Yitao Weng , Rong Wang , Xinmeng Sui , Zhenfei Song , Kai Wang , Zhenzhao Mo , Fengtao Yang , Xiangbiao Huang , Xulong Ren
{"title":"研究通过扫描电子束改性的 TiAl/WC 涂层的微观结构和高温耐磨性","authors":"Yitao Weng , Rong Wang , Xinmeng Sui , Zhenfei Song , Kai Wang , Zhenzhao Mo , Fengtao Yang , Xiangbiao Huang , Xulong Ren","doi":"10.1016/j.surfcoat.2024.131479","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, TiAl/WC cladding coatings were modified to improve high-temperature wear resistance by scanning electron beam treatment. Results of the microstructure reveal that the modified coatings are composed of an α<sub>2</sub>-Ti<sub>3</sub>Al matrix, with a high density of TiC reinforced phase and Ti<sub>3</sub>AlC<sub>2</sub> MAX phase. At a scanning speed of 6 mm/s, TiAl/WC coating exhibits superior microhardness and high-temperature wear resistance. After the wear test at 800 °C, the minimum wear volume of modified TiAl/WC coating is 0.084 mm<sup>3</sup>, which is 4.47 times smaller than that of the TC21 substrate. It is mainly attributed to the dense and uniform distribution of hard TiC with a rigid supporting role and Ti<sub>3</sub>AlC<sub>2</sub> MAX phases with a self-lubricating effect. Furthermore, due to the effect of frictional heat, the decomposition of Ti<sub>3</sub>AlC<sub>2</sub> promoted the formation of a dense Al<sub>2</sub>O<sub>3</sub> protective film. The wear mechanism of modified TiAl/WC coatings exhibits a synergistic occurrence of slight adhesive wear, abrasive wear, and oxidative wear. Scanning electron beam technology shows significant potential for extending the service life of the coatings in high-temperature environments.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigating the microstructure and high-temperature wear resistance of TiAl/WC coating modified via scanning electron beam\",\"authors\":\"Yitao Weng , Rong Wang , Xinmeng Sui , Zhenfei Song , Kai Wang , Zhenzhao Mo , Fengtao Yang , Xiangbiao Huang , Xulong Ren\",\"doi\":\"10.1016/j.surfcoat.2024.131479\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>In this study, TiAl/WC cladding coatings were modified to improve high-temperature wear resistance by scanning electron beam treatment. Results of the microstructure reveal that the modified coatings are composed of an α<sub>2</sub>-Ti<sub>3</sub>Al matrix, with a high density of TiC reinforced phase and Ti<sub>3</sub>AlC<sub>2</sub> MAX phase. At a scanning speed of 6 mm/s, TiAl/WC coating exhibits superior microhardness and high-temperature wear resistance. After the wear test at 800 °C, the minimum wear volume of modified TiAl/WC coating is 0.084 mm<sup>3</sup>, which is 4.47 times smaller than that of the TC21 substrate. It is mainly attributed to the dense and uniform distribution of hard TiC with a rigid supporting role and Ti<sub>3</sub>AlC<sub>2</sub> MAX phases with a self-lubricating effect. Furthermore, due to the effect of frictional heat, the decomposition of Ti<sub>3</sub>AlC<sub>2</sub> promoted the formation of a dense Al<sub>2</sub>O<sub>3</sub> protective film. The wear mechanism of modified TiAl/WC coatings exhibits a synergistic occurrence of slight adhesive wear, abrasive wear, and oxidative wear. Scanning electron beam technology shows significant potential for extending the service life of the coatings in high-temperature environments.</div></div>\",\"PeriodicalId\":22009,\"journal\":{\"name\":\"Surface & Coatings Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-10-30\",\"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/S0257897224011101\",\"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/S0257897224011101","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}
Investigating the microstructure and high-temperature wear resistance of TiAl/WC coating modified via scanning electron beam
In this study, TiAl/WC cladding coatings were modified to improve high-temperature wear resistance by scanning electron beam treatment. Results of the microstructure reveal that the modified coatings are composed of an α2-Ti3Al matrix, with a high density of TiC reinforced phase and Ti3AlC2 MAX phase. At a scanning speed of 6 mm/s, TiAl/WC coating exhibits superior microhardness and high-temperature wear resistance. After the wear test at 800 °C, the minimum wear volume of modified TiAl/WC coating is 0.084 mm3, which is 4.47 times smaller than that of the TC21 substrate. It is mainly attributed to the dense and uniform distribution of hard TiC with a rigid supporting role and Ti3AlC2 MAX phases with a self-lubricating effect. Furthermore, due to the effect of frictional heat, the decomposition of Ti3AlC2 promoted the formation of a dense Al2O3 protective film. The wear mechanism of modified TiAl/WC coatings exhibits a synergistic occurrence of slight adhesive wear, abrasive wear, and oxidative wear. Scanning electron beam technology shows significant potential for extending the service life of the coatings in high-temperature environments.
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.