Friction and Wear Properties of Polyamide 66 Composites Filled with Carbon Fiber under Dry Sliding and Oil Lubricated Condition

2011 ◽  
Vol 148-149 ◽  
pp. 612-615 ◽  
Author(s):  
Zhi Yong Cai ◽  
Wen Xia Wang
Keyword(s):  
Coefficient Of Friction ◽  
Friction And Wear ◽  
Applied Pressure ◽  
Tribological Performance ◽  
Dry Sliding ◽  
Polyamide 66 ◽  
Wear Properties ◽  
Wear Rates ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties

The tribological performance of pure polyamide 66 (PA66) and Carbon fibre (CF) reinforced PA66 composite were studied at dry sliding and oil lubricated conditions. The results show that the coefficient of friction and specific wear rates for pure PA66 and CF/PA66 composite slightly in increase with the increase in applied pressure values. On the other hand the coefficient of friction is in decrease while the specific wear is in increase with the increase in sliding speed values.

Tribological Performance of Pulse Electroplated Ni-P/BN(h) Composite Coatings

2011 ◽  
Vol 103 ◽  
pp. 504-508 ◽  
Author(s):  
Cheng Zhang Peng ◽  
Ling Ling Zhu ◽  
Si Wen Tang
Keyword(s):  
Electron Microscope ◽  
Friction And Wear ◽  
Composite Coatings ◽  
Tribological Performance ◽  
Dry Sliding ◽  
Wear Properties ◽  
Plating Bath ◽  
Pulse Electroplating ◽  
Friction And Wear Properties ◽  
Scanning Electron

The Ni-P/ BN(h) composite coatings were prepared by pulse electroplating. The friction and wear properties of the composite coatings were investigated by using friction and wear tester under dry sliding condition, the worn surfaces morphology of the composite coatings were observed by scanning electron microscope (SEM).The results show that the wear rate and friction coefficient of the composite coating against 45 steel decrease with the increase of BN(h) content in plating bath, the wear mechanism is mild abrasion.

Effect of Thermal Conduction on Tribological Properties of Polytetrafluoroethylene Based Composites

2010 ◽  
Vol 150-151 ◽  
pp. 655-658
Author(s):  
Ting Xie ◽  
Gang Chen ◽  
Yan Guo Yin ◽  
Ming Hua Jiao ◽  
Jian Wei Yu ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Thermal Conduction ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Wear Properties ◽  
Copper Particles ◽  
The Poor ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties ◽  
Ptfe Composites

Due to the poor thermal conduction of polytetrafluoroethylene (PTFE), some fillers are often added into PTFE matrix to improve its thermal conduction and enhance its tribological performance. In our work, to increase their thermal conduction, the PTFE composites with different contents of copper particles were prepared. The friction and wear properties of the composites were tested. The effect of thermal conduction on tribological properties of the PTFE based composites was analyzed, and the wear mechanisms were also discussed. The results showed that with the increase of the thermal conductivity of the PTFE based composites, the coefficient of friction of the materials reduced, and the wear of the materials was dramatically decreased.

Friction and Wear Properties of Chemomechanically Polished Diamond Films

1994 ◽  
Vol 116 (3) ◽  
pp. 445-453 ◽  
Author(s):  
B. K. Gupta ◽  
Ajay Malshe ◽  
Bharat Bhushan ◽  
Vish V. Subramaniam
Keyword(s):  
Coefficient Of Friction ◽  
Diamond Film ◽  
Friction And Wear ◽  
Elevated Temperatures ◽  
Natural Diamond ◽  
Diamond Films ◽  
Wear Properties ◽  
Crystal Silicon ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties

The role of surface roughness on the coefficient of friction and wear of polished CVD diamond films has been investigated. Diamond films grown on single crystal silicon (001) substrates by Hot Filament Chemical Vapor Deposition (HFCVD) process were polished by a chemomechanical process in which a diamond film was polished against another diamond film in the presence of a fused alkaline oxidizer at 320°C. Friction and wear properties of these polished films were measured at elevated temperatures and in the presence of various gaseous environments. The coefficient of friction of the polished diamond films was found to be about 0.09, which is very close to that of natural diamond (0.07). The wear rate of the mating alumina ball slid against a polished diamond film was also found to be comparable, when slid natural diamond.

scholarly journals Utilization of TiO2/gC3N4 nanoadditive to boost oxidative properties of vegetable oil for tribological application

Friction ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 273-287
Author(s):  
Nisha Ranjan ◽  
Rashmi C. Shende ◽  
Muthusamy Kamaraj ◽  
Sundara Ramaprabhu
Keyword(s):  
Vegetable Oil ◽  
Friction And Wear ◽  
Oxidation Behavior ◽  
Tribological Performance ◽  
Effect Of Temperature ◽  
Wear Properties ◽  
Promising Alternative ◽  
Mineral Oils ◽  
Tribological Application ◽  
Friction And Wear Properties

AbstractThe emergence of vegetable oil as a promising alternative lubricant in the tribological application space has fueled research for making these oils as useful as mineral oils. Tribological modification of vegetable oil by the addition of TiO2/gC3N4 nanocomposite (as a nanoadditive) was studied here. The dispersion of the nanoadditive in the vegetable oil showed good oil dispersion stability without the addition of any surfactant. The tribological studies were conducted in a four-ball tester using ASTM standard D5183. In addition, the effect of temperature on tribological performance was also studied to understand the oxidation behavior of vegetable oil. The results showed a significant improvement in friction and wear properties of the optimized nano-oil. The mechanism behind the improvement in friction and wear properties is annotated in this paper.

The Analysis on the Tribological Properties of CR/EPDM Blends with Chrome-Plated Steel under Dry Sliding

2013 ◽  
Vol 774-776 ◽  
pp. 99-102 ◽  
Author(s):  
Lian Hua Zhao ◽  
Xiao Bo Wei ◽  
Xiao Guang Li
Keyword(s):  
Friction And Wear ◽  
Conveyor Belt ◽  
Operating Conditions ◽  
Dry Sliding ◽  
Wear Properties ◽  
Transportation Equipment ◽  
Pros And Cons ◽  
Friction And Wear Properties ◽  
Technology Comparison ◽  
Better Than

It is based on actual working conditions and parameters of the conveyor belt, to reach the purpose of the optimizing rubber by different rubbers mixing technology. Comparison the five kinds rubber and metal of the friction characteristics in dynamic fit, obtained a performance excellent rubber in the specific operating conditions. Then improve the overall service life of the transportation equipment. It is first prepared the same hardness CR and EPDM and blends that is ratio of 2:8, 5:5and8:2 in this article. The pros and cons of the five rubbers are analyzed by friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed, friction and wear and wear mechanism of five rubbers with chrome-plated steel comparatively analyses to determine CR/EPDM = 8:2 blends has the heat resistance and wear resistance are better than CR and EPDM under dry sliding conditions.

The Effect of Tribofilm Formation and Humidity on the Friction and Wear Properties of Ceramic Materials

1992 ◽  
Vol 114 (1) ◽  
pp. 131-140 ◽  
Author(s):  
K. Komvopoulos ◽  
H. Li
Keyword(s):  
Steady State ◽  
Wear Debris ◽  
Friction And Wear ◽  
Ceramic Materials ◽  
Composition Analysis ◽  
Wear Properties ◽  
Qualitative Comparison ◽  
Wear Rates ◽  
Subsurface Material ◽  
Friction And Wear Properties

The processes of tribofilm formation and disruption and the predominant tribo-mechanisms of unlubricated ceramic materials were investigated experimentally. Sliding experiments in humidity controlled atmospheres revealed that the formation of interfacial tribofilms significantly affects the steady-state friction and wear properties of ceramics. Scanning electron microscopy and various composition analysis techniques demonstrated that although tribochemical reactions might occur, the principal mechanisms of tribofilm formation were the generation, agglomeration, and compaction of fine wear debris produced from both sliding surfaces. The tribofilms exhibited different tribological characteristics, depending on their elemental compositions and the humidity. For all the ceramic pairs tested, the steady-state coefficients of friction decreased with relative humidity. In contrast to the conventional fracture toughness approach, surface profilometry and microscopy studies showed that the highest wear rates were encountered with the toughest ceramic. Plowing grooves parallel to the direction of sliding, fine wear debris of round and cylindrical shapes, microcracking, and localized delamination of the tribofilms were identified. Microscopic observations suggested that damage of the subsurface material adjacent to the interface of the tribofilms was immeasurable. Qualitative comparison of the topographical features of worn surfaces indicated that, depending on the humidity and the type of ceramic, microplasticity, microfracture, and delamination of the tribofilms were the prevailing steady-state tribomechanisms.

Friction and Wear Property of Ti(C,N)/ZrO2/WC Nano-Composite Cermet Die Material

2013 ◽  
Vol 834-836 ◽  
pp. 23-28 ◽  
Author(s):  
Jun Ma ◽  
Chong Hai Xu ◽  
Ming Dong Yi ◽  
Guang Chun Xiao ◽  
Xing Hai Wang
Keyword(s):  
Friction And Wear ◽  
Adhesive Wear ◽  
Wear Property ◽  
Wear Properties ◽  
Nano Composite ◽  
Die Materials ◽  
The Coefficient Of Friction ◽  
Die Material ◽  
Friction And Wear Properties ◽  
Oxidation Wear

Ti (C,N)/ZrO2/WC nanocomposite cermet die materials were fabricated by vacuum hot pressing process, the materials have better comprehensive mechanical properties. The friction and wear properties of Ti (C,N)-based nanocomposite cermet die materials were studied, and the worn surfaces microstructure were observed and analysed by SEM and XRD. The experimental results showed that when the rotate speed was higher, the coefficient of friction of the developed cermet die material, which is 0.3-0.4, was lower than that without the addition of nanoZrO2 and micrometer WC. The main wear mechanisms were abrasive wear, oxidation wear and adhesive wear.

Tribological Properties of the Overbased Calcium Sulfonate Complex Greases Containing Different Lubricant Additives

2013 ◽  
Vol 645 ◽  
pp. 133-136
Author(s):  
Peng Qiao ◽  
Yan Qiu Xia ◽  
Xiang Yu Ge
Keyword(s):  
Ionic Liquid ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Tribological Performance ◽  
Mining Equipment ◽  
Wear Properties ◽  
Friction Tester ◽  
Calcium Sulfonate ◽  
Friction And Wear Properties

Overbased calcium sulfonate complex greases have excellent friction and wear properties and have been widely used in metallurgy and mining equipment. The effects and tribological performance of molybdenum dialkydithiocarbamate (MoDTC) and ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHMim][NTf2]), 1-(2-hydroxyethyl)-3-hexylimidazolium bis (trifluoromethylsulfonyl) imide ([C2OHHim][NTf2s]), added in overbased calcium sulfonate complex grease as additives were investigated by using reciprocating ball-on-disk sliding friction tester. The results showed that the two kinds of additives with a certain range of concentration could improve the tribological properties of greases.

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