Xiaoyuan Hu , Faguo Li , Yu Zhang , Licheng Jia , Houwen Chen , Yongxiong Liu , Yi Yang , Fucheng Yin
{"title":"两步热浸预氧化法制备ti65合金Ti-Al-Si复合涂层的显微组织特征及长期高温抗氧化性","authors":"Xiaoyuan Hu , Faguo Li , Yu Zhang , Licheng Jia , Houwen Chen , Yongxiong Liu , Yi Yang , Fucheng Yin","doi":"10.1016/j.corsci.2025.112808","DOIUrl":null,"url":null,"abstract":"<div><div>The Ti-Al-Si composite coating on Ti65 alloy consists of Ti<sub>3</sub>Al, TiAl, Ti<sub>3</sub>Al<sub>5</sub> + TiAl<sub>2</sub>, Ti(Al, Si)<sub>3</sub>, and Al<sub>2</sub>O<sub>3</sub> prepared by two-step hot-dipping plus pre-oxidation method. The phase structure and elemental distribution of the alloy phase layer were analyzed by XRD, SEM-EDS, HRTEM, and AC-TEM. During prolonged oxidation, many mixed oxides of TiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> formed in the longitudinal thermal cracks, sealing the cracks. Moreover, the Ti<sub>3</sub>Al phase acted as a barrier to crack propagation, thereby preventing oxygen atoms from entering the substrate through the cracks. The oxidation weight gain of the coatings followed a sub-parabolic law, showing excellent oxidation resistance.</div></div>","PeriodicalId":290,"journal":{"name":"Corrosion Science","volume":"248 ","pages":"Article 112808"},"PeriodicalIF":7.4000,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructural characteristics and long-term high-temperature oxidation resistance of Ti-Al-Si composite coating onTi65 alloy prepared by two-step hot-dipping plus pre-oxidation method\",\"authors\":\"Xiaoyuan Hu , Faguo Li , Yu Zhang , Licheng Jia , Houwen Chen , Yongxiong Liu , Yi Yang , Fucheng Yin\",\"doi\":\"10.1016/j.corsci.2025.112808\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The Ti-Al-Si composite coating on Ti65 alloy consists of Ti<sub>3</sub>Al, TiAl, Ti<sub>3</sub>Al<sub>5</sub> + TiAl<sub>2</sub>, Ti(Al, Si)<sub>3</sub>, and Al<sub>2</sub>O<sub>3</sub> prepared by two-step hot-dipping plus pre-oxidation method. The phase structure and elemental distribution of the alloy phase layer were analyzed by XRD, SEM-EDS, HRTEM, and AC-TEM. During prolonged oxidation, many mixed oxides of TiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> formed in the longitudinal thermal cracks, sealing the cracks. Moreover, the Ti<sub>3</sub>Al phase acted as a barrier to crack propagation, thereby preventing oxygen atoms from entering the substrate through the cracks. The oxidation weight gain of the coatings followed a sub-parabolic law, showing excellent oxidation resistance.</div></div>\",\"PeriodicalId\":290,\"journal\":{\"name\":\"Corrosion Science\",\"volume\":\"248 \",\"pages\":\"Article 112808\"},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2025-05-15\",\"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/S0010938X25001350\",\"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/S0010938X25001350","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}
Microstructural characteristics and long-term high-temperature oxidation resistance of Ti-Al-Si composite coating onTi65 alloy prepared by two-step hot-dipping plus pre-oxidation method
The Ti-Al-Si composite coating on Ti65 alloy consists of Ti3Al, TiAl, Ti3Al5 + TiAl2, Ti(Al, Si)3, and Al2O3 prepared by two-step hot-dipping plus pre-oxidation method. The phase structure and elemental distribution of the alloy phase layer were analyzed by XRD, SEM-EDS, HRTEM, and AC-TEM. During prolonged oxidation, many mixed oxides of TiO2 and Al2O3 formed in the longitudinal thermal cracks, sealing the cracks. Moreover, the Ti3Al phase acted as a barrier to crack propagation, thereby preventing oxygen atoms from entering the substrate through the cracks. The oxidation weight gain of the coatings followed a sub-parabolic law, showing excellent oxidation resistance.
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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