으로 수소를 주입시키는 경우 수소 주입 기구에 대하여 조사하였다. 실험 결과로부터, 수소가 철 속으로 확산되기 위하여 철 표면에 충분한 수소 원자 농도가 형성되어야 하며 이러한 수소 농도의 형성은 불순물로 첨가된 arsenic이 비정질 상태로 시편 표면에 전착되는 현상에 영향을 받는 것으로 생각된다. Using the Ferrovac E iron specimens cathodically charged with hydrogen, investigations of the mechanism of hydrogen entry into the alpha-iron were carried out. According to the experimental results, the delaying time due to the formation of hydrogen concentration at the metal surface was investigated in terms of the amount of amorphous arsenic electrodeposited on the cathode surface.
남수우 대한금속·재료학회 2017 대한금속·재료학회지 Vol.55 No.4
For the applications in automotive, aircraft, aerospace, and electronic industries, the lightest structural Mg alloys have received much attention since 2000. There has been some progress for the improvement of the mechanical properties such as room temperature strength, formability and mechanical anisotropy. However, the high temperature strength of Mg alloys is very low to be used for the parts and structures of high temperature conditions. For the last decade, considerable efforts are concentrated for the development of Mg alloys to be used at high temperature. Newly developing Mg-RE alloys are the good examples for the high temperature use. In this regard, this review paper introduces the recent research trends for the development of Mg-RE alloys strengthened with some precipitates and the long period stacking ordered (LPSO) structures related RE elements.