{"title":"Growth of a hard, novel CVD multilayer coating: Ti(C,N) on (Ti,Al)N on TiN","authors":"Mohamed Ben Hassine , Hans-Olof Andrén , Anand H.S. Iyer , Olof Bäcke , Dirk Stiens , Wiebke Janssen , Johannes Kümmel , Mats Halvarsson","doi":"10.1016/j.ijrmhm.2024.106966","DOIUrl":null,"url":null,"abstract":"<div><div>A novel chemical vapor deposition (CVD) multilayer coating intended for cutting applications was designed to achieve high wear and heat resistance during metal machining. The coating consists of three layers: a TiCN layer deposited on top of a TiAlN layer, which was grown on a layer of TiN that was deposited onto a cemented carbide substrate. The detailed microstructure of the coating was examined using a combination of electron microscope techniques. Two pyramidal surface morphologies and textures were observed, which could be related to the substrate roughness. Two growth modes were found: epitaxial growth of 〈211〉 oriented TiCN on <211> oriented TiAlN on <211> oriented TiN, leading to tilted TiCN pyramids at the coating surface; and epitaxial growth of 〈111〉 TiCN on <111> TiAlN on <111> TiN, leading to symmetrical TiCN pyramids at the coating surface.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"127 ","pages":"Article 106966"},"PeriodicalIF":4.2000,"publicationDate":"2024-11-17","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/S0263436824004141","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
A novel chemical vapor deposition (CVD) multilayer coating intended for cutting applications was designed to achieve high wear and heat resistance during metal machining. The coating consists of three layers: a TiCN layer deposited on top of a TiAlN layer, which was grown on a layer of TiN that was deposited onto a cemented carbide substrate. The detailed microstructure of the coating was examined using a combination of electron microscope techniques. Two pyramidal surface morphologies and textures were observed, which could be related to the substrate roughness. Two growth modes were found: epitaxial growth of 〈211〉 oriented TiCN on <211> oriented TiAlN on <211> oriented TiN, leading to tilted TiCN pyramids at the coating surface; and epitaxial growth of 〈111〉 TiCN on <111> TiAlN on <111> TiN, leading to symmetrical TiCN pyramids at the coating surface.
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.
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