{"title":"Effect of heat treatment on wear resistance of cold-sprayed Ti-diamond composite coating","authors":"","doi":"10.1016/j.ijrmhm.2024.106924","DOIUrl":null,"url":null,"abstract":"<div><div>In order to enhance the wear resistance of cold-sprayed Ti coatings, Ti-diamond (Ti-MD) composite coatings were fabricated, followed by heat treatment at different temperatures. The effects of heat treatment temperature on the wear resistance of the composite coatings were assessed using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), microhardness testing, and wear resistance experiments. The results show that the composite coating undergo no phase transformation after heat treatment, and exhibits higher microhardness and improved wear resistance. The porosity results showed that the porosity of the coating decreased as the heat treatment temperature increases. TEM results showed that stable TiC (about 10 nm) was formed at the interface between the titanium and diamond particles after heat treatment at 800 °C, and nanoindentation results showed that the heat-treated coating had higher deformation resistance. Specifically, when the heat-treated temperature rose to 800 °C, the composite coating exhibits an 80 % reduction in wear rate, primarily attributable to the decreased porosity of the coating and the enhanced adhesion between Ti and diamond particles. The wear mechanisms of the heat-treated coatings are predominantly reduced oxidative and abrasive wear.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":null,"pages":null},"PeriodicalIF":4.2000,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Refractory Metals & Hard Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S026343682400372X","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}
引用次数: 0
Abstract
In order to enhance the wear resistance of cold-sprayed Ti coatings, Ti-diamond (Ti-MD) composite coatings were fabricated, followed by heat treatment at different temperatures. The effects of heat treatment temperature on the wear resistance of the composite coatings were assessed using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), microhardness testing, and wear resistance experiments. The results show that the composite coating undergo no phase transformation after heat treatment, and exhibits higher microhardness and improved wear resistance. The porosity results showed that the porosity of the coating decreased as the heat treatment temperature increases. TEM results showed that stable TiC (about 10 nm) was formed at the interface between the titanium and diamond particles after heat treatment at 800 °C, and nanoindentation results showed that the heat-treated coating had higher deformation resistance. Specifically, when the heat-treated temperature rose to 800 °C, the composite coating exhibits an 80 % reduction in wear rate, primarily attributable to the decreased porosity of the coating and the enhanced adhesion between Ti and diamond particles. The wear mechanisms of the heat-treated coatings are predominantly reduced oxidative and abrasive wear.
期刊介绍:
The International Journal of Refractory Metals and Hard Materials (IJRMHM) publishes original research articles concerned with all aspects of refractory metals and hard materials. Refractory metals are defined as metals with melting points higher than 1800 °C. These are tungsten, molybdenum, chromium, tantalum, niobium, hafnium, and rhenium, as well as many compounds and alloys based thereupon. Hard materials that are included in the scope of this journal are defined as materials with hardness values higher than 1000 kg/mm2, primarily intended for applications as manufacturing tools or wear resistant components in mechanical systems. Thus they encompass carbides, nitrides and borides of metals, and related compounds. A special focus of this journal is put on the family of hardmetals, which is also known as cemented tungsten carbide, and cermets which are based on titanium carbide and carbonitrides with or without a metal binder. Ceramics and superhard materials including diamond and cubic boron nitride may also be accepted provided the subject material is presented as hard materials as defined above.