Effects of contact pressure and sliding distance on the lubricated friction and wear properties of Zn-25Al-3Cu alloy: A comparative study with SAE 65 bronze

2015 ◽  
Vol 106 (10) ◽  
pp. 1060-1066 ◽  
Author(s):  
Temel Savaşkan ◽  
Hasan Onur Tan ◽  
Reza Anvari Maleki
Keyword(s):  
Comparative Study ◽  
Contact Pressure ◽  
Friction And Wear ◽  
Wear Properties ◽  
Friction And Wear Properties ◽  
Sliding Distance

A Comparative Study on the Friction and Wear Properties of Three Different Copper Alloys

2018 ◽  
Vol 913 ◽  
pp. 205-211
Author(s):  
Dong Mei Liu ◽  
Qiang Song Wang ◽  
Wei Yuan ◽  
Xu Jun Mi
Keyword(s):  
Friction Coefficient ◽  
Comparative Study ◽  
Dry Friction ◽  
Friction And Wear ◽  
Copper Alloys ◽  
Friction Condition ◽  
Al Alloy ◽  
Wear Properties ◽  
Friction Coefficients ◽  
Friction And Wear Properties

A comparative study on the friction and wear properties of three kinds of copper alloys, including Cu-Ni based, Cu-Al and Cu-Be alloys was carried out in this study. The friction pair was stainless steel, and both dry and MoS2 lubrication friction experiments were investigated. During the experiments, different loads were chosen for different alloys. It was found that under dry friction condition, the friction coefficients of both Cu-Ni based and Cu-Al alloys did not change as the loads changes, whereas the friction coefficient of Cu-Be alloy increased as the loads increases. Under lubrication friction condition, the friction coefficients of all three alloys did not change as the load changes. The results show that the dry friction coefficient of Cu-Ni based alloy was the largest (0.74), the Cu-Al alloy next (0.60), and the Cu-Be alloy had the smallest dry friction coefficient (0.54). The lubrication friction coefficient of Cu-Ni based and Cu-Be was equal and relatively smaller (0.12), whereas the Cu-Al alloy had a relative larger lubrication friction coefficient (0.27). The microstructure observations were consistent with the friction and wear performance, and the SEM results show that different wear mechanisms were dominated for different alloys.

scholarly journals Comparison of Frictional Properties of CVD-Grown MoS2 and Graphene Films under Dry Sliding Conditions

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 293 ◽  
Author(s):  
Dae-Hyun Cho ◽  
Jaehyuck Jung ◽  
Chan Kim ◽  
Jinhwan Lee ◽  
Se-Doo Oh ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Friction And Wear ◽  
Graphene Film ◽  
Sliding Surface ◽  
Si Substrate ◽  
Wear Properties ◽  
Si Substrates ◽  
Mos2 Film ◽  
Friction And Wear Properties ◽  
Contact Pressures

In the present study, dry friction and wear properties of atomically thin CVD-grown graphene and MoS2 films on SiO2/Si substrates were compared at low (72 MPa) and high (378 MPa) contact pressures. Analysis of atomic force microscopy images of these films verified that the MoS2 films, which were directly grown on the SiO2/Si substrates, had clean surfaces and made conformal contacts with the substrates. In contrast, the graphene film showed many contaminants on its surface and was loosely bonded with its SiO2/Si substrate due to its wet transfer from a Cu foil to the substrate. The MoS2 film exhibited friction and wear properties superior to those of the graphene film both at low and high contact pressures. We found that the clean sliding surface and strong bonding with SiO2/Si were the main causes of the superiority of the MoS2 film compared to the graphene film. Mild wear occurred in a layer-by-layer fashion at low contact pressure for the MoS2 film. At high contact pressure, severe wear occurred due to failure at the boundary between the MoS2 films and the underlying substrates. At both contact pressures, friction did not increase immediately after the removal of the MoS2 film from the SiO2/Si substrate because the film transferred onto the counter sliding surface and served as a lubricant.

Friction and Wear Behavior of Moglice Polymer Composite through Dry Sliding Ball-on-Flat Reciprocating Test

2015 ◽  
Vol 808 ◽  
pp. 137-142 ◽  
Author(s):  
Virgil Iliuţă ◽  
Minodora Rîpă ◽  
Adriana Preda ◽  
Gabriel Andrei
Keyword(s):  
Dry Friction ◽  
Friction And Wear ◽  
Room Temperature ◽  
Wear Behavior ◽  
Wear Properties ◽  
Molybdenum Disulphide ◽  
Friction And Wear Behavior ◽  
Metal Parts ◽  
Friction And Wear Properties ◽  
Sliding Distance

This paper presents an experimental evaluation of friction and wear properties of a composite material-moglice - made by Diamant Metallplastic GmbH company, from Germany. This material is a polymeric matrix reinforced with particles of cristobalite (αSiO2) and molybdenum disulphide (MoS2). The material is recommended by the manufacturer for repairing metal parts. This material was tribologically tested in dry friction conditions, on a ball on flat configuration, using the reciprocating method, on a CETR UMT-2 tribometer (Bruker Corporation). The counterpart was a steel ball. The tests were performed at room temperature in normal conditions of relative humidity of 40-60% using an average sliding speed of 3.5 mm/s. The tests were carried out at normal loads of 20, 30, 40 and 50N over a sliding distance of 100 m. The wear traces obtained were optically examined with μSCAN laser profilometer (NANOFOCUS).

Effects of Load and Sliding Distance on the Wear Properties of Hybrid Friction Materials

2011 ◽  
Vol 686 ◽  
pp. 401-405 ◽  
Author(s):  
Ning Zhang ◽  
Li Xiang Chen ◽  
Yan Sheng Yin ◽  
Ye Han ◽  
Zong Feng Wang
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Friction And Wear ◽  
Phenolic Resin ◽  
Matrix Material ◽  
Wear Properties ◽  
Friction Materials ◽  
Potassium Titanate ◽  
Friction And Wear Properties ◽  
Sliding Distance

Hybrid friction materials were manufactured with glass fiber, potassium titanate whisker and aramid fiber as reinforcement and the phenolic resin modified by lumbar pericarps oil as matrix material. The effects of load and sliding distance on friction and wear properties were studied by single variable experiments. The worn surfaces of the samples were studied by Scanning Electron Microscope (SEM). The results showed that friction coefficient and wear rate can be significantly increased when the load was increased up to 250N. The friction coefficient varied between 0.25 and 0.3 while the wear rate reduced to 0.49×10-6 g/(N·m) in the sliding distance longer then 80m. Wear mechanism of samples were to be adhesive and abrasive wear.

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