Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403


공학

한국표면공학회지 (30권3호 159-166)

Electrodeposition of Zr on AISI 304 Stainless Steel in Molten Chlorides.

염화물계 혼합염욕중에서 AISI 304 Srainless Steel의 Zr 전해피복에 관한연구

반장호;백영현;

고려대학교 공과대학 재료·금속공학부;

Abstract

The metalliding technique was adopted to obtain the diffusion coating of zirconium on AISI 304 Stainless Steel in molten mixed chlorides (32.9wt.%LICl-34.8wt.%NaCl-32.3wt.%). Experiments were carried out in argon gas atmosphere. The electrolytic cell was consisted of a AISI 304 Stainless steel cathode and a consumable zirconium anode. The quality of deposit was analysed by SEM, Optical Microscope, EDS, and also examined by the Micro-Vickers hardness and corrosion tests. Interface of deposit layer was identified as zirconium-iron alloy layer caused by diffusion process at elevated temperatures. The optimum condition for the metalliding was found to be the bath temperature of $550^{circ}C$, the concentration of $K_2ZrF_6$ ,5wt.%, cathodic current derrent density of 7.0 to 10.0mA/$ extrm{cm}^2$ , and anodic current density of 2.0mA/$ extrm{cm}^2$.

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