Wear Behaviour of Binary Oil Mixtures Under Extreme-Pressure Conditions

2005 ◽  
Author(s):  
J. E. Fernandez Rico ◽  
A. Hernandez Battez ◽  
R. Chou Rodriguez
Keyword(s):  
Optical Microscope ◽  
Test Material ◽  
Wear Behaviour ◽  
Extreme Pressure ◽  
Wear Scar Diameter ◽  
Low Viscosity ◽  
Aisi 52100 ◽  
Oil Mixtures ◽  
Aisi 52100 Steel ◽  
Made In

This work presents and discusses the extreme-pressure properties of binary oil mixtures made with a low viscosity polyalphaolefin (PAO 6) and two esters (TMP-05 and sunflower oil, SO). Tests were made in a four-ball machine tester using the ASTM D 2783-88. The ball test material was AISI 52100 steel, 12.7 mm. in diameter, with a hardness of about 65 HRC. The wear scar diameter (WSD) was measured with an optical microscope. The results showed that: although PAO 6, TMP-05 and SO have different physical properties, they perform similar behavior under high loads; TMP-05 and SO have better results in wear tests than PAO 6, but their extreme-pressure properties are similar; and TMP-05 and SO act as wear reducers when they are added to PAO 6, but they do not improve its behavior under high loads.

Friction and Wear Properties of Laser Cladding Coatings under Boundary Lubrication Conditions

2011 ◽  
Vol 314-316 ◽  
pp. 143-146
Author(s):  
Xin Feng ◽  
Yan Qiu Xia
Keyword(s):  
Phase Composition ◽  
Laser Cladding ◽  
Friction And Wear ◽  
Liquid Paraffin ◽  
Extreme Pressure ◽  
Wear Properties ◽  
Aisi 52100 ◽  
Aisi 1045 ◽  
Aisi 52100 Steel ◽  
Friction And Wear Properties

AISI 1045 steels were laser-clad with Ni-based powder by CO2 HJ-4 coherent laser. The phase composition of the laser-cladding coating was investigated by means of X-ray diffraction (XRD). The cross-section of the cladding coating was observed using a scanning electron microscopy (SEM). The friction and wear properties of the laser cladding coatings sliding against AISI 52100 steel under the lubrication of liquid paraffin containing various anti-wear and extreme pressure additives were investigated using an Optimol SRV reciprocating motion friction and wear tester. Results showed that the laser-cladding coating considerably decreased coefficient of friction and increased wear resistance in sliding against AISI 52100 steel and attributed to the change in the hardness, phase composition of the laser-cladding coating and tribochemical reactions between the laser-cladding coating and the extreme pressure and anti-wear additives.

STROLOY 503-A

Alloy Digest ◽  
1985 ◽  
Vol 34 (2) ◽  
Keyword(s):  
Ball Bearing ◽  
Heat Treating ◽  
Hypereutectoid Steel ◽  
Aisi 52100 ◽  
Aisi 52100 Steel ◽  
Made In

Abstract STROLOY 503-A is a hypereutectoid steel of bearing quality. It has through-hardening characteristics similar to those of AISI 52100 steel. Stroloy 503-A is made in accordance with ASTM A 295-84. It is used principally in ball bearing applications. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, and machining. Filing Code: SA-406. Producer or source: Babcock & Wilcox Company. See also Alloy Digest SA-281, October 1972.

scholarly journals An Experimental Investigation on Tribological Behaviour of Tire-Derived Pyrolysis Oil Blended with Biodiesel Fuel

2020 ◽  
Vol 12 (23) ◽  
pp. 9975
Author(s):  
Haseeb Yaqoob ◽  
Yew Heng Teoh ◽  
Muhammad Ahmad Jamil ◽  
Tahir Rasheed ◽  
Farooq Sher
Keyword(s):  
Alternative Fuels ◽  
Optical Microscope ◽  
Tribological Performance ◽  
Wear Scar ◽  
Wear Behaviour ◽  
Biodiesel Fuel ◽  
Pyrolysis Oil ◽  
Tribological Behaviour ◽  
Wear Scar Diameter ◽  
Environmental Consequences

The demand for alternative fuels has risen in recent years due to the economic and environmental consequences of conventional fuels. In addition to engine characteristics, i.e., performance, combustion, and emission the lubricity of the considered fuel is an important parameter for its selection. This experimental study shows the tribological performance of the tire pyrolysis oil by using the four-ball tester. Waste tire pyrolysis oil was purified by using the distillation process. The experiment was conducted over 300 s at 40, 50, 63, and 80 kg load, 1800 rpm constant speed, and 27 °C temperature of all fuels on the ASTM D2266 standard. The tribological performance of the tire pyrolysis oil was compared with the BT10 (biodiesel 90%–tire pyrolysis oil 10%) and BT20 (biodiesel 80%–tire pyrolysis oil 20%) and biodiesel. The optical microscope is used to measure the wear scar diameter and then it is examined through a scanning electron microscope. In terms of greater load-carrying capacity, tire pyrolysis oil shows better anti-wear behaviour compared to biodiesel fuel. The wear scar diameter of BT10, BT20, and tire pyrolysis oil was 23.99%, 8.37%, and 32.62%, respectively, lower than the biodiesel fuel at 80 kg load. The SEM micrographs revealed that tire pyrolysis oil and BT10 displayed lower wear as compared to counterparts. Finally, it is concluded that BT10 is the most suitable fuel in terms of tribological performance.

Ultra-Mild Wear of Al2O3 Fibre and Particle Reinforced Magnesium Matrix Composites

2012 ◽  
Vol 445 ◽  
pp. 503-508 ◽  
Author(s):  
A. Banerji ◽  
Henry Hu ◽  
A.T. Alpas
Keyword(s):  
Wear Behaviour ◽  
Matrix Composites ◽  
Material Loss ◽  
Magnesium Matrix Composites ◽  
Mild Wear ◽  
Aisi 52100 ◽  
Aisi 52100 Steel ◽  
Pin On Disk ◽  
Worn Surface ◽  
Sliding Wear Behaviour

Sliding wear behaviour of Mg alloy AM60 reinforced with Al2O3 fibers and particles, i.e, AM60-9% (Al2O3)f and AM60-(9% (Al2O3)f + 4% (Al2O3)p) have been studied by performing boundary lubricated pin on disk tests against AISI 52100 steel counterface under low loads (1.0-5.0 N). The results showed that the material loss from Mg composites tested under 1.0 N and 2.0 N loads was negligible. Under 5.0 N load and after 1.0×105 sliding cycles, AM60-9% (Al2O3)f showed increased volumetric loss whereas under the same conditions AM60-(9% (Al2O3)f + 4% (Al2O3)p) continued to protect the Mg-matrix from damage by the counterface as Al2O3 fibre+particle height remained exposed over the Mg matrix by 1.8 μm and acted as load bearing elements. Transfer of Fe particles to the worn surface of Mg composites resulting from extensive counterface damage due to abrasion by hard Al2O3 fibres and particles was also detected.

scholarly journals Tribological Behaviour of Neem Oil with and without Graphene Nanoplatelets Using Four-Ball Tester

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
B. Suresha ◽  
G. Hemanth ◽  
Apurva Rakesh ◽  
K. M. Adarsh
Keyword(s):  
Friction And Wear ◽  
Graphene Nanoplatelets ◽  
Wear Behaviour ◽  
Extreme Pressure ◽  
Neem Oil ◽  
Tribological Behaviour ◽  
Wear Scar Diameter ◽  
Pit Formation ◽  
Pressure Test ◽  
Ball Surface

The present work was aimed to study the friction and wear behaviour of graphene nanoplatelets (GNPs) under extreme pressure conditions as an anti-weld additive for neem oil. The effect of neem oil, blended with various loading of GNPs on the friction and wear characteristics has been investigated. From the experimental results, it was found that 1 wt.% of GNPs in neem oil showed the least coefficient of friction and smoother wear scar diameter. The extreme pressure test was performed on neem oil with and without GNPs as per ASTM standards. The extreme pressure test results indicated the improvement in seizure load of neem oil by 27.8% at 0.5 wt.% of GNPs as compared to pure neem oil. Optical microscopy of worn steel ball surface revealed the pit formation and the formation of wedge cutting edge in GNPs modified neem oil.

Performance of polymeric viscosity improver as bio-lubricant additives

2019 ◽  
Vol 10 (5) ◽  
pp. 634-643 ◽  
Author(s):  
Muhammad Arif Dandan ◽  
Syahrullail Samion ◽  
Nurul Farhanah Azman ◽  
Fazila Mohd Zawawi ◽  
Mohd Kameil Abdul Hamid ◽  
...  
Keyword(s):  
Palm Kernel ◽  
Ethylene Vinyl Acetate ◽  
Optical Microscope ◽  
Wear Behaviour ◽  
Extreme Pressure ◽  
Content Type ◽  
Positive Results ◽  
Acetate Copolymer ◽  
Eva Copolymer ◽  
Reducing Properties

Purpose The purpose of this paper is to study the influence of polymeric viscosity improver on the tribological performance of palm kernel methyl ester (PKME). Design/methodology/approach Tribological performances of the PKME added with the various concentration of ethylene-vinyl acetate copolymer (EVA) were evaluated using four-ball tribotester under extreme pressure condition. The morphologies of the worn surfaces were observed by using the optical microscope. Findings The addition of polymeric viscosity improver (EVA copolymer) has produced positive results towards the tribological properties of PKME. In total, 4 per cent of EVA copolymer is found as the optimum concentration by improving the friction reducing properties and anti-wear behaviour due to the formation of film thickness between two rubbing surfaces. Originality/value This work might contribute to the development of vegetable oils as a new source of environmental-friendly lubricant.

VASCO M-50

Alloy Digest ◽  
1974 ◽  
Vol 23 (11) ◽  
Keyword(s):  
Elevated Temperature ◽  
Physical Properties ◽  
Surface Treatment ◽  
High Speed ◽  
High Speed Steel ◽  
High Strength ◽  
Heat Treating ◽  
High Load ◽  
Aisi 52100 ◽  
Aisi 52100 Steel

Abstract VASCO M-50 is a hardenable (martensitic), low-alloy high-speed steel developed primarily for high-strength, high-load components (such as bearings and gears) designed for elevated-temperature service. It may be used at temperatures up to 600 F; this is in contrast to AISI 52100 steel which may be used up to only 350 F. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-278. Producer or source: Teledyne Vasco.

scholarly journals Study on the Influence of the Ball Material on Abrasive Particles’ Dynamics in Ball-Cratering Thin Coatings Wear Tests

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 668
Author(s):  
Gustavo Pinto ◽  
Andresa Baptista ◽  
Francisco Silva ◽  
Jacobo Porteiro ◽  
José Míguez ◽  
...  
Keyword(s):  
Aisi 304 ◽  
Thin Coatings ◽  
Iron And Steel ◽  
Test Configuration ◽  
Abrasive Particles ◽  
Aisi 52100 ◽  
Aisi 304 Steel ◽  
Aisi 52100 Steel ◽  
Steel Balls ◽  
Particles Dynamics

Micro-abrasion remains a test configuration hugely used, mainly for thin coatings. Several studies have been carried out investigating the parameters around this configuration. Recently, a new study was launched studying the behavior of different ball materials in abrasive particles’ dynamics in the contact area. This study intends to extend that study, investigating new ball materials never used so far in this test configuration. Thus, commercial balls of American Iron and Steel Institute (AISI) 52100 steel, Stainless Steel (SS) (AISI) 304 steel and Polytetrafluoroethylene (PTFE) were used under different test conditions and abrasive particles, using always the same coating for reference. Craters generated on the coated samples’ surface and tracks on the balls’ surface were carefully observed by Scanning Electron Microscopy (SEM) and 3D microscopy in order to understand the abrasive particles’ dynamics. As a softer material, more abrasive particles were entrapped on the PTFE ball’s surface, generating grooving wear on the samples. SS AISI 304 balls, being softer than the abrasive particles (diamond), also allowed particle entrapment, originating from grooving wear. AISI 52100 steel balls presented particle dynamics that are already known. Thus, this study extends the knowledge already existing, allowing to better select the ball material to be used in ball-cratering tests.

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