Effect of bottom micro-crystalline diamond (MCD) layer and top nano-crystalline diamond (NCD) layer onto the tribological behavior of (MCD/NCD) bilayer film

Yijie Luo; Li Ma; Liang Li; Yubo Chen; Kechao Zhou; Mingkun Yi; Biao Deng; Haohui Yang; Xin Xia; Tengyu Hua; Dengfeng Yin; Qiuping Wei

doi:10.1088/2053-1591/ab7269

Materials Research Express (Jan 2020)

Effect of bottom micro-crystalline diamond (MCD) layer and top nano-crystalline diamond (NCD) layer onto the tribological behavior of (MCD/NCD) bilayer film

Yijie Luo,
Li Ma,
Liang Li,
Yubo Chen,
Kechao Zhou,
Mingkun Yi,
Biao Deng,
Haohui Yang,
Xin Xia,
Tengyu Hua,
Dengfeng Yin,
Qiuping Wei

Affiliations

Yijie Luo: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Li Ma: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Liang Li: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Yubo Chen: Jiangxi Jiangwu Cemented Carbide Co., Ltd, Jiangxi Jing’an 330699, People’s Republic of China
Kechao Zhou: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Mingkun Yi: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Biao Deng: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Haohui Yang: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Xin Xia: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Tengyu Hua: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Dengfeng Yin: State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China
Qiuping Wei: ORCiD; State Key Laboratory of Powder Metallurgy, School of Materials Science and Engineering, Central South University , Changsha 410083, People’s Republic of China

DOI: https://doi.org/10.1088/2053-1591/ab7269
Journal volume & issue: Vol. 7, no. 2
p. 026412

Abstract

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In this study, a comparative study of a series of (MCD/NCD) bilayer films with different MCD grain sizes and NCD layer thickness deposited on cemented tungsten carbide (WC-Co) flat substrates was conducted by changing the deposition time. Tribological behaviors of these diamond films were evaluated by using a reciprocal tribometer without lubrication. In friction test against Si _3 N _4 balls, the (3hMCD/6hNCD) bilayer film showed the lowest coefficient of friction (0.059) and wear rates of counterpart balls (1.75 × 10 ^−6 mm ^3 N ^−1 m ^−1 ) because of its lowest surface roughness and higher sp ^2 content. This work provides a guide to choose suitable (MCD/NCD) bilayer basic structure in multilayer diamond film for getting a fine diamond film with low roughness and great tribological performance for different applications.

Published in Materials Research Express

ISSN: 2053-1591 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials; Technology: Chemical technology
Website: https://iopscience.iop.org/journal/2053-1591

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