Deposition and structural analyses of molybdenum-disulfide (MoS2)–amorphous hydrogenated carbon (a-C:H) composite coatings

Takeno, Takanori; Abe, S.; Adachi, K.; Miki, Hiroyuki; Takagi, Toshiyuki

doi:10.1016/j.diamond.2009.10.028

Cited by 32 publications

(12 citation statements)

References 28 publications

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“…Fig. 4(b) demonstrates that nanocrystalline or particulate of MoS 2 are not found in the MoS 2 -C composite coatings, which is different from previous works [20,30]. The corresponding selected area electron diffraction (SAED) shows the board and diffuses halo diffraction, which is the typical amorphous feature.…”

Section: Resultscontrasting

confidence: 52%

Amorphous self-lubricant MoS2-C sputtered coating with high hardness

Zou

et al. 2015

Applied Surface Science

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Section: Resultscontrasting

confidence: 52%

Amorphous self-lubricant MoS2-C sputtered coating with high hardness

Zou

et al. 2015

Applied Surface Science

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“…The average coefficients of friction of the samples decreased with increasing MoS 2 concentration r, and became constant (~0.20) above 5.0 vol.% MoS 2 . The coefficients of friction of the Cu-based MoS 2 -dispersed composite that was formed by sintering were ~0.20 [4,5], and the coefficient of friction of the MoS 2 against itself in air was also 0.20 [21]. From these results, it appears that the Cu/MoS 2 composite material with a 5.0 vol.% or larger amount of MoS 2 as formed by COSME-RT ensures sufficient lubrication of the MoS 2 .…”

Section: Composition and Microstructuressupporting

confidence: 49%

“…The indentation hardness of the r = 0, 1.0, and 5.0 vol.% samples was more than 1.6 GPa, and higher than that of a pure Cu plate (1.0 GPa). The indentation hardness was ~1.5 times higher than that of the Cu-based MoS 2 -dispersed composite that was formed by sintering when converted to a Vickers or Rockwell hardness [4,5]. The indentation hardness of the samples decreased with increasing MoS 2 concentration r, and the amount of host matrix (Cu) that retains the composite structure decreased.…”

Section: Composition and Microstructuresmentioning

confidence: 94%

“…These composites are expected to have the high strength of the metal-host matrix and the low friction coefficient of solid lubricants. Lubricant oxidation will be prevented because the lubricants are packed into a stiff host matrix, which is similar in structure to a MoS 2 -diamond-like carbon composite [5]. In this structure, the metal-based solid lubricantdispersed composite is expected to maintain a low friction coefficient as a result of the lubricants, even when worn.…”

Section: Introductionmentioning

confidence: 99%

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Cu-Based MoS<sub>2</sub>-Dispersed Composite Material Formed by the Compression Shearing Method at Room Temperature

et al. 2017

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Cu/MoS 2 composite material was formed by a novel powder-molding technique, which is termed the compression shearing method at room temperature (COSME-RT). Cu/MoS 2 sample mechanical and tribological properties and microstructures were investigated. Samples were prepared using five different MoS 2 concentrations between 0 to 20 vol.%. No unwanted compounds were generated by the Cu and MoS 2 because a high temperature is unnecessary in COSME-RT. Scanning electron microscopy observations confirmed that the MoS 2 particles were dispersed homogeneously in the Cu host matrix. The indentation hardness of Cu/MoS 2 with 0, 1.0 and 5.0 vol.% MoS 2 was higher than 1.6 GPa, and is higher than that formed by conventional powder metallurgy methods and a pure Cu plate. The indentation hardness of the Cu/MoS 2 decreased with increasing MoS 2 concentration. In contrast, the lubricating performance of MoS 2 became more pronounced at 5.0 vol.% or above. The coefficient of friction of Cu/MoS 2 with 5.0, 10 and 20 vol.% MoS 2 was ~0.20, and is the same as for MoS 2 in air. The sample coefficient of friction was maintained because of lubrication by forming a transferred film of wear debris that contained MoS 2 . Cu/MoS 2 had a low coefficient of friction, but maintained its material strength at 5.0 vol.% MoS 2 .

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“…Hydrogen-free a-CN x films were prepared by the hybrid deposition technique (HDT) proposed previously [27]. Single-crystalline silicon, Si(100), and quartz glass were used as substrate materials.…”

Section: Methodsmentioning

confidence: 99%