Application of Cr-X-N Thin Film to Improve the Tribological Properties of Environment Friendly Hydraulic Components

2007 ◽  
pp. 657-660
Author(s):  
Sang Yul Lee ◽  
Jung Teack Kim ◽  
Bo Young Lee ◽  
Yeh Sun Hong ◽  
Eun Young Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Tribological Properties ◽  
Environment Friendly

Tribological Properties and Worn Surface Analysis Generated by Sulfur- and Phosphorus-Free Molybdenum-Containing Water-Based Lubricant

2012 ◽  
Vol 591-593 ◽  
pp. 1054-1057 ◽  
Author(s):  
Li Li Yan ◽  
Cheng Biao Wang ◽  
Wen Yue ◽  
Bo Xu
Keyword(s):  
Tribological Properties ◽  
Photoelectron Spectroscopy ◽  
Environmental Concern ◽  
Nitrogen Compound ◽  
Water Soluble ◽  
Environment Friendly ◽  
Water Based ◽  
Modern Manufacturing ◽  
Worn Surface ◽  
Reducing Properties

The development of environment-friendly water-based lubricants has been paid more and more attention in modern manufacturing due to environmental concern and human health. In this paper, several water-soluble molybdenum-containing additives (WMCAs) were synthesized, and characterized by Fourier transform infrared (FTIR), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The tribological properties of WMCAs in water were evaluated by a four-ball tester. The results indicated that WMCAs exhibited beneficial effect on the anti-wear and friction-reducing properties of water under all tested concentrations, which could be attributed to organic nitrogen compound, iron oxides and MoO3 in WMCAs tribofilm.

scholarly journals J212016 HIPIMS Deposition of TiAlN Thin Film and Its Tribological Properties

2013 ◽  
Vol 2013 (0) ◽  
pp. _J212016-1-_J212016-4
Author(s):  
Tetsuhide SHIMIZU ◽  
Hidetoshi KOMIYA ◽  
Tomotaro WATANABE ◽  
Yoshikazu TERANISHI ◽  
Hiroshi NAGASAKA ◽  
...  
Keyword(s):  
Thin Film ◽  
Tribological Properties

scholarly journals A review on the mechanical properties for thin film and block structure characterised by using nanoscratch test

2019 ◽  
Vol 8 (1) ◽  
pp. 628-644
Author(s):  
Xianfeng Wang ◽  
Ping Xu ◽  
Rui Han ◽  
Jun Ren ◽  
Longyuan Li ◽  
...  
Keyword(s):  
Thin Film ◽  
Mechanical Properties ◽  
Polymer Composite ◽  
Tribological Properties ◽  
Block Structure ◽  
Mode Selection ◽  
Deep Understanding ◽  
Single Layer ◽  
Adhesion Properties ◽  
Mechanical And Tribological Properties

AbstractThe nanoscratch test has been identified as one of the important tools for evaluating the mechanical and tribological properties of materials. This paper reviews the current researches on the nanoscratch test using to characterise the mechanical properties of three typical materials, including thin film, polymer composite and concrete, from the perspectives of the Berkovich indenter, parameter selection, mode selection, and analysis of resulting data. In addition, to provide a deep understanding on the test from different magnitude, a comparison between the microscratch test and nanoscratch test on the evaluation of tribological performance is also provided in this paper. The characterisation by nanoscratch test of two structural samples, in terms of layered film structures (thin film and coating sample) and single layer block structure (polymer composite sample and concrete samples) are also described in this paper, which aims to provides a deep understand on the evaluation the adhesion, tribological and interfacial properties of the typical materials samples by nanoscratch test. Finally, the coefficient of friction and critical load are discussed, which are two important parameters in tribological properties and adhesion properties.

scholarly journals Specific Features of Reactive Pulsed Laser Deposition of Solid Lubricating Nanocomposite Mo–S–C–H Thin-Film Coatings

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2456
Author(s):  
Vyacheslav Fominski ◽  
Dmitry Fominski ◽  
Roman Romanov ◽  
Mariya Gritskevich ◽  
Maxim Demin ◽  
...  
Keyword(s):  
Thin Film ◽  
Pulsed Laser Deposition ◽  
Tribological Properties ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Nanocomposite Coatings ◽  
Film Coatings ◽  
Thin Film Coatings ◽  
Chemical States ◽  
Reactive Gas

This work investigates the structure and chemical states of thin-film coatings obtained by pulsed laser codeposition of Mo and C in a reactive gas (H2S). The coatings were analysed for their prospective use as solid lubricating coatings for friction units operating in extreme conditions. Pulsed laser ablation of molybdenum and graphite targets was accompanied by the effective interaction of the deposited Mo and C layers with the reactive gas and the chemical states of Mo- and C-containing nanophases were interdependent. This had a negative effect on the tribological properties of Mo–S–C–H nanocomposite coatings obtained at H2S pressures of 9 and 18 Pa, which were optimal for obtaining MoS2 and MoS3 coatings, respectively. The best tribological properties were found for the Mo–S–C–H_5.5 coating formed at an H2S pressure of 5.5 Pa. At this pressure, the x = S/Mo ratio in the MoSx nanophase was slightly less than 2, and the a-C(S,H) nanophase contained ~8 at.% S and ~16 at.% H. The a-C(S,H) nanophase with this composition provided a low coefficient of friction (~0.03) at low ambient humidity and 22 °C. The nanophase composition in Mo–S–C–H_5.5 coating demonstrated fairly good antifriction properties and increased wear resistance even at −100 °C. For wet friction conditions, Mo–S–C–H nanocomposite coatings did not have significant advantages in reducing friction compared to the MoS2 and MoS3 coatings formed by reactive pulsed laser deposition.

scholarly journals The Evaluation of Physicomechanical and Tribological Properties of Corn Straw Fibre Reinforced Environment-Friendly Friction Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Zhen-yu Wang ◽  
Jie Wang ◽  
Yun-hai Ma
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Corn Stalk ◽  
Wear Properties ◽  
Environment Friendly ◽  
Mechanical And Tribological Properties ◽  
Friction Tester ◽  
Mechanical And Physical Properties ◽  
Friction And Wear Properties ◽  
Worn Surface

Corn stalk fibre reinforced nonasbestos environment-friendly friction composite materials have been fabricated, and their physical, mechanical, and tribological properties are characterized. The tribological properties of the friction composites were evaluated following GB5763-2008 norms on a constant-speed-type friction tester. The experimental outcome reveals that the content of corn stalk fibre has a noteworthy impact on the tribological, mechanical, and physical properties of the friction composites. Specifically, the friction composite with a content of 7% exhibited excellent friction and wear properties. The worn surface morphology of friction composites was further investigated using a scanning electron microscope. It was found that the corn stalk fibre content greatly affected the tribological properties of the friction composites.

Raman and resistivity investigations of carbon overcoats of thin‐film media: Correlations with tribological properties

1991 ◽  
Vol 69 (8) ◽  
pp. 5748-5750 ◽  
Author(s):  
B. Marchon ◽  
N. Heiman ◽  
M. R. Khan ◽  
A. Lautie ◽  
J. W. Ager ◽  
...  
Keyword(s):  
Thin Film ◽  
Tribological Properties ◽  
Carbon Overcoats

scholarly journals Tribological Behavior of Very Thin Confined Films

2000 ◽  
Vol 651 ◽  
Author(s):  
M. H. Müser
Keyword(s):  
Thin Film ◽  
Thermal Diffusion ◽  
Tribological Properties ◽  
Tribological Behavior ◽  
Static Friction ◽  
Generic Model ◽  
Stick Slip ◽  
Normal Contact ◽  
Flat Surfaces ◽  
Contact Pressures

AbstractThe tribological properties of two smooth surfaces in the presence of a thin confined film are investigated with a generic model for the interaction between two surfaces and with computer sim- ulations. It is shown that at large normal contact pressures, an ultra thin film automatically leads to static friction between two flat surfaces - even if the surfaces are incommensurate. Commen- surability is nevertheless the key quantity to understand the tribological behavior of the contact. Qualitative differences between commensurate and incommensurate contacts remain even in the presence of a thin film. The differences mainly concern the thermal diffusion of the contact and the transition between smooth sliding and stick-slip.

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