Experimental investigation of tribological effect on vegetable oil with CuO nanoparticles and ZDDP additives

2019 ◽  
Vol 71 (3) ◽  
pp. 499-508 ◽  
Author(s):  
Gitesh Kumar ◽  
Hem Chander Garg ◽  
Ajay Gijawara
Keyword(s):  
Friction And Wear ◽  
Operating Time ◽  
Cuo Nanoparticles ◽  
Zinc Dialkyldithiophosphate ◽  
Content Type ◽  
Base Oil ◽  
Wear Characteristics ◽  
Vis Spectroscopy ◽  
Pin On Disc ◽  
Friction And Wear Characteristics

PurposeThis paper aims to report the friction and wear characteristics of refined soybean oil (RSBO) blended with copper oxide (CuO) nanoparticles and zinc dialkyldithiophosphate (ZDDP) as additives.Design/methodology/approachFour different concentrations 0.04, 0.05, 0.1 and 0.2 Wt.% of CuO nanoparticles were added with ZDDP in RSBO. The friction and wear characteristics of lubricants have been investigated on a pin-on-disc tribotester under loads of 120 and 180 N, with rotating speeds of 1,200 and 1,500 rpm in half hour of operating time. The dispersion stability of CuO nanoparticles has been analyzed using ultraviolet visible (UV-Vis) spectroscopy. The wearout surface of pins has been examined by using a scanning electron microscope.FindingsThe results revealed that there is a reduction in the friction and wear by the addition of CuO nanoparticles and ZDDP in RSBO. Coefficient of friction increases at a high sliding speed for RSBO with ZDDP. From UV-Vis spectroscopy, it is observed that 100 ml of oleic acid surfactant per gram of CuO nanoparticles has stable dispersion in RSBO.Originality/valueThe addition of ZDDP and CuO nanoparticles in RSBO is more efficient to reduce the friction and wear in comparison to base oil. The optimum concentration of CuO nanoparticles in RSBO is 0.05 Wt.%.

Effect of Phosphorus on the Friction and Wear Characteristics of Cu-Sn-P Alloys

1979 ◽  
Vol 101 (2) ◽  
pp. 201-206 ◽  
Author(s):  
Y. Taga ◽  
K. Nakajima
Keyword(s):  
Photoelectron Spectroscopy ◽  
Friction And Wear ◽  
Structural Changes ◽  
Surface Concentration ◽  
Wear Characteristics ◽  
X Ray ◽  
The Matrix ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Friction And Wear Characteristics

The effects of phosphorus on the friction and wear characteristics of Cu-5 at. percent Sn-P alloys containing 1–5 at. percent P were studied using a pin on disc apparatus. The results showed that the decrease in both the coefficient of friction and the rate of wear became conspicuous with the increase in quantity of Cu3P coexisting in the matrix; its amount increases with the content of phosphorus. The structural changes in the surface of the specimen due to heating in a vacuum were observed by using Auger electron spectroscopy and X-ray photoelectron spectroscopy. It was seen that the surface concentration of phosphorus strongly increased after heating at 573K, whereas the diffusion of tin atoms was markedly retarded. It was concluded from these results that the behavior of phosphorus atoms in the surface during sliding played an important role in the friction and wear characteristics of Cu-Sn-P alloys.

scholarly journals Friction and wear characteristics of robust carbon-carbon composites developed solely from petroleum pitch without reimpregnation

Friction ◽  
2019 ◽  
Vol 8 (5) ◽  
pp. 945-956 ◽  
Author(s):  
Shishobhan Sharma ◽  
Bharat Patel ◽  
Rasmika Patel
Keyword(s):  
Friction And Wear ◽  
Polarized Light ◽  
Single Step ◽  
Petroleum Pitch ◽  
Wear Characteristics ◽  
Pin On Disc ◽  
Electron Microscopes ◽  
Result Analysis ◽  
Scanning Electron Microscopes ◽  
Friction And Wear Characteristics

Abstract Friction and wear characteristics correlating the fiber reinforcement percentage of carbon-carbon (C/C) composites solely developed from petroleum pitch matrices were investigated. This study exhibits the tribo-characteristics of C/C composites developed in a single-step carbonization process for varying loads for the first time without a reimpregnation process. A pin-on-disc tribometer with a sliding speed of 0.5 m/s and loads of 5, 10, and 20 N with a flat tool grade stainless steel pin as a static partner was employed. Further, polarized light optical and scanning electron microscopes (SEM) were utilized for a morphological analysis. Elastic modulus and strength were determined by a compression test. A result analysis is conducted to analyze sliding wear accompanied with minor abrasion. The composites with a high percentage of reinforcement exhibit credible wear resistance and mechanical robustness.

Experimental Study on Friction and Wear Characteristics of Cemented Carbides YG6 with Titanium Alloys

2014 ◽  
Vol 633-634 ◽  
pp. 654-658
Author(s):  
Yong Hua Sun ◽  
Shao Hua Li ◽  
Ming Wei Ding
Keyword(s):  
Experimental Study ◽  
Wear Mechanism ◽  
Friction And Wear ◽  
Tool Material ◽  
Cemented Carbides ◽  
Wear Characteristics ◽  
Titanium Machining ◽  
Disc Rotation ◽  
Pin On Disc ◽  
Friction And Wear Characteristics

The friction and wear characteristics of different cemented carbides YG6 with Ti6Al4V alloys in different loads and speeds are revealed by pin-on-disc rotation, and analyses the wear mechanism, when the system is designed with the tribology theory to guide the development of titanium machining tool material and rational use.

Friction and wear behavior of pin-bushing with magnetorheological fluids

2017 ◽  
Vol 69 (6) ◽  
pp. 912-918 ◽  
Author(s):  
Peng Zhang ◽  
Gwanghee Lee ◽  
Chulhee Lee ◽  
Hyung Yoon
Keyword(s):  
Magnetic Field ◽  
Coefficient Of Friction ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Magnetorheological Fluids ◽  
Content Type ◽  
Friction And Wear Behavior ◽  
Wear Characteristics ◽  
The Coefficient Of Friction ◽  
Friction And Wear Characteristics

Purpose The purpose of this paper is to carry out research on friction and wear behavior of pin-bushing with magnetorheological fluids (MRFs). Design/methodology/approach The oscillation friction characteristics of MRFs with a magnetic field are evaluated by a pin-bushing friction wear tester. The housing is adjusted to apply the magnetic field to MRFs. Experiments are carried out with and without a magnetic field, and the coefficient of friction and temperature on the contact interface are measured. The surfaces of the pin and bushing are also examined by a surface profilometer and an optical microscope before and after tests. The experiment results show a lower coefficient of friction is observed when a magnetic field is applied. Findings The temperature is lowest when grease is used. The case when a magnetic field is present shows the higher temperature. The coefficient of friction is higher than grease lubrication when an MRF is applied. The coefficient of friction of the pin-bushing is lowest with grease and highest when a magnetic field is present. The friction coefficient of grease and MRFs decreases as the load increases and remains stable after 3 kN is added. The roughness, surface profile and morphology of the pin show the best results when grease is used as compared with MRFs. Originality/value The tribology characteristic of pin-bushing with MRFs shows more deficiency than that with grease. Nevertheless, it is necessary to carry out the research on the friction and wear characteristics of a pin-bushing with MRFs, as it is expected to increase the load-carrying capacity when an MRF is applied to the pin-bush system. Better friction and wear characteristics could be achieved by enhancing the property of MRFs.

scholarly journals Friction and Wear Characteristics of Rubber Resin-Bonded Metallic Brake Pad Materials

2019 ◽  
Vol 8 (6) ◽  
pp. 1312-1316
Keyword(s):  
Friction And Wear ◽  
Physical And Mechanical Properties ◽  
Friction Material ◽  
Brake Disc ◽  
Brake Pad ◽  
Sliding Velocity ◽  
Wear Characteristics ◽  
Pin On Disc ◽  
Set Up ◽  
Friction And Wear Characteristics

This paper aims to present comparative study of friction and wear characteristics of non-asbestos rubber resin bonded metallic based brake pad material. Friction material was compression moulded and machined to a sample size. Their physical and mechanical properties were studied. Experiments were conducted using Pin-on-disc test set-up against EN31 disc. Coefficient of friction and wear was measured for metallic based brake materials at varying conditions of temperature, sliding velocity, pressure and sliding distance. When brake pads are in contact with brake disc, heat is generated hence thermal behaviour of metallic based brake material and its impact on friction and wear were studied. Experiments, based on Taguchi’s analysis technique, using L9 orthogonal array were performed. On the basis of experimental results and S/N ratio analyses, ranking of the parameters have been done. It was found that temperature (95.37 %) and sliding velocity (2.99 %) are most affecting parameters in friction, However temperature (82.96 %) and pressure (6.80) in wear. The elemental composition of metallic based brake material was measured by EDS technique. SEM micrographs of brake pad samples were tested at different magnifications. Further detailed studies are suggested to evaluate wear rate, stopping distance under simulative test conditions alternate to asbestos based brake pad material.

scholarly journals A Researchon Tribological Behaviourof Pongamia Biodiesel Blended Lubricant with Cardanol Biodiesel Blended Lubricant at Different Loads

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1649-1651
Keyword(s):  
Wear Rate ◽  
Friction And Wear ◽  
Wear Test ◽  
Maximum Load ◽  
Mechanical Efficiency ◽  
Wear Testing ◽  
Sliding Velocity ◽  
Wear Characteristics ◽  
Pin On Disc ◽  
Friction And Wear Characteristics

In this world demand for bio lubricants which are easily decomposing, non-toxic and non-polluting is increasing day by day. This paper describes and compares the friction and wear characteristics of Pongamia blended lubricant with Cardanol blended lubricant by using Pin on disc wear testing Tribometer. For the preparation of blended lubricants, cardanol and pongamia based biodiesel were blended with base lubricant SAE20W40 in the ratios of 5, 10, and 20% on volume basis. The friction and wear characteristics of Cardanol and pongamia blended bio lubricants were carried out at the loads of 50N, 100N and 150N with the sliding velocity of 2.5m/s. By adding 5% and 10% pongamia biodiesel with base lubricant, less wear rate was observed. When this limit wear rate exceeds is also increasing gradually. While carrying out the wear test with Cardanol oil blended lubricant, least wear rate was observed during the addition of 5% and 20% Cardanol oil blended lubricant with base lubricant. The wear rate was increased while adding 10% of Cardanol oil blended lubricant with base lubricant. It has been concluded that CBL 5 and CBL 15 can act as an alternative lubricant at minimum and maximum load to increase mechanical efficiency at 2.5m/s sliding velocity and dependency on petroleum-based products was reduced with its contribution

Experimental Analysis of Tribological Properties of Simarouba Glauca Biodiesel With Nanoparticles

2020 ◽  
Vol 8 (2) ◽  
pp. 52-65
Author(s):  
Eknath Nivrutti Aitavade ◽  
S. C. Kamate
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Sio2 Nanoparticles ◽  
Cuo Nanoparticles ◽  
Base Oil ◽  
Wear And Friction ◽  
The Coefficient Of Friction ◽  
Simarouba Glauca ◽  
Friction Parameters ◽  
Friction And Wear Characteristics

Biolubricants are renewable, biodegradable, nontoxic, and have zero greenhouse gases. In this work, the tribological properties of the Simarouba glauca biodiesel (SBD) are studied with nanoparticles as additives. Nanoparticles of copper oxide (CuO) and silicon dioxide (SiO2) were added with 0.2, 0.5, 0.75, and 1% weight (wt) in the base SBD. The coefficient of friction (COF) and the wear scar diameters (WSD) were evaluated using four ball tester for the test conditions as per ASTM D 4172 standard. The morphologies of the worn surfaces were inspected by scanning electron microscope (SEM). The addition of nanoparticles improved the friction and wear characteristics of SBD. A combination of abrasive and adhesive wear was evident. The average COF for pure SBD was 0.0168. The results indicated that 0.75% and 0.2% of CuO nanoparticles as a beneficial percentage in the base oil exhibiting the lowest COF and WSD. CuO nanoparticles proved to be superior to SiO2 nanoparticles as additives in SBD, demonstrating 8% and 60% decrease in wear and friction parameters, respectively.

A preliminary investigation on the use of the pin-on-disc test to simulate off-brake friction and wear characteristics of friction materials

Wear ◽  
2018 ◽  
Vol 410-411 ◽  
pp. 202-209 ◽  
Author(s):  
Matteo Federici ◽  
Stefano Gialanella ◽  
Mara Leonardi ◽  
Guido Perricone ◽  
Giovanni Straffelini
Keyword(s):  
Friction And Wear ◽  
Preliminary Investigation ◽  
Friction Materials ◽  
Wear Characteristics ◽  
Pin On Disc ◽  
Friction And Wear Characteristics
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