{"title":"氧化钉提高了α-Al2O3在铝化物涂层上的结合力","authors":"Guo-Hui Meng, Pei-Pei Gui, Shan-Shan Li, Ya-Nan Wang, Ming-Yang Zhang, Kai-Yu Guo, Mei-Jun Liu, Guan-Jun Yang","doi":"10.1016/j.corsci.2025.112809","DOIUrl":null,"url":null,"abstract":"<div><div>This study aimed to improve the adhesion of α-Al<sub>2</sub>O<sub>3</sub> scale on aluminide coatings. Precipitation heat treatment at 1100°C in an inert atmosphere led to the formation of HfO<sub>2</sub> pegs on the coating surface. These pegs penetrated deep into the coating, mechanically anchoring the α-Al<sub>2</sub>O<sub>3</sub> scale and significantly improving its adhesion. The heat-treated coating exhibited reduced scale spallation and enhanced oxidation resistance. The formation of HfO<sub>2</sub> pegs was attributed to the surface oxidation of Hf segregated from the superalloy substrate to the coating surface. The surface segregation of Hf also contributed to a reduction in the growth rate of α-Al<sub>2</sub>O<sub>3</sub> scale, thereby helping to prevent scale spallation.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"249 ","pages":"Article 112809"},"PeriodicalIF":7.4000,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Oxide pegs improved α-Al2O3 scale adhesion on aluminide coatings\",\"authors\":\"Guo-Hui Meng, Pei-Pei Gui, Shan-Shan Li, Ya-Nan Wang, Ming-Yang Zhang, Kai-Yu Guo, Mei-Jun Liu, Guan-Jun Yang\",\"doi\":\"10.1016/j.corsci.2025.112809\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study aimed to improve the adhesion of α-Al<sub>2</sub>O<sub>3</sub> scale on aluminide coatings. Precipitation heat treatment at 1100°C in an inert atmosphere led to the formation of HfO<sub>2</sub> pegs on the coating surface. These pegs penetrated deep into the coating, mechanically anchoring the α-Al<sub>2</sub>O<sub>3</sub> scale and significantly improving its adhesion. The heat-treated coating exhibited reduced scale spallation and enhanced oxidation resistance. The formation of HfO<sub>2</sub> pegs was attributed to the surface oxidation of Hf segregated from the superalloy substrate to the coating surface. The surface segregation of Hf also contributed to a reduction in the growth rate of α-Al<sub>2</sub>O<sub>3</sub> scale, thereby helping to prevent scale spallation.</div></div>\",\"PeriodicalId\":290,\"journal\":{\"name\":\"Corrosion Science\",\"volume\":\"249 \",\"pages\":\"Article 112809\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2025-06-01\",\"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/S0010938X25001362\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/2/20 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Corrosion Science","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010938X25001362","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/20 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Oxide pegs improved α-Al2O3 scale adhesion on aluminide coatings
This study aimed to improve the adhesion of α-Al2O3 scale on aluminide coatings. Precipitation heat treatment at 1100°C in an inert atmosphere led to the formation of HfO2 pegs on the coating surface. These pegs penetrated deep into the coating, mechanically anchoring the α-Al2O3 scale and significantly improving its adhesion. The heat-treated coating exhibited reduced scale spallation and enhanced oxidation resistance. The formation of HfO2 pegs was attributed to the surface oxidation of Hf segregated from the superalloy substrate to the coating surface. The surface segregation of Hf also contributed to a reduction in the growth rate of α-Al2O3 scale, thereby helping to prevent scale spallation.
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
