Effect of Molybdenum Content on Mechanical and Tribological Properties of Diamond-Like Carbon Coatings over Titanium β-21S Alloy

被引：13

作者：

Padmanaban, Dilli Babu ^{[1
,2
]}

Mohan, Loganathan ^{[1
,3
]}

Giri, Preetam ^{[1
]}

Bera, Parthasarathi ^{[1
]}

Anandan, Chinnasamy ^{[1
]}

Barshilia, Harish C. ^{[1
]}

机构：

[1] Natl Aerosp Labs, CSIR, Surface Engn Div, Bengaluru 560017, India

[2] Ulster Univ Jordanstown, Sch Engn, Belfast BT37 0QB, Antrim, North Ireland

[3] Toyohashi Univ Technol, Dept Mech Engn, Toyohashi, Aichi 4418580, Japan

来源：

C-JOURNAL OF CARBON RESEARCH | 2021年 / 7卷 / 01期

关键词：

diamond-like carbon; molybdenum doping; titanium beta-21S; XPS; Raman spectroscopy; wear; COMPOSITE THIN-FILMS; CORROSION BEHAVIOR; DOPED DLC; SURFACE MODIFICATION; THERMAL-STABILITY; ION-IMPLANTATION; WEAR-RESISTANCE; RAMAN-SPECTRA; CATHODIC ARC; DEPOSITION;

D O I：

10.3390/c7010001

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Molybdenum-doped diamond-like carbon (Mo-DLC) coatings have been deposited on titanium beta-21S alloy (Ti-15Mo-3Nb-3Al-0.2Si) using plasma-enhanced chemical vapor deposition (PECVD) equipped with pulsed-DC magnetron sputtering. Mo contents in the deposited coatings have been controlled with an applied sputtering pulse duty cycle. Chemical composition, structure, morphology, and topography have been studied using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and atomic force microscopy (AFM), respectively. XRD pattern of the coating with highest Mo content shows the presence of carbide phase. Smooth features with low roughness values are observed in low Mo content coating, whereas high Mo content coating shows granular characteristics with a high roughness value. Raman spectra reveal the increased graphitic content for the highest metal concentration in the coatings, wherein the nanohardness is also determined to be highest, at about similar to 18-19 GPa. Furthermore, the ball-on-disk tribometry test on Mo-DLC coating with highest nanohardness shows a low coefficient of friction (COF) of 0.2 with low wear loss compared to that of the substrate (0.62).

引用

页数：20

共 90 条

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