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李鴻魯 충남대학교 공업교육연구소 1981 論文集 Vol.4 No.2
Copper was electroplated until 100㎛ thickness in the Standard Strike bath at temperature from 35 to 70℃ over the range of current density from 1.5 to 18 A/dm2. Copper deposits had nearly (110) preferred orientations within these experimental conditions. Very rough surfaces with high angle pyramids were formed at low temperatures and low current densities, while smooth surfaces at high temperatures and low current densities. But at high current densities, regardless of temperatures, only smooth surfaces were formed. By increasing temperature of the bath or by increasing the current density of the bath, microthrowing power seemed to be elevated.
李鴻魯 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.2
To gain a 80% Sn-20% Zn electroplated alloy, the effects of various electrodeposition conditions (deposition temperature and cathode current density) were studied. At deposition temperature from 60℃ to 75℃ and at constant current density at 1A/d㎡, 2A/d㎡, 3A/d㎡, 4A/d㎡ and 5A/d㎡, Sn-Zn were codeposited in stannate-cyanide alkaline electrolyte bath. The Zn content of Sn-Zn alloy deposits increased with cathode current density up to 5A/d㎡ But at constant cathode current density the Zn content increased with temperature up to 65℃, and then decreased down to 75℃. Sn-Zn alloy deposits were composed of two-phase fine mixture of β-Sn and Zn. To obtain a 80% Sn-20% Zn eutectic alloy, 4A/d㎡ cathode current density and 70℃ bath temperature were most appropriate. The preferred orientations of β-Sn were (112) plane at all experimental conditions but at constant bath temperature, preference of (112) plane was decreased. The preferred orientations of Zn crystals were strongly (004) plane regardless of cathode current density and bath temperature.
趙統來,李鴻魯,朴承甲 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1
Ternary miscibility gap of the Pb-Cu-S system is important to smelting of lead and copper, but we can not find experimental determination of this system. Ternary miscibility gap of the Pb-Cu-S sytem was experimentally determined at 1250℃. Isoactivities tie line of lead, copper and sulfer in this ternary miscibility gap of the Pb-Cu-S system was determined.