Gen Zhang , Guolong Wu , Siyuan Tao , Yongfu Zhao , Xianglong Guo , Ye Wang , Yanping Huang , Zongpei Wu , Zhongyu Piao , Jianhua Yao
{"title":"15CrMo钢激光熔覆Inconel 625 + xAl复合涂层的研制与评价","authors":"Gen Zhang , Guolong Wu , Siyuan Tao , Yongfu Zhao , Xianglong Guo , Ye Wang , Yanping Huang , Zongpei Wu , Zhongyu Piao , Jianhua Yao","doi":"10.1016/j.surfcoat.2025.132444","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigated the development of laser cladding Inconel 625/aluminium composite coatings on 15CrMo steels for enhanced corrosion resistance in high-temperature supercritical carbon dioxide (S-CO<sub>2</sub>) environments. By optimizing laser process parameters and tailoring Al content (0.5–4 wt%), the microstructural evolution, mechanical properties and corrosion behavior were systematically investigated. The obtained results showed that: i) Increasing Al content promoted Laves phase (Fe<sub>2</sub>(Nb,Mo)) precipitation; ii) Enhanced mechanical performance was observed, with a progressive enhancement in microhardness with rising Al content and wear resistance peaking at 4 wt% Al; iii) After 1000 h exposure to 650 °C S-CO<sub>2</sub>, all coating samples maintained their metallic luster and developed a protective Cr<sub>2</sub>O<sub>3</sub>/NiCr<sub>2</sub>O<sub>4</sub> oxide layer (~156 nm thick at 4 wt% Al), where metastable hexagonal Al<sub>2</sub>O<sub>3</sub> and amorphous SiO<sub>2</sub> at the oxide/coating interface synergistically suppress oxygen diffusion.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"512 ","pages":"Article 132444"},"PeriodicalIF":5.3000,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Development and evaluation of laser cladding Inconel 625 + xAl composite coatings on 15CrMo steels for enhanced corrosion resistance in S-CO2 environments\",\"authors\":\"Gen Zhang , Guolong Wu , Siyuan Tao , Yongfu Zhao , Xianglong Guo , Ye Wang , Yanping Huang , Zongpei Wu , Zhongyu Piao , Jianhua Yao\",\"doi\":\"10.1016/j.surfcoat.2025.132444\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigated the development of laser cladding Inconel 625/aluminium composite coatings on 15CrMo steels for enhanced corrosion resistance in high-temperature supercritical carbon dioxide (S-CO<sub>2</sub>) environments. By optimizing laser process parameters and tailoring Al content (0.5–4 wt%), the microstructural evolution, mechanical properties and corrosion behavior were systematically investigated. The obtained results showed that: i) Increasing Al content promoted Laves phase (Fe<sub>2</sub>(Nb,Mo)) precipitation; ii) Enhanced mechanical performance was observed, with a progressive enhancement in microhardness with rising Al content and wear resistance peaking at 4 wt% Al; iii) After 1000 h exposure to 650 °C S-CO<sub>2</sub>, all coating samples maintained their metallic luster and developed a protective Cr<sub>2</sub>O<sub>3</sub>/NiCr<sub>2</sub>O<sub>4</sub> oxide layer (~156 nm thick at 4 wt% Al), where metastable hexagonal Al<sub>2</sub>O<sub>3</sub> and amorphous SiO<sub>2</sub> at the oxide/coating interface synergistically suppress oxygen diffusion.</div></div>\",\"PeriodicalId\":22009,\"journal\":{\"name\":\"Surface & Coatings Technology\",\"volume\":\"512 \",\"pages\":\"Article 132444\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2025-06-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Surface & Coatings Technology\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0257897225007182\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COATINGS & FILMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897225007182","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}
Development and evaluation of laser cladding Inconel 625 + xAl composite coatings on 15CrMo steels for enhanced corrosion resistance in S-CO2 environments
This study investigated the development of laser cladding Inconel 625/aluminium composite coatings on 15CrMo steels for enhanced corrosion resistance in high-temperature supercritical carbon dioxide (S-CO2) environments. By optimizing laser process parameters and tailoring Al content (0.5–4 wt%), the microstructural evolution, mechanical properties and corrosion behavior were systematically investigated. The obtained results showed that: i) Increasing Al content promoted Laves phase (Fe2(Nb,Mo)) precipitation; ii) Enhanced mechanical performance was observed, with a progressive enhancement in microhardness with rising Al content and wear resistance peaking at 4 wt% Al; iii) After 1000 h exposure to 650 °C S-CO2, all coating samples maintained their metallic luster and developed a protective Cr2O3/NiCr2O4 oxide layer (~156 nm thick at 4 wt% Al), where metastable hexagonal Al2O3 and amorphous SiO2 at the oxide/coating interface synergistically suppress oxygen diffusion.
期刊介绍:
Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance:
A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting.
B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.