Dry-Sliding Tribological Properties of Bronze–Graphite Composites

2012 ◽  
Vol 48 (2) ◽  
pp. 111-122 ◽  
Author(s):  
Gongjun Cui ◽  
Muye Niu ◽  
Shengyu Zhu ◽  
Jun Yang ◽  
Qinling Bi
Keyword(s):  
Tribological Properties ◽  
Dry Sliding ◽  
Graphite Composites

In-situ fabricated bulk metallic glass/graphite composites with a 3D lubricating layer: Tribological properties under dry sliding and in seawater

2020 ◽  
Vol 148 ◽  
pp. 106301 ◽  
Author(s):  
Xiaofang Jiang ◽  
Junjie Song ◽  
Shuna Chen ◽  
Yunfeng Su ◽  
Hengzhong Fan ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Tribological Properties ◽  
Dry Sliding ◽  
Lubricating Layer ◽  
Graphite Composites

Deposition and Tribological Properties of CVD Diamond/Diamond-Like Carbon Composite Films

2012 ◽  
Vol 565 ◽  
pp. 615-620
Author(s):  
Bin Shen ◽  
Liang Wang ◽  
Su Lin Chen ◽  
Fang Hong Sun
Keyword(s):  
Surface Morphology ◽  
Composite Film ◽  
Tribological Properties ◽  
Composite Films ◽  
Cvd Diamond ◽  
Carbon Composite ◽  
Dry Sliding ◽  
Diamond Like Carbon ◽  
Dlc Film ◽  
Bonding State

The CVD diamond/diamond-like carbon composite film is fabricated on the WC-Co substrate by depositing a layer of Diamond-like Carbon film on the surface of conventional Micro- or Nano-crystalline diamond film. The hot filament chemical vapor deposition (HFCVD) method and vacuum arc discharge with a graphite cathode are adopted respectively to deposit the MCD/NCD and DLC films. A variety of characterization techniques, including filed emission scanning electron microscope (FE-SEM) and Raman spectroscopy are employed to investigate the surface morphology and atomic bonding state of as-deposited MCD/DLC and NCD/DLC composite film. The results show that both MCD/DLC and NCD/DLC composite films present similar surface morphology with the MCD and NCD films, except for scattering a considerable amount of small-sized diamond crystallites among the grain boundary area. The atomic-bonding state of as-deposited MCD/DLC and NCD/DLC composite films is determined by the top-layered DLC film, which is mainly consisted of amorphous carbon phase and no discernible sp3 characteristic peak can be observed from their Raman spectrum. Furthermore, the tribological properties of as-deposited MCD/DLC and NCD/DLC composite films is examined using a ball-on-plate reciprocating friction tester under both dry sliding and water-lubricating conditions, comparing with conventional DLC, MCD and NCD films. Silicon nitride balls are used as counterpart materials. For the CVD diamond/DLC composite films, the self-lubricating effect of top-layered DLC film is beneficial for suppressing the initial friction peak, as well as shortening the run-in period. The average friction coefficients of MCD/DLC and NCD/DLC composite films during stable sliding period are 0.07 and 0.10 respectively in dry sliding; while under water-lubricating condition, they further decreases to 0.03 and 0.07.

Dry-Sliding Tribological Properties of TiAl/Ti2AlC Composites

2013 ◽  
Vol 53 (2) ◽  
pp. 457-467 ◽  
Author(s):  
Jun Cheng ◽  
Fei Li ◽  
Licai Fu ◽  
Zhuhui Qiao ◽  
Jun Yang ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Dry Sliding

Tribological properties of lead-free Cu–FeS composites under dry sliding condition

2016 ◽  
Vol 32 (2) ◽  
pp. 354-362 ◽  
Author(s):  
Guotao Zhang ◽  
Yanguo Yin ◽  
Jining Li
Keyword(s):  
Tribological Properties ◽  
Lead Free ◽  
Dry Sliding ◽  
Image Position

Abstract

Effect of Sliding Speed on Tribological Properties of Microwave Sintered Copper-Graphite Composites

2014 ◽  
Vol 592-594 ◽  
pp. 1305-1309 ◽  
Author(s):  
K. Rajkumar ◽  
S. Aravindan
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Dry Sliding ◽  
Graphite Layer ◽  
Sliding Speed ◽  
Graphite Content ◽  
Sintered Copper ◽  
Pin On Disc ◽  
Graphite Composites ◽  
Scanning Electron

Effects of graphite content, and sliding speed on the tribological characteristics of copper-graphite composites under dry sliding condition were evaluated using a pin-on-disc tribometer. The worn surfaces of the composites were analyzed through Scanning Electron Microscopy (SEM). The experimental results revealed the improvement in wear resistance with increasing graphite content. The friction coefficient is also gradually decreasing upto 25 vol% graphite. Sliding speed has an effect on copper (5-15 vol%) graphite composites where as sliding speed has no effect in copper-(20-30 vol%) graphite composites. This difference is attributed to availability of self-lubricating graphite layer at the contact zone.

Dry sliding tribological properties of PI/UHMWPE blends for high speed application

2020 ◽  
Vol 146 ◽  
pp. 106262 ◽  
Author(s):  
Song Chen ◽  
Lei Wei ◽  
Bingxue Cheng ◽  
Yongliang Jin ◽  
Chao Li ◽  
...  
Keyword(s):  
Tribological Properties ◽  
High Speed ◽  
Dry Sliding

Tribological Properties of Hot-Pressed SrSO4 Ceramic at Elevated Temperatures in Dry Sliding Against Alumina Ball

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
Chong-Chong Mao ◽  
Yu-Feng Li
Keyword(s):  
Tribological Properties ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Testing Temperature ◽  
Dry Sliding ◽  
Potential Candidate ◽  
Friction Behavior ◽  
Wear Rates ◽  
Brittle To Ductile Transition ◽  
Lubricating Film

SrSO4 ceramic was prepared by hot-pressed sintering and its friction behavior was investigated against the Al2O3 ball under the dry sliding condition from room temperature to 800 °C. From room temperature to 400 °C, the tribological properties of SrSO4 ceramic are quite poor with the friction coefficients of 0.65–0.83 and the wear rates of about 10−3 mm3/Nm. With the testing temperature increasing to 600 °C and 800 °C, a brittle to ductile transition of SrSO4 takes place because of the activated slip systems. The friction coefficient and wear rate of SrSO4 ceramic also obviously decrease to 0.37 and about 10−4 mm3/Nm at 800 °C. The significant improvement of the tribological properties is ascribed to the formation of a smooth and continuous SrSO4 lubricating film with excellent ductility and low shear strength at elevated temperature. SrSO4 is considered to be a potential candidate for high-temperature solid lubricant with excellent lubricity.

scholarly journals Effect of heat treatment on the tribological properties of Nickel-Boron electroless coating

2018 ◽  
Vol 27 (47) ◽  
pp. 101
Author(s):  
Sandra Arias ◽  
Maryory Gómez ◽  
Esteban Correa ◽  
Félix Echeverría-Echeverría ◽  
Juan Guillermo Castaño
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Wear Resistance ◽  
Carbon Steel ◽  
Tribological Properties ◽  
Tribological Performance ◽  
Dry Sliding ◽  
Electroless Coating ◽  
Before And After ◽  
Properties Of Materials

Nickel-Boron autocatalytic coatings are widely used in several industries to improve mechanical properties of materials such as hardness and wear resistance. Tribological properties were evaluated in Ni-B autocatalytic coatings deposited on AISI/SAE 1018 carbon steel before and after a heat treatment at 450 °C for one hour. Tribological tests were carried out by dry sliding, using a load of 5 N and a sliding speed of 0.012 m/s, in a homemade ball-on-disk tribometer, which followed ASTM G99 standard. According to the tribological evaluation, the heat treatments applied to Ni-B coatings improved their tribological performance. This research corroborates that by applying an adequate heat treatment, hardness and wear resistance of Ni-B coatings can be improved significantly.

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