The corrosion behaviour of a novel Mg–Zn–Zr–Y–Cu alloy

Abstract

A novel Mg–Zn–Zr–Y–Cu alloy was fabricated, and its corrosion behaviour was investigated in the present work. The results showed that, compared with Mg–6Zn–0.5Zr (ZK60) alloy, Mg–6Zn–1Y–0.5Cu–0.5Zr (ZWCK6100) alloy exhibited finer recrystallised (DRXed) and unDRXed grains, more homogeneous microstructure, and contained CuMgZn and I phase (Mg3Zn6Y) in addition to α-Mg, Zn2Zr, MgZn2 precipitates. As a result, ZWCK6100 alloy had a lower corrosion rate and higher corrosion resistance, underwent slightly localised corrosion in 3.5 wt-% NaCl solution, implying that the combined addition of Y and Cu was conducive to improving the corrosion resistance of Mg alloys.

Effect of Longer Waiting Time During OCP and Pre-Applied Cleaning Potential In Corrosion Analysis of Zinc Metal

“…Zn alone was mentioned in the titles of approximately 4500 papers in 2022 and over 1300 papers in just the first quarter of 2023. While Zn is used in medical research for its effect on organisms [1], energy research for long-life metal batteries [2], and solar perovskite cells [3], micro-electronics research for semiconductors [4], Zn is also commonly used for anticorrosive surface preparation as standalone or in alloy structures [5][6][7][8]. Regardless of the main research focus of Zn-related studies, potentiodynamic corrosion investigations are widely employed.…”