Effects of Deposition Temperature on Structural and Properties of NiCrAlY/Ag Composite Films

WU Yi-qian, WEI Chun-bei, DAI Ming-jiang, KUANG Tong-chun, LIU Min, LIN Song-sheng, SHI Qian

Surface Technology ›› 2019, Vol. 48 ›› Issue (12) : 211-217.

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Surface Technology ›› 2019, Vol. 48 ›› Issue (12) : 211-217. DOI: 10.16490/j.cnki.issn.1001-3660.2019.12.025
Surface Friction Wear and Lubrication

Effects of Deposition Temperature on Structural and Properties of NiCrAlY/Ag Composite Films

  • WU Yi-qian1, WEI Chun-bei2, DAI Ming-jiang2, LIU Min2, LIN Song-sheng2, SHI Qian2, KUANG Tong-chun3
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Abstract

The work aims to prepare a composite film with good tribological properties to improve the surface properties of GH4169 alloy. NiCrAlY/Ag composite films was prepared by ion source assisted DC magnetron sputtering at 60 ℃, 120 ℃, and 180 ℃. Effects of deposition temperature on the structure and properties of films were investigated. The elemental composition, surface morphologies, cross-sectional morphologies, surface roughness, and phase structure of the films were analyzed with energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray diffraction (XRD). The hardness, adhesion strength, friction and wear properties of the films were analyzed with nanoindentation tester, scratch test and ball-on-disk friction and wear tester. With the increase of deposition temperature, the surface density, grain size and surface roughness of NiCrAlY/Ag composite films increased, phase structures of the films were mainly Ni3Al, Ag and Cr. The hardness of the films was slightly different at the range of 5.67~6.41 GPa. With the increase of deposition temperature, the adhesion strength of the composite films decreased. The samples deposited at 60 ℃ showed the best adhesion strength of 33.1 N, as well as good tribological properties with friction coefficient of 0.24 and wear rate of 3.52×10–5 mm3/(N?m). The wear mechanism was oxidative wear and abrasive wear. Thus the deposition temperature has a significant effect on the structural and properties of NiCrAlY/Ag composite films. The films deposited at 60 ℃ shows the best comprehensive performance.

Key words

magnetron sputtering; NiCrAlY/Ag composite films; deposition temperature; friction coefficient; wear mechanism

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WU Yi-qian, WEI Chun-bei, DAI Ming-jiang, KUANG Tong-chun, LIU Min, LIN Song-sheng, SHI Qian. Effects of Deposition Temperature on Structural and Properties of NiCrAlY/Ag Composite Films[J]. Surface Technology. 2019, 48(12): 211-217

Funding

Supported by AECC Innovation Fund Project (ZGHF-ZL-2017-C068), Guangdong Academy of Sciences Projects (2018GDASCX-0111, 2019GDASYL-0302012, 2017GDASCX-0111); Guangdong Science and Technology Program (2017A070701027, 2014B070705007)
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