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Effect of the interfacial microstructure on hardness of multi-layer diamond coatings

文献类型：期刊论文

作者Liu, Yanming2; Wang, Mengrui2,3; Liu, Lusheng3; Song, Haozhe3; Hu, Tianwen3; Xiong, Jiaji1,3; Zhai, Zhaofeng3; Zhao, Xiao2,3; Zhang, Chuyan3; Yang, Bing3
刊名SURFACE & COATINGS TECHNOLOGY
出版日期2023-07-15
卷号464页码:10
关键词Multi -layer diamond coatings Interfaces Microstructure Modulation periods Nanoindentation
ISSN号0257-8972
DOI10.1016/j.surfcoat.2023.129541
通讯作者Jiang, Xin(xjiang@imr.ac.cn) ; Huang, Nan(nhuang@imr.ac.cn)
英文摘要Multi-layer diamond coatings have been widely employed in cutting tools due to their superior mechanical performance, which mainly stems from their complex multi-layer structures and versatile interfaces. However, it is still lack of investigation on how these interfaces may be tuned to enhance the mechanical properties. Herein, the multi-layer diamond coatings with different modulation periods (lambda = 1.70, 0.87, 0.29 mu m), containing microcrystalline diamond (MCD), sub-microcrystalline diamond (SMCD) and nanocrystalline diamond (NCD) as sub-layers, were synthetized by hot filament chemical vapor deposition (HFCVD). The interfacial microstructures were characterized by scanning transmission electron microscopy (STEM). The hardness (H) and Young's modulus (E) of the coatings were evaluated by nanoindentation tests with two different modes. The planar defects including stacking faults (SFs) and twinning boundaries (TBs) are observed at both MCD/SMCD and NCD/MCD interfaces but absent at SMCD/NCD interfaces. Owing to more interfaces, SFs and TBs as barriers inhibiting the dislocation motion effectively, the H and E of the coatings are enhanced with the decrease of lambda. Hence, the coating with lambda of 0.29 mu m, possessing more SFs, TBs and more sharp interfaces, obtains the highest hardness (78.39 +/- 1.10 GPa). In summary, the mechanical properties of the multi-layer diamond coatings can be greatly improved by the elaborately designed interfacial microstructure, which is of great significance to promote the far-ranging application of diamond coatings.
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04000000] ; STS project of the Fujian Province and Chinese Academy of Sciences[2020T3001] ; Natural Science Foundation of Shaanxi Province of China[2022JM-261] ; Graduate Student Innovation and Practical Ability Training Program of Xi'an Shiyou University[YCS21111017]
WOS研究方向Materials Science ; Physics
语种英语
WOS记录号WOS:001004014000001
出版者ELSEVIER SCIENCE SA
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; STS project of the Fujian Province and Chinese Academy of Sciences ; Natural Science Foundation of Shaanxi Province of China ; Graduate Student Innovation and Practical Ability Training Program of Xi'an Shiyou University
源URL[http://ir.imr.ac.cn/handle/321006/178189]  
专题金属研究所_中国科学院金属研究所
通讯作者Jiang, Xin; Huang, Nan
作者单位1.Univ Sci & Technol China, Sch Mat Sci & Engn, Wenhua Rd 72, Shenyang 110016, Peoples R China
2.Xian Shiyou Univ, Coll Mat Sci & Engn, Xian 710065, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Yanming,Wang, Mengrui,Liu, Lusheng,et al. Effect of the interfacial microstructure on hardness of multi-layer diamond coatings[J]. SURFACE & COATINGS TECHNOLOGY,2023,464:10.
APA Liu, Yanming.,Wang, Mengrui.,Liu, Lusheng.,Song, Haozhe.,Hu, Tianwen.,...&Huang, Nan.(2023).Effect of the interfacial microstructure on hardness of multi-layer diamond coatings.SURFACE & COATINGS TECHNOLOGY,464,10.
MLA Liu, Yanming,et al."Effect of the interfacial microstructure on hardness of multi-layer diamond coatings".SURFACE & COATINGS TECHNOLOGY 464(2023):10.

入库方式： OAI收割

来源：金属研究所

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