Abrasive Wear Mechanism of Microwave-Assisted Compression Molded Kenaf/HDPE Composite

2020 ◽  
Vol 142 (10) ◽  
Author(s):  
Manoj Kumar Singh ◽  
Sunny Zafar
Keyword(s):  
Abrasive Wear ◽  
Wear Mechanism ◽  
Weight Fraction ◽  
Kenaf Fiber ◽  
Microwave Assisted ◽  
Pin On Disc ◽  
Sliding Distance ◽  
Wear Tests ◽  
Abrasive Paper ◽  
Counter Surface

Abstract The present work aims to study the abrasive wear of kenaf/high-density polyethylene (HDPE) composites with 20% weight fraction reinforcement of the kenaf fiber. A unique technique of the microwave-assisted compression molding (MACM) was used to fabricate the composites. The pin-on-disc setup was used for two-body abrasive wear, in which the kenaf/HDPE composite acts as a pin and the abrasive paper (P100) acts as a counter surface. Two-body abrasive wear tests were conducted for HDPE and kenaf/HDPE composites at normal loads of 10 N, 20 N, and 30 N and the sliding speed of 1 m/s, 2 m/s, and 3 m/s within 100 m of sliding distance. Tribofilm formation was observed at higher values of load and speed, which helps in reducing the wear-rate of the composites. Wear mechanism of the kenaf/HDPE composite is discussed in detail and supported with scanning electron microscope (SEM) fractography.

Abrasive Wear Characteristics of Ni-base Self-fluxing Alloy Spraywelding Overlays

1997 ◽  
Author(s):  
Z. Ding ◽  
R. Knight ◽  
R.W. Smith
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Process Parameters ◽  
High Stress ◽  
Resistance Mechanisms ◽  
Abrasive Wear Resistance ◽  
Abrasive Medium ◽  
Hardness Tests ◽  
Pin On Disc ◽  
Wear Tests

Abstract The results of low stress, pin-on-disc and high stress grinding abrasive wear tests on coatings produced by plasma and oxy-acetylene flame spraywelding are presented. FNil5A and FNiWC35 Ni-based self-fluxing alloys were selected as typical spraywelding materials for abrasive wear resistance. The abrasive wear resistance mechanisms of welded overlays produced by various materials and processes were also characterized by hardness tests, microstructural and compositional analyses, and through analysis of the effect of different kinds of abrasive on the wear resistant of Ni-base self-fluxing spraywelding overlays. Results showed that FNiWC35 overlays exhibited improved resistance under low stress abrasion, but the relative wear resistances of FNiWC35 and FNil5A still depended primarily on the type and hardness of the abrasive medium used. For the same material, the abrasive wear resistance of oxyacetylene flame sprayed overlays was higher than that produced by plasma spraywelding. The wear resistance of the plasma spraywelding overlays depended not only on the material, but also strongly on the spraywelding process parameters.

Some Investigations of Wet Sliding Behaviour of Al - SiC Particulate Composites

2011 ◽  
Vol 383-390 ◽  
pp. 2759-2763
Author(s):  
A. Mishra
Keyword(s):  
Weight Fraction ◽  
Particulate Composites ◽  
Wear Behaviour ◽  
Powder Size ◽  
Pure Aluminium ◽  
Wear Rates ◽  
Test Conditions ◽  
Percentage Weight ◽  
Pin On Disc ◽  
Sliding Distance

Pure Aluminium mixed with SiC powder (size 70 micron) in 5, 10 , 15 and 20 percentage weight fractions have been stir cast and test samples have been made. The samples have been machined to produce 8 mm diameter pins for testing in Pin on Disc wear monitor under water lubricated condition. The wear behaviour of these samples has been studied by plotting the wear rates against sliding distance and velocity. The co efficient of friction has been found out under varying load and varying time. The results were compared with that of pure aluminium under similar test conditions. It has been found that the sample having 20% weight fraction of SiC with highest hardness has maximum wear resistance under such conditions.

Tribological Behavior of Laser-Cladding Ni60 and Co-Cr-W Coatings at Elevated Temperature

2007 ◽  
Vol 353-358 ◽  
pp. 878-881 ◽  
Author(s):  
Zhen Bing Cai ◽  
Min Hao Zhu ◽  
Xiu Zhou Lin ◽  
Ji Liang Mo ◽  
Zhong Rong Zhou
Keyword(s):  
Elevated Temperature ◽  
Abrasive Wear ◽  
Laser Cladding ◽  
Wear Mechanism ◽  
Sliding Wear ◽  
Metallurgical Bonding ◽  
High Oxidation Resistance ◽  
Nickel Base ◽  
Cobalt Base ◽  
Wear Tests

Nickel base Ni60 and cobalt base Co-Cr-W coatings were prepared on substrate of refractory alloy steel 4Cr14NiW2Mo by laser-cladding technology. A 2 kW transverse-flowing CO2 laser device was used for cladding alloy powder. Another Co-Cr-W coating was formed by bead welding. Under room temperature, 250 oC.and 420 oC, reciprocate sliding wear tests with a ball-on-flat contact for three coatings have been carried out. For the laser cladding coating, a good metallurgical bonding with the substrate was obtained. Different tribological behaviors of three coatings were observed. For the two Co-Cr-W coatings, the friction coefficients decreased with the increase of test temperature, and larger spot-like stripping pit and wider ploughing trenches in the wear scars were presented. The wear mechanism was the combination of abrasive wear, delamination and oxidation wear. For the Ni60 laser cladding layer, the friction coefficient hardly changed with the elevated temperature, and the wear mechanism mainly performed as abrasive wear due to its high oxidation resistance. The wear tests showed that the Ni60 clad coating had provided excellent wear resistance than Co-Cr-W layers under high temperature reciprocating sliding wear condition.

ABRASIVE WEAR BEHAVIOUR OF COPPER-SiC AND COPPER-SiO2 COMPOSITES

2013 ◽  
Vol 22 ◽  
pp. 416-423 ◽  
Author(s):  
TEJAS UMALE ◽  
AMARJIT SINGH ◽  
Y. REDDY ◽  
R. K. KHATITRKAR ◽  
S. G. SAPATE
Keyword(s):  
Abrasive Wear ◽  
Wear Debris ◽  
Copper Matrix ◽  
Wear Behaviour ◽  
Wear Volume ◽  
Matrix Composites ◽  
Debris Particles ◽  
Pin On Disc ◽  
Abrasive Wear Behaviour ◽  
Sliding Distance

The present paper reports abrasive wear behaviour of copper matrix composites reinforced with silicon carbide and silica particles. Copper – SiC (12%) and Copper-SiO2 (9%) composites were prepared by powder metallurgical technique. Metallography, image analysis and hardness studies were carried out on copper composites. The abrasive wear experiments were carried out using pin on disc apparatus. The effect of sliding distance and load was studied on Copper – SiC (12%) and Copper-SiO2 (9%) composites. The abrasive wear volume loss increased with sliding distance in both the composites although the magnitude of increase was different in each case. Copper – SiC (12%) composites exhibited relatively better abrasion resistance as compared to and Copper-SiO2 (9%) composites. The abraded surfaces were observed under scanning electron microscope to study the morphology of abraded surfaces and operating wear mechanism. The analysis of wear debris particles was also carried out to substantiate the findings of the investigation.

Effect of load on the tribological properties of Si3N4-hBN composite ceramics sliding against Si3N4

2018 ◽  
Vol 70 (9) ◽  
pp. 1699-1705
Author(s):  
Dong Qiang Gao ◽  
Rui Wang ◽  
Wei Chen
Keyword(s):  
Abrasive Wear ◽  
Tribological Properties ◽  
Wear Mechanism ◽  
Friction And Wear ◽  
Water Lubrication ◽  
Content Type ◽  
Lubrication Film ◽  
Pin On Disc ◽  
Lubrication Condition ◽  
Worn Surface

Purpose The effect of the load on the tribological properties of Si3N4-hBN sliding against Si3N4 were investigated under dry and water lubrication condition. Design/methodology/approach Using a MMU-5G type pin-on-disc friction and wear tester. Findings Under the dry friction, the wear mechanism was dominated by ploughing and abrasive wear, and the contact status was elastic contact under the load less than 25 N. With the increase of the load, the friction coefficient decreased; the main wear mechanism was fatigue fracture, and the contact status turned into plastic contact. Under water lubrication, effective lubrication film could be produced on the worn surface, and it had a function of fluid lubrication under the load less than 15 N. With the increase of the load, the pin and the disc came into direct contact, and the friction and wear of the pairs were aggravated; the wear mechanism changed from chemical wear into abrasive wear and brittle spalling. Originality/value The study on the effect of the load on the tribological properties of Si3N4-hBN sliding against Si3N4 was investigated under dry and water lubrication condition in the way of contact stress.

Abrasive Wear Performance of CNT/PP Composites

2014 ◽  
Vol 592-594 ◽  
pp. 1262-1266
Author(s):  
A. Johnney Mertens ◽  
S. Senthilvelan
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Friction Mechanism ◽  
Wear Performance ◽  
Weight Percentage ◽  
Multi Walled Carbon Nanotube ◽  
Twin Screw ◽  
Pin On Disc ◽  
Disc Configuration ◽  
Abrasive Paper

In this work, abrasive wear performance of multi-walled carbon nanotube (CNT) reinforced polypropylene (PP) has been studied. Various weight percentage of CNT/PP nanocomposites were prepared through melt intercalation with the aid of twin screw extruder. Prepared composites were subjected to sliding wear against silicon carbide abrasive paper with the aid of pin-on-disc configuration. Worn out surface morphology were observed under microscope and non-contact profilometer to understand the wear mechanism. Since the dominant friction mechanism observed to be is ploughing, no lubrication effect of CNT was observed. CNT/PP composite exhibits inferior wear resistance than unfilled PP due to its brittleness. With increased CNT, wear resistance found to decreases.

Comparative Study of Effect of Cryogenics Heat Treatment and Case Hardening on the Wear Property of 20MnCr5

2015 ◽  
Vol 798 ◽  
pp. 435-439
Author(s):  
S.D. Ambekar ◽  
Sandeep Kadam ◽  
S.A. Sonawane
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Comparative Study ◽  
Abrasive Wear ◽  
Alloy Steel ◽  
Case Hardening ◽  
Wear Property ◽  
Sliding Velocity ◽  
Pin On Disc ◽  
Sliding Distance

This research is limited to study of wear resistance of 20MnCr5 (SAE 5120) alloy steel hardened by Carburizing and Cryogenics, which has wide application in industries like gears, shafts, bearings, pins etc. Cryogenics is used as a supplement treatment that is performed after carburizing. The abrasive wear study is performed on pin-on-disc tribotester. The counterface disc was kept same for both the heat treatments (carburizing and cryogenics). Sliding velocity of 0.8 m/s, 1.6 m/s, 2.4 m/s, Sliding Distance of 1200 m, 1400 m, 1600 m and Load of 3 kg, 4 kg and 5 kg were used to evaluate the wear resistance.

The Effects of Applied Load on Wear Behavior of Al-Quarry Dust Particle Composite Disc Sliding against Automobile Brake Material

2014 ◽  
Vol 592-594 ◽  
pp. 1357-1361 ◽  
Author(s):  
M. Ramesh ◽  
T. Karthikeyan ◽  
A. Kumaravel ◽  
C. Kumaari
Keyword(s):  
Wear Rate ◽  
Applied Load ◽  
Wear Behavior ◽  
Dust Particles ◽  
Dry Sliding Wear ◽  
Sem Image ◽  
Pin On Disc ◽  
Sliding Distance ◽  
Wear Tests ◽  
Quarry Dust

The wear behavior of aluminium alloy (A356) reinforced with 5 wt. % of quarry dust particles composite disc was sliding against automobile brake friction lining pin was investigated. Dry sliding wear studies were investigated in pin-on-disc apparatus. The wear tests were carried out range of applied load 20 to 60 N and constant sliding velocity (0.5 m/s) under sliding distance of 500 m. The wear behavior of aluminium metal matrix composite (AMC) has been compared with the commercially used 25 grade Gray Cast Iron disc (GCI).The results showed that the wear rate of AMC disc decreased with increasing the applied load. However the wear rate of AMC disc with respective pin decreased with increasing the applied load. The coefficient friction increased with increasing the applied load. The scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDAX) used to investigate the disc and pin. The wear debris was analyzed by SEM image.

Abrasion performance of the scraper conveyor chute under complex working conditions

2021 ◽  
pp. 135065012199175
Author(s):  
Rui Xia ◽  
Xuewen Wang ◽  
Bo Li
Keyword(s):  
Working Conditions ◽  
Wear Mechanism ◽  
Normal Load ◽  
Single Factor ◽  
Operational Parameters ◽  
Scraper Conveyor ◽  
Pin On Disc ◽  
Predict Model ◽  
Sliding Distance ◽  
Simultaneous Variation

In the coal mine transportation, the scraper conveyor chute is badly worn. However, the abrasion performance has not been well documented. In this study, the chute was wear tested under a single factor using a modified pin-on-disc apparatus, including normal load, sliding distance, bulk coal characteristics (water content, gangue content), and chute material. Experiments were also carried out with a simultaneous variation of these factors. Generally speaking, the influence of coal characteristics on the chute wear was obviously higher than that of normal load and sliding distance. An improved wear predict model was obtained taking the operational parameters and bulk coal characteristics into account. The wear mechanism involved micro-ploughing, corrosion, adhesion, and fatigue peeling.

Dry Sliding Wear Behavior of Ti-6Al-4V Alloy

2015 ◽  
Vol 830-831 ◽  
pp. 333-336 ◽  
Author(s):  
M. Ananda Jothi ◽  
S. Ramanathan
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Energy Dispersive Spectrometer ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Wear Rates ◽  
Pin On Disc ◽  
Marine Applications ◽  
Sliding Distance ◽  
Wear Tests

Titanium and its alloys exhibit a unique combination of physical and corrosion resistance properties which make them ideal materials for space flight engine component such as disks and blades of compressor, marine applications, chemical industries and many bio medical applications. However the use of these materials is limited due to its poor tribological properties. Dry sliding wear tests were performed on Ti-6Al-4V using a pin-on-disc (EN31 steel) configuration. Wear rates were measured with different load and sliding velocity at a constant sliding distance. Microstructures of worn surfaces were characterized by scanning electron microscope (SEM) and energy dispersive spectrometer (EDS).

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