Yao Yang , Sijun Cao , Tao Ying , Fuyong Cao , Jingya Wang , Qingchun Zhu , Xiaoqin Zeng
{"title":"腐蚀产物膜对钇微合金化mg -铝合金在氯化物溶液中腐蚀行为的影响","authors":"Yao Yang , Sijun Cao , Tao Ying , Fuyong Cao , Jingya Wang , Qingchun Zhu , Xiaoqin Zeng","doi":"10.1016/j.corcom.2022.10.002","DOIUrl":null,"url":null,"abstract":"<div><p>Micro-alloying Mg alloys with rare earth elements is an economical and promising way to improve their corrosion resistance. It is of great importance to understand their corrosion behavior for designing corrosion-resistant Mg alloys. In this work, Mg-11Al-0.2Y alloy was prepared for exploring its corrosion behavior in 3.5 wt.% neutral NaCl solution. It exhibits a low corrosion current density of 2.3 µA/cm<sup>2</sup> after immersion for 1 d due to the formation of a protective surface film containing Al<sub>2</sub>O<sub>3</sub>, MgO and Mg(OH)<sub>2</sub>. However, nano-scaled pores exhibit at the film/matrix interface, which undermines integrity and protectiveness of the surface film after long-term exposure to chloride solution.</p></div>","PeriodicalId":100337,"journal":{"name":"Corrosion Communications","volume":"11 ","pages":"Pages 12-22"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"The effects of a corrosion product film on the corrosion behavior of Mg-Al alloy with micro-alloying of yttrium in a chloride solution\",\"authors\":\"Yao Yang , Sijun Cao , Tao Ying , Fuyong Cao , Jingya Wang , Qingchun Zhu , Xiaoqin Zeng\",\"doi\":\"10.1016/j.corcom.2022.10.002\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Micro-alloying Mg alloys with rare earth elements is an economical and promising way to improve their corrosion resistance. It is of great importance to understand their corrosion behavior for designing corrosion-resistant Mg alloys. In this work, Mg-11Al-0.2Y alloy was prepared for exploring its corrosion behavior in 3.5 wt.% neutral NaCl solution. It exhibits a low corrosion current density of 2.3 µA/cm<sup>2</sup> after immersion for 1 d due to the formation of a protective surface film containing Al<sub>2</sub>O<sub>3</sub>, MgO and Mg(OH)<sub>2</sub>. However, nano-scaled pores exhibit at the film/matrix interface, which undermines integrity and protectiveness of the surface film after long-term exposure to chloride solution.</p></div>\",\"PeriodicalId\":100337,\"journal\":{\"name\":\"Corrosion Communications\",\"volume\":\"11 \",\"pages\":\"Pages 12-22\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Corrosion Communications\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2667266923000282\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Communications","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2667266923000282","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The effects of a corrosion product film on the corrosion behavior of Mg-Al alloy with micro-alloying of yttrium in a chloride solution
Micro-alloying Mg alloys with rare earth elements is an economical and promising way to improve their corrosion resistance. It is of great importance to understand their corrosion behavior for designing corrosion-resistant Mg alloys. In this work, Mg-11Al-0.2Y alloy was prepared for exploring its corrosion behavior in 3.5 wt.% neutral NaCl solution. It exhibits a low corrosion current density of 2.3 µA/cm2 after immersion for 1 d due to the formation of a protective surface film containing Al2O3, MgO and Mg(OH)2. However, nano-scaled pores exhibit at the film/matrix interface, which undermines integrity and protectiveness of the surface film after long-term exposure to chloride solution.
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