scholarly journals Tribological Analysis of novel Apricot oil based Biolubricant against 15W40 oil tested on High Temperature Tribometer

2021 ◽  
Author(s):  
Anshul Kumar ◽  
◽  
Rajiv Chaudhary ◽  
Ramesh Chand Singh ◽  
◽  
...  
Keyword(s):  
High Temperature ◽  
Tribological Behavior ◽  
Environmentally Friendly ◽  
Petroleum Products ◽  
Prunus Armeniaca ◽  
Environmental Damage ◽  
Pin On Disc ◽  
Tribological Analysis ◽  
Wear Tests ◽  
Friction And Wear Tests

Nowadays, petroleum products have become an integral part of day-to-day life. Lubricants made from petroleum products were widely used as automobile lubricants. But the use of petroleum-based lubricants has significantly damaged the environment. The concern of environmental damage caused by petroleum-based lubricants has increased the search for environmentally friendly lubricants. The vegetable oil-based lubricants proved to be environmentally friendly. In the present work, a bio lubricant is produced from the apricot oil, scientifically known as Prunus Armeniaca, using the trans-esterification method. The tribological behavior is analyzed for pure bio-lubricant, 15W40 oil, and also for the blend of apricot oil and 15w40 at different volume percentages. A high-temperature Pin on disc tribometer is used to perform friction and wear tests at 40oC and 100oC. It was found that the blend of apricot oil-based biolubricants and 15W40 lubricant showed better tribological behavior as compared to the pure bio-lubricant and 15W40 oil alone.

scholarly journals Tribological behaviour of microalloyed and conventional C–Mn rail steels in a pure sliding condition

2018 ◽  
Vol 232 (9) ◽  
pp. 2201-2214 ◽  
Author(s):  
JL Viesca ◽  
S González-Cachón ◽  
A García ◽  
R González ◽  
A Hernández Battez
Keyword(s):  
Friction And Wear ◽  
Microalloyed Steel ◽  
Rail Steel ◽  
Tribological Behaviour ◽  
Climate Chamber ◽  
Electron Microscopies ◽  
Test Conditions ◽  
Pin On Disc ◽  
Wear Tests ◽  
Friction And Wear Tests

This paper compares the tribological behaviour of microalloyed rail steel with conventional C–Mn rail steel under different test conditions (load, temperature and humidity). Pin-on-disc tribological tests were performed inside a climate chamber under different loads (20, 30 and 40 N), relative humidity (15, 55 and 70%) and temperatures (20 and 40 ℃). After the friction and wear tests, the worn surfaces were analysed using both confocal and scanning electron microscopies. The results obtained show that the use of microalloyed steel in railway applications under severe conditions (high loads and humidity) could lead to increased service life of the rails and could extend the time between maintenance operations.

scholarly journals Optimization of Wear Performance of Electroless Ni-B Coating under Lubrication

2016 ◽  
Vol 7 ◽  
pp. 94-103 ◽  
Author(s):  
Santanu Duari ◽  
Arkadeb Mukhopadhyay ◽  
Tapan Kumar Barman ◽  
Prasanta Sahoo
Keyword(s):  
Tribological Behavior ◽  
Normal Load ◽  
Substrate Material ◽  
X Ray Diffraction ◽  
Wear Performance ◽  
X Ray ◽  
Confirmation Test ◽  
Pin On Disc ◽  
Electroless Ni ◽  
Wear Tests

This paper presents an experimental study on tribological behavior of electroless Ni-B coating under lubricated condition based on Taguchi’s method. Mild steel specimens are used as the substrate material for the deposition of Ni-B coating and the thickness of the deposits is found to be around 35 μm. Based on Taguchi’s L27 orthogonal array of experiments, the wear tests are done on a pin-on-disc type tribotester This experiment is carried out by utilizing the combination of process parameters of the tribotester like normal load, sliding speed and duration of sliding. The analysis of the experimental data is carried out with the help of MINITAB® software package. It is seen that the normal load is the most significant factor followed by sliding time at 99% confidence level. The surface morphology, composition and compound analysis of the coatings are done by means of scanning electron microscope, energy dispersed X-ray micro-analyzer and X-ray diffraction analyzer respectively. Finally, a confirmation test is carried out to validate the analysis.

EXPERIMENTAL INVESTIGATION TO ENHANCE THE TRIBOLOGICAL CHARACTERISTICS OF A LUBRICANT USING NANOPARTICLE ADDITIVE

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Santhosh V ◽  
Babu N
Keyword(s):  
Experimental Investigation ◽  
Friction And Wear ◽  
Piston Ring ◽  
Cylinder Liner ◽  
Cuo Nanoparticles ◽  
Effective Combination ◽  
Performance And Emissions ◽  
Pin On Disc ◽  
Wear Tests ◽  
Friction And Wear Tests

Copper oxide (CuO) nanoparticles were found to be an excellent additive to the lubricant in order to reduce the friction and wear between piston ring and cylinder liner. Friction and wear tests have been done experimentally using a pin on disc machine. Input parameters like load, speed, distance travelled are varied for each test, so that an effective combination for the minimal friction and wear have been obtained. The effect of adding additive is also found by varying the percentage of the nanoparticle in the lubricant. Also, after the best ratio for the additive in lubricant is selected, it can be used to run the engine in the laboratory, so that the performance and emissions of the engine with the new lubricant can be obtained. Finally, comparison can be made with the engine using existing lubricant.

Tribological Properties of Cast Al6061-Si3N4 Composite

2009 ◽  
Author(s):  
C. S. Ramesh ◽  
R. Keshavamurthy ◽  
B. H. Channabasappa
Keyword(s):  
Wear Rate ◽  
Molten Metal ◽  
Coefficient Of Friction ◽  
Friction And Wear ◽  
Matrix Alloy ◽  
Test Conditions ◽  
Pin On Disc ◽  
Type Machine ◽  
Wear Tests ◽  
Friction And Wear Tests

Si3N4 reinforced Al6061 composite is fabricated by liquid metallurgy technique. Si3N4 particles are nickel coated prior to addition to molten metal to improve its wettability and to ensure excellent bond between matrix and the reinforcement. Metallographic studies, friction and wear tests were carried out using pin on disc type machine. Coefficient of friction and wear rate were measured at loads varying from 20–100N and sliding velocities from 0.314–1.574m/s. It is observed that Al6061-4wt%Si3N4 composites exhibited lower wear rate and lower coefficient of friction when compared with matrix alloy under all the test conditions studied.

scholarly journals Tribological behavior of Ti-6Al-4V and Ti-6Al-7Nb Alloys for Total Hip Prosthesis

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Mamoun Fellah ◽  
Mohamed Labaïz ◽  
Omar Assala ◽  
Leila Dekhil ◽  
Ahlem Taleb ◽  
...  
Keyword(s):  
Friction And Wear ◽  
Hip Prosthesis ◽  
Tribological Behavior ◽  
Wear Behavior ◽  
Femoral Stem ◽  
High Strength ◽  
Wear Performance ◽  
Grain Structures ◽  
Pin On Disc ◽  
Wear Tests

The aim of the study is to evaluate the friction and wear behavior of high-strength alloys Ti-6Al-7Nb used in femoral stem and compare it with a Ti-6Al-4V alloy cylindrical bar corresponding to ISO 5832-3 part 3/01-07-199 standard. The tribological behavior was investigated by wear tests, using ball-on-disc and pin-on-disc tribometers. These tests consisted of measuring the weight loss and the friction coefficient of samples. The oscillating friction and wear tests have been carried out in ambient with oscillating tribotester in accordance with standards ISO 7148, ASTM G99-95a, and ASTM G133-95 under different conditions of normal loads (3, 6, and 10 N) and sliding speeds (1, 15, and 25 mm·s−1). As counter pairs, a 100Cr6 steel ball with 10 mm in diameter was used. Results show that the two alloys had similar friction and wear performance, although their grain structures and compositions are different. Occurrence of large frictional occurred, is probably caused by formation and periodic, localized fracture of a transfer layer. Higher friction with larger fluctuation and higher wear rate was observed at the higher siding speed. The Ti-6Al-4V wear mechanism transforms from ploughing and peeling off wear at low sliding speed to plastic deformation and adhesive wear.

Tribological Analysis by Concentration Effect of Boron Carbide and Graphite on the Aluminum Composites

2019 ◽  
Vol 969 ◽  
pp. 163-168
Author(s):  
K. Rajkumar ◽  
Subramanian Varun ◽  
Ganesh Prasanna ◽  
Chellu Sreyas ◽  
A. Gnanavelbabu
Keyword(s):  
Boron Carbide ◽  
Matrix Composites ◽  
Tribological Behaviour ◽  
Sem Image ◽  
Pin On Disc ◽  
Tribological Analysis ◽  
Materials Used ◽  
Carbide Particles ◽  
Sem Image Analysis ◽  
Wear Tests

Aluminium matrix composites (AMCs) are indispensable materials used extensively in the aerospace and automobile industries and are highly endorsed due to their good mechanical properties. In this paper, various compositions of the AMCs were fabricated, tested and analyzed using pin on disc tribometer test to understand the tribological behaviour and wear mechanism properties. The volume percentages of the Aluminium composite reinforced with boron carbide and graphite present in the form of Al-B4C-Graphite are Al-B4C (5%)-Graphite (5%), Al-B4C (10%)-Graphite (5%), Al-B4C (5%)-Graphite (15%), Al-B4C (10%)-Graphite (15%), Al-B4C (15%)-Graphite (15%). Loads were varied in steps of 10N, from 10N to 50N while the sliding velocity was correspondingly set as 0.7, 1.4 and 2.1m/s. SEM image analysis was conducted to understand surface tribology after wear tests. The composite Al-B4C (15%)-Graphite (15%) exhibited best wear resistance which can be credited to the bearing capacity of boron carbide particles and adherent graphite layer.

Microstructure and Tribological Behavior of Ultra-Fine Cemented Carbides

2016 ◽  
Vol 693 ◽  
pp. 586-593 ◽  
Author(s):  
Y.Z. Pan ◽  
Jun Zhao ◽  
J. Zhang
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
Friction And Wear ◽  
Tribological Behavior ◽  
Effective Means ◽  
Cemented Carbides ◽  
Chemical Compositions ◽  
Wear Tests ◽  
Friction And Wear Tests ◽  
Rigid Skeleton

The chemical compositions and microstructures of several different cemented carbides were checked by XRD, XRF, SEM, metallographic microscope and stereomicroscope. The influences of phase compositions and microstructures on mechanical properties were investigated. The results show that improving the Co content and refining WC grain properly are effective means to acquire the excellent mechanical properties of cemented carbide. A series of friction and wear tests were carried out in a high-speed tribometer to explore the tribological behavior of three cemented carbides with different Co content and WC grain size against aluminum alloy 7050-T7451. It was found that the tribological behaviors of cemented carbides are largely dependent on their microstructures and mechanical properties. The enhancement of flexural strength and fracture toughness can be ascribed to deformation buffering effects of Co binder, but the improved hardness depends on the rigid skeleton of WC-WC grains.

Tribological properties of High Density Polyethylene based composite: The effect of mollusc shell particles under dry condition

2020 ◽  
pp. 002199832096565
Author(s):  
Besma Sidia ◽  
Walid Bensalah
Keyword(s):  
Tribological Properties ◽  
High Density Polyethylene ◽  
Tribological Behavior ◽  
High Density ◽  
Ftir Analysis ◽  
Mollusc Shell ◽  
Sem Images ◽  
Pin On Disc ◽  
Shell Particles ◽  
Wear Tests

This article highlights the importance of the addition of Mollusc shell (MS) particles, as bio-filler, on the tribological behavior of high-density polyethylene (HDPE) matrix. The elaborated biocomposites are intended to be used as an orthopedic replacement biomaterial. Different mass content of MS (0, 5, 10, 15 and 20 wt. %) have been added to the HDPE matrix. FTIR analysis, crystallinity rate and Rockwell hardness of different bio-composites were performed. A reciprocating pin-on-disc tribometer was used to fulfil dry wear tests. FTIR analysis showed that the presence of MS particles improved the crystallinity of the HDPE phase. Adding to that, it was found that MS improved the hardness, friction coefficient and wear resistance of the HDPE polymer. In fact, by adding 5 wt. % of MS to the HDPE, good tribological properties were achieved. Scanning Electron Microscopy (SEM) was performed to investigate the wear morphology of biocomposites under dry condition. SEM images showed that the morphology of the worn surfaces had been improved by the addition of MS to the polymer. Finally, a wear scenario was proposed.

scholarly journals Modification of tribological tester t-01m allowing testing in conditions of lubrication

2019 ◽  
Vol 252 ◽  
pp. 08004
Author(s):  
Piotr Sadowski ◽  
Emil Czajka
Keyword(s):  
Friction Pair ◽  
Wear Intensity ◽  
Joint Friction ◽  
Tribological Tests ◽  
Wide Range ◽  
Pin On Disc ◽  
Wear Friction ◽  
Friction Parameters ◽  
Wear Tests ◽  
Friction And Wear Tests

Researchers often want to develop their experiments in terms of wide range of testing conditions and results possible to acquire. One way to achieve this is to adapt existing testing equipment to new requirements. This paper proposes a method for extending the capabilities of the T-01M tester with a pressure lubrication system of a pin on disc contact, its construction and adjustments. Tribological tests carried out with the presence of a lubricant showed the correct functioning of the modified tester. We obtained several variables for the selected friction pair and friction parameters in the lubricated joint: friction force, friction coefficient, mass wear, friction work, wear intensity and specific wear. Verification tests confirmed suitability of the tester modification, adapting it to friction and wear tests in a lubricated contact. The expanded stand can be used (in the future) for tribological tests of lubricated frictional pairs to measure friction, wear, friction pairs temperature and to compare used lubricants.

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