{"title":"利用低能量大电流电子束在 Ni3Al 上形成的 Ni3Al - TiC 表面复合材料的微观结构和性能","authors":"","doi":"10.1016/j.vacuum.2024.113606","DOIUrl":null,"url":null,"abstract":"<div><p>Using scanning and transmission electron microscopy, X-ray diffraction, profilometry, indentation and friction tests we investigated the microstructure and phase composition formation in the near-surface layer, microhardness, surface roughness, resistance to cracking and wear resistance in Ni<sub>3</sub>Al intermetallic compound and “Ni<sub>3</sub>Al base – thin powder TiC coating” system processed with low-energy high-current electron beam (LEHCEB). We revealed the crucial role of TiC particles in different behavior of these materials under LEHCEB irradiation with the surface energy density of 8 J/cm<sup>2</sup>, accelerating voltage of 30 kV and 10 pulses. The mass fraction of TiC in the near-surface was as much as 22 wt % after three times surfacing. It was found that the presence of TiC thin layer enabled essential microstructure and phase refinement in the near-surface layer of the surface composites and improvement in microhardness and wear resistance. The density of surface cracks in the surface composites is 1.8 lower with respect to TiC-free Ni<sub>3</sub>Al and the roughness keeps the same. The advantages of LEHCEB processing of intermetallic compounds with thin powder layers are attractive for possible practical application.</p></div>","PeriodicalId":23559,"journal":{"name":"Vacuum","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructure and properties of Ni3Al – TiC surface composites formed on Ni3Al using low-energy high-current electron beam\",\"authors\":\"\",\"doi\":\"10.1016/j.vacuum.2024.113606\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Using scanning and transmission electron microscopy, X-ray diffraction, profilometry, indentation and friction tests we investigated the microstructure and phase composition formation in the near-surface layer, microhardness, surface roughness, resistance to cracking and wear resistance in Ni<sub>3</sub>Al intermetallic compound and “Ni<sub>3</sub>Al base – thin powder TiC coating” system processed with low-energy high-current electron beam (LEHCEB). We revealed the crucial role of TiC particles in different behavior of these materials under LEHCEB irradiation with the surface energy density of 8 J/cm<sup>2</sup>, accelerating voltage of 30 kV and 10 pulses. The mass fraction of TiC in the near-surface was as much as 22 wt % after three times surfacing. It was found that the presence of TiC thin layer enabled essential microstructure and phase refinement in the near-surface layer of the surface composites and improvement in microhardness and wear resistance. The density of surface cracks in the surface composites is 1.8 lower with respect to TiC-free Ni<sub>3</sub>Al and the roughness keeps the same. The advantages of LEHCEB processing of intermetallic compounds with thin powder layers are attractive for possible practical application.</p></div>\",\"PeriodicalId\":23559,\"journal\":{\"name\":\"Vacuum\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.8000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Vacuum\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0042207X24006523\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Vacuum","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0042207X24006523","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Microstructure and properties of Ni3Al – TiC surface composites formed on Ni3Al using low-energy high-current electron beam
Using scanning and transmission electron microscopy, X-ray diffraction, profilometry, indentation and friction tests we investigated the microstructure and phase composition formation in the near-surface layer, microhardness, surface roughness, resistance to cracking and wear resistance in Ni3Al intermetallic compound and “Ni3Al base – thin powder TiC coating” system processed with low-energy high-current electron beam (LEHCEB). We revealed the crucial role of TiC particles in different behavior of these materials under LEHCEB irradiation with the surface energy density of 8 J/cm2, accelerating voltage of 30 kV and 10 pulses. The mass fraction of TiC in the near-surface was as much as 22 wt % after three times surfacing. It was found that the presence of TiC thin layer enabled essential microstructure and phase refinement in the near-surface layer of the surface composites and improvement in microhardness and wear resistance. The density of surface cracks in the surface composites is 1.8 lower with respect to TiC-free Ni3Al and the roughness keeps the same. The advantages of LEHCEB processing of intermetallic compounds with thin powder layers are attractive for possible practical application.
期刊介绍:
Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences.
A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below.
The scope of the journal includes:
1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes).
2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis.
3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification.
4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.