G.O. Neves , F.B. Ibaca , C. Salvo , D.B. Salvaro , C. Binder , C. Aguilar , D. Salinas
{"title":"MAX 相 Ti2SnC 含量对铁基自润滑复合材料微观结构、机械性能和摩擦行为的影响","authors":"G.O. Neves , F.B. Ibaca , C. Salvo , D.B. Salvaro , C. Binder , C. Aguilar , D. Salinas","doi":"10.1016/j.matlet.2024.136880","DOIUrl":null,"url":null,"abstract":"<div><p>This work focuses on developing novel iron-based self-lubricating composites reinforced with Ti<sub>2</sub>SnC MAX phase produced by powder metallurgy. Two amounts of Ti<sub>2</sub>SnC (5 and 10 vol%) and the addition of 10 vol% graphite were evaluated. The microstructure revealed a partial reaction between the matrix and the Ti<sub>2</sub>SnC, exhibiting a degree of dissociation in the presence of graphite, leading to the precipitation of carbides. The addition of the MAX phase significantly improved the hardness and compression strength. The dry coefficient of friction was around 0.12 for Fe + 5Ti<sub>2</sub>SnC + 10Gr, showing a remarkable reduction in wear rate up to 85 % compared to pure iron. The results demonstrate a synergistic effect between the MAX phase and graphite, enhancing tribological performance and wear resistance.</p></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":null,"pages":null},"PeriodicalIF":2.7000,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of MAX phase Ti2SnC content on microstructure, mechanical properties, and friction behavior of iron-based self-lubricating composites\",\"authors\":\"G.O. Neves , F.B. Ibaca , C. Salvo , D.B. Salvaro , C. Binder , C. Aguilar , D. Salinas\",\"doi\":\"10.1016/j.matlet.2024.136880\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This work focuses on developing novel iron-based self-lubricating composites reinforced with Ti<sub>2</sub>SnC MAX phase produced by powder metallurgy. Two amounts of Ti<sub>2</sub>SnC (5 and 10 vol%) and the addition of 10 vol% graphite were evaluated. The microstructure revealed a partial reaction between the matrix and the Ti<sub>2</sub>SnC, exhibiting a degree of dissociation in the presence of graphite, leading to the precipitation of carbides. The addition of the MAX phase significantly improved the hardness and compression strength. The dry coefficient of friction was around 0.12 for Fe + 5Ti<sub>2</sub>SnC + 10Gr, showing a remarkable reduction in wear rate up to 85 % compared to pure iron. The results demonstrate a synergistic effect between the MAX phase and graphite, enhancing tribological performance and wear resistance.</p></div>\",\"PeriodicalId\":384,\"journal\":{\"name\":\"Materials Letters\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2024-06-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167577X2401019X\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X2401019X","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
这项工作的重点是开发新型铁基自润滑复合材料,该复合材料使用粉末冶金法生产的 Ti2SnC MAX 相进行增强。研究评估了 Ti2SnC 的两种用量(5% 和 10%)以及石墨添加量(10%)。微观结构显示,基体和 Ti2SnC 之间发生了部分反应,在石墨存在的情况下表现出一定程度的解离,导致碳化物沉淀。MAX 相的加入大大提高了硬度和压缩强度。Fe + 5Ti2SnC + 10Gr 的干摩擦系数约为 0.12,与纯铁相比,磨损率显著降低了 85%。结果表明 MAX 相和石墨之间存在协同效应,可提高摩擦学性能和耐磨性。
Effect of MAX phase Ti2SnC content on microstructure, mechanical properties, and friction behavior of iron-based self-lubricating composites
This work focuses on developing novel iron-based self-lubricating composites reinforced with Ti2SnC MAX phase produced by powder metallurgy. Two amounts of Ti2SnC (5 and 10 vol%) and the addition of 10 vol% graphite were evaluated. The microstructure revealed a partial reaction between the matrix and the Ti2SnC, exhibiting a degree of dissociation in the presence of graphite, leading to the precipitation of carbides. The addition of the MAX phase significantly improved the hardness and compression strength. The dry coefficient of friction was around 0.12 for Fe + 5Ti2SnC + 10Gr, showing a remarkable reduction in wear rate up to 85 % compared to pure iron. The results demonstrate a synergistic effect between the MAX phase and graphite, enhancing tribological performance and wear resistance.
期刊介绍:
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive