한빛사 논문
한국과학기술연구원(KIST)
Krishnamohan Thekkepata,b,c,1, Hyung-Seop Hand,1, Ji-Won Choid, Seung-Cheol Leea,b,c,∗, Eul Sik Yoone, Guangzhe Lid, Hyun-Kwang Seokd,f, Yu-Chan Kimd,f,∗, Jae-Hun Kimg, Pil-Ryung Chag,∗
aIndo-Korea Science and Technology Center, Jakkur, Bangalore 560065, India bDivision of Nano & Information Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea cElectronic Materials Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea dCenter for Biomaterials, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea eDepartment of Plastic and Reconstructive Surgery, Korea University College of Medicine, Seoul 02841, Republic of Korea fDivision of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea gSchool of Advanced Materials Engineering, Kookmin University, Seoul 02707, Republic of Korea
1These authors contributed equally to this work.
∗Corresponding author
Abstract
Formation of galvanic cells between constituent phases is largely responsible for corrosion in Mg-based alloys. We develop a methodology to calculate the electrochemical potentials of intermetallic compounds and alloys using a simple model based on the Born-Haber cycle. Calculated electrochemical potentials are used to predict and control the formation of galvanic cells and minimize corrosion. We demonstrate the applicability of our model by minimizing galvanic corrosion in Mg-3wt%Sr-xZn alloy by tailoring the Zn composition. The methodology proposed in this work is applicable for any general alloy system and will facilitate efficient design of corrosion resistant alloys.
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