Yuan-Pei Gong , Peng-Peng Wu , Shao-Hua Zhang , Yue-Zhong Zhang , Bao-Sheng Liu , Guang-Ling Song
{"title":"Refinement and protectiveness of the calcium carbonate coating on Mg substrates","authors":"Yuan-Pei Gong , Peng-Peng Wu , Shao-Hua Zhang , Yue-Zhong Zhang , Bao-Sheng Liu , Guang-Ling Song","doi":"10.1016/j.corsci.2025.112680","DOIUrl":null,"url":null,"abstract":"<div><div>In this work, conversion solutions with pH of 6.2–7.5 were prepared by a new method of bubbling CO<sub>2</sub> into a saturated Ca(OH)<sub>2</sub> solution to refine the calcium carbonate coating (CCC) on pure Mg and AZ91 alloy. Effects of solution condition and Mg substrate on CCC formation were studied. The CCC had the same constituent on varied substrates. In the pH 6.2 solution, the CCC consisted of aragonite. Increasing solution pH led to increased calcite content in CCC. The CCC grain-refinement occurred on the AZ91 owing to the micro-galvanic effect. Both phase constituent and grain size significantly influenced the CCC protectiveness.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"245 ","pages":"Article 112680"},"PeriodicalIF":7.4000,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25000071","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this work, conversion solutions with pH of 6.2–7.5 were prepared by a new method of bubbling CO2 into a saturated Ca(OH)2 solution to refine the calcium carbonate coating (CCC) on pure Mg and AZ91 alloy. Effects of solution condition and Mg substrate on CCC formation were studied. The CCC had the same constituent on varied substrates. In the pH 6.2 solution, the CCC consisted of aragonite. Increasing solution pH led to increased calcite content in CCC. The CCC grain-refinement occurred on the AZ91 owing to the micro-galvanic effect. Both phase constituent and grain size significantly influenced the CCC protectiveness.
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.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
