Yi-Jun Lin, Siao-Ying Chen, Wei-Liang Chien, Zong-Syun Yang, Chao-Sung Lin
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引用次数: 0
Abstract
Permanganate conversion coating, a potential alternative to chromate conversion coating, was employed on WE43-T5 Mg alloys. A continuous MnO2/Mg(OH)2 coating was observed on the Mg matrix and micrometric second-phase particles (Mg24Y5, Zr-rich particle). In contrast, no coating formed at grain boundaries, and prolonged immersion resulted in cracks within the grains. These defects were detrimental to the corrosion resistance. A second treatment in ZrF62- solution healed these defects via ZrO2 precipitation. This MnO2/ZrO2 composite coating efficiently enhanced the corrosion in 3.5 wt% NaCl, including reduced corrosion current density and corrosion area ratio, and escalated breakdown potential and total impedance.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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