Effects of fly ash content on the friction-wear performance of bronze-based brake lining materials produced by the hot-pressing method

2015 ◽  
Vol 67 (6) ◽  
pp. 612-621 ◽  
Author(s):  
Hüsamettin Kus ◽  
Duran Altiparmak
Keyword(s):  
Fly Ash ◽  
Hot Pressing ◽  
Wear Test ◽  
Ash Content ◽  
Wear Properties ◽  
Wear Performance ◽  
Pressing Method ◽  
Content Type ◽  
Lining Material ◽  
Brake Lining

Purpose – The purpose of this paper is to investigate the effect of fly ash content on the friction–wear performance of bronze-based brake lining material. Design/methodology/approach – In this study, bronze-based brake linings containing 0-12 weight per cent fly ash were produced by the hot-pressing process. The friction-wear properties of the unreinforced bronze matrix brake lining material and fly ash reinforced samples were investigated using a Chase-type friction tester. The hardness and density of the samples were also determined. The microstructures and friction surfaces of the samples were examined using scanning electron microscopy. Findings – The experimental results showed that the fly ash content significantly affects the friction-wear properties of the brake lining material. It was found that the friction coefficient increases with the increase in the fly ash content for the brake lining materials studied. Moreover, the mass losses in the wear test were lower for the brake linings containing over 4 weight per cent fly ash than unreinforced bronze-based lining material. Originality/value – This study has proven to be useful in exploring fly ash particles as low cost reinforcing materials in improving the friction–wear performance of bronze-based brake lining material. In addition, the use of fly ash particles in the manufacture of brake lining materials contributes to reducing the production cost of brake linings and to a sustainable environment.

Friction and wear properties of friction materials containing nano/micro-sized SiO2 particles

2016 ◽  
Vol 68 (2) ◽  
pp. 259-266 ◽  
Author(s):  
Kezban Banu Sugozu ◽  
Behcet Daghan ◽  
Ahmet Akdemir ◽  
Necati Ataberk
Keyword(s):  
Friction Coefficient ◽  
Friction And Wear ◽  
Poor Performance ◽  
Wear Properties ◽  
Wear Performance ◽  
Content Type ◽  
Conventional Procedure ◽  
Friction And Wear Properties ◽  
Sio2 Particles ◽  
Brake Lining

Purpose – Among the components used for a car brake lining, the chemical and structural properties of the abrasives, jointly with the morphology and size of the particles influence the friction parameters and stability of the composite. This paper aims to investigate the effect of nano SiO2 particles in brake pads on friction and wear properties. Design/methodology/approach – In this paper, the effects of SiO2 (Silica) particles of varying size on the friction-wear properties of polymeric friction composites are investigated. Four friction composites were prepared containing (5, 10 Wt.%) micro silica (MS) particles and (5, 10 Wt.%) nano silica (NS) particles. The samples were produced by a conventional procedure for a dry formulation following dry-mixing, pre-forming and hot pressing. Friction and wear characteristics of the specimens against to a disk made of cast iron were studied. Friction coefficient, specific wear rate and hardness of specimens were obtained. Detailed examinations on the worn surface were analyzed using a scanning electron microscope. Findings – The results of test showed that the inclusion of nano silicon carbide (SiC) powder improved the wear performance significantly. Friction coefficient (μ) of NS samples was higher than the MS samples. Micro-SiC showed poor performance and μ. High wear performance was exhibited in materials containing 5 Wt.% NS and 10 Wt.% NS. Originality/value – This paper emphasizes the importance of nano-composites in the automotive industry and helps to industrial firms and academicians working on wear of materials.

Wear performance and its online monitoring of the semimetal brake lining for automobiles

2014 ◽  
Vol 66 (1) ◽  
pp. 100-105 ◽  
Author(s):  
Yan Yin ◽  
Jiusheng Bao ◽  
Lei Yang
Keyword(s):  
Experimental Data ◽  
Wear Rate ◽  
Monitoring System ◽  
Online Monitoring ◽  
Electronic Control Unit ◽  
Wear Performance ◽  
Content Type ◽  
Disc Brakes ◽  
Wear Monitoring ◽  
Brake Lining

Purpose – In order to improving the braking reliability and assuring the driving safety of automobiles, this paper aims at the wear performance and its online monitoring of its brake lining. Design/methodology/approach – The wear performance of the semimetal brake lining for automobiles was investigated on a self-made braking tester for disc brakes. Based on the experimental data, an intelligent forecasting model for the wear rate was established by the artificial neural network (ANN) technology. And by taking it as a core, an online braking wear monitoring system for automobiles was designed. Findings – It is shown that the wear rate rises obviously with the increasing of both initial braking velocity and braking pressure. By the contrast, the initial braking velocity affects the wear rate more seriously. The ANN model trained by the experimental data shows favorable capability for predicting of the wear rate. The big forecasting errors at high velocity and heavy load should be attributed to the jumping of the wear rate at this period. Based on the existed sensors and electronic control unit system of automobiles, the online braking wear monitoring system can be established easily by the ANN technology. Originality/value – A self-made braking tester for disc brakes was used to test the wear performance, which can simulate better the actual disc braking conditions than the standard pin-on-disc friction tester. An online braking wear monitoring system was designed to help improving the braking reliability and safety of automobiles.

The effect of colemanite on the friction performance of automotive brake friction materials

2016 ◽  
Vol 68 (1) ◽  
pp. 92-98 ◽  
Author(s):  
ilker Sugozu ◽  
ibrahim mutlu ◽  
Kezban Banu Sugozu
Keyword(s):  
Friction Coefficient ◽  
Friction And Wear ◽  
Negative Effects ◽  
Wear Performance ◽  
Industrial Firms ◽  
Friction Materials ◽  
Content Type ◽  
Friction Performance ◽  
Brake Lining ◽  
Automotive Brake

Purpose – The purpose of this paper is to investigate use of colemanite (C) upon friction and wear performance of automotive brake lining. Brake lining production with the boron product colemanite addition and braking characterization investigated for development of non-asbestos organic (NAO) brake lining because of negative effects on human health and environmental hazard of asbestos containing linings. During the braking, brake lining is warmed up extremely due to friction, and the high temperature causes to decreasing of breaking performance. Colemanite has high melting temperature, and this makes this material valuable for brake lining. Design/methodology/approach – This study investigated the effect of colemanite (C) upon friction and wear performance of automotive brake lining. Based on a simple experimental formulation, different amounts of boron product colemanite were used and then evaluated using a friction assessment and screening test. In these specimens, half of the samples (shown with H indices) were heat treated in 4 h at 180°C temperature. Friction coefficient, wear rate and scanning electron microscope for friction surfaces were used to assess the performance of these samples. Findings – The results of test showed that colemanite can substantially improve properties of friction materials. The friction coefficient of friction materials modified with colemanite varies steadily with the change of temperature, and the wearing rate of friction materials is relatively low by using colemanite. Heat treatment-applied samples (CH) have provided a higher and stable friction coefficient. These results indicate that colemanite has ideal application effect in various friction materials. Originality/value – This paper fulfils an identified information and offers practical help to the industrial firms working with brake lining and also to the academicians working on wear of materials. Parallel results have been presented between previously reported and present study, in view of brake characteristics and wear resistance. Use of the lower cost and productive organic sources of material are the main improvement of the present study.

scholarly journals Effect of In-situ Tribo-oxide-layer on the Non-lubricated Tribological Behaviors of LM27/ SiCp Composites

2021 ◽  
Author(s):  
Pardeep Kumar Nagpal ◽  
Suresh Kumar ◽  
Ranvir Singh Panwar ◽  
J. D. Sharma ◽  
Neeru Singla ◽  
...  
Keyword(s):  
Oxide Layer ◽  
Contact Region ◽  
Wear Test ◽  
Stir Casting ◽  
Friction Material ◽  
Wear Performance ◽  
Pin On Disc ◽  
Fine Size ◽  
Brake Lining

In this study, an investigation on the influence of In-situ tribo-oxide-layer on non-lubricated tribological behaviours of LM27/SiCp composites was carried out at different applied loads. The variations in wear performance and microstructure of brake lining friction material (LM27) with the addition of different amounts and sizes of SiCp are explored. For this purpose, LM27/SiCp composite materials were manufactured by stir casting route varying the amount of particle reinforced from 3wt.% to 12wt.% with a different size range (fine: 1-20µm and coarse: 106-125µm). Non-lubricated dry wear tests of LM27/SiCp composites samples were trialled at different loads from 9.8N to 49N by using a pin-on-disc machine system. At a contact pressure of 0.2-1 MPa, LM27/SiCp composites with 12wt.% reinforcement showed a lower coefficient of friction than other composites. In-situ formation of oxide layers on the contact region of the specimen supports the self-lubrication during the wear test, which is responsible for better wear performance of LM27/SiCp composites. However, these study portraits that composite with 12wt. % fine size SiCp exhibits better wear performance in comparison to the other developed composites.

Optimization of wear parameters of Mg-(5.6Ti+3Al)-2.5B4C composite

2019 ◽  
Vol 72 (4) ◽  
pp. 503-508 ◽  
Author(s):  
Sathish S. ◽  
Anandakrishnan V. ◽  
Gupta Manoj
Keyword(s):  
Peer Review ◽  
Wear Mechanisms ◽  
Scientific Evidence ◽  
Wear Test ◽  
Dry Sliding Wear ◽  
Metal Composite ◽  
Wear Performance ◽  
Content Type ◽  
Mechanical And Tribological Properties ◽  
Metal Metal

Purpose The purpose of this study is to analyse and optimize the wear parameters of magnesium metal-metal composite. Materials with lesser weight attract both the researcher and industrialists, as it exhibits the performance improvement in the automotive and aerospace industries. The enrichment of mechanical and tribological properties of the existing magnesium focussed the development of new metal–metal composite. Design/methodology/approach Metal–metal composite with magnesium matrix was synthesized through the disintegrated melt deposition technique with the addition of titanium, aluminium and boron carbide particles. The wear performance of the composite was experimented with the dry sliding wear test by considering load, sliding velocity and sliding distance. Findings The wear rate of the composite is analysed statistically, and the significance of wear parameters on the wear performance of metal–metal composite is observed. The worn pin surface and the wear debris collected during the wear experiments were exposed to the microscopy analysis to seize the dominating wear mechanisms. Originality/value The wear performance of the developed magnesium composite was analysed and discussed in detail with the support of scientific evidence, i.e. worn surface and debris analysis express the wear mechanisms. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2019-0326/

Investigation on microstructures, mechanical and wear properties of Al 390/ZrO2 composite materials fabricated by P/M method

2020 ◽  
Vol 17 (1) ◽  
pp. 149-166
Author(s):  
Karthikeyan S ◽  
Karunanithi R ◽  
Ashoke Ghosh
Keyword(s):  
Wear Resistance ◽  
Wear Test ◽  
Matrix Alloy ◽  
Sem Analysis ◽  
High Wear Resistance ◽  
Wear Properties ◽  
Content Type ◽  
The Matrix ◽  
Pin On Disc ◽  
A390 Alloy

PurposeAluminium is the most proficiently and commonly used metal due to its desirable physical, chemical and mechanical properties. When Aluminium reinforced with hard ceramic particles, shows increased strength and good corrosion resistant and wear resistant qualities. In the present investigation, A390 + X vol. % Zro2 (X = 5, 10 and 15) composites have been fabricated through P/M technique.Design/methodology/approachAfter that the microstructural properties are tested by scanning electron microscope (SEM) analysis wear test is performed using pin-on-disc machine.FindingsThe wear conditions of applied load 30N and sliding velocity 1 m/s and track distance 1000m was followed. A390 + 15% Zro2 of surface of the composites unveiled greater hardness when compared with A390 alloy.Originality/valueA390 + 15% Zro2 exhibited superior wear resistance than that of the matrix alloy. Thus the material proves as an excellent solution for applications that requires high wear resistance.

Wear performance of Al-TiC composite at elevated temperature

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Eshan Agrawal ◽  
Vinod Tungikar
Keyword(s):  
Elevated Temperature ◽  
Wear Rate ◽  
Coefficient Of Friction ◽  
Elevated Temperatures ◽  
Centrifugal Casting ◽  
Wear Test ◽  
Heating Chamber ◽  
Wear Performance ◽  
Content Type ◽  
Pin On Disc

Purpose Aluminium matrix composites are subjected to wear as well as higher temperature applications such as pistons, cylinder heads and blocks for car engines. Therefore, it is important to evaluate the performance of aluminium metal matrix composite at elevated temperature. Design/methodology/approach In the present work wear performance of Al-TiC composite with 7.5% reinforcement of TiC powder is carried out at elevated temperature. The composite specimens are prepared with the help of centrifugal casting method to get the large segregation of reinforcement on the outer layer of the composite which is subjected to wear. Taguchi method is used for preparing design of experiments. Findings The wear test is performed on DUCOM pin on disc setup having the heating chamber facility. The results of wear test are analysed with the help of MINITAB 19 software. The results show that temperature has dominant effect on the wear rate. The mathematical model through regression is predicted for wear rate and coefficient of friction. The study of worn-out surface is performed with the help of scanning electron microscope. The micrographs show that the type of wear is changes from abrasive to severe wear and some delamination. Originality/value The experiments are conducted as per ASTM standards. The results give the mathematical equation for wear rate and coefficient of friction at elevated temperatures.

Impact of brass contents on thermal, friction and wear properties of brake linings composites

2018 ◽  
Vol 19 (1) ◽  
pp. 105
Author(s):  
Amira Sellami ◽  
Mohamed Kchaou ◽  
Reçai Kus ◽  
Jamal Fajoui ◽  
Riadh Elleuch ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Copper Alloy ◽  
Friction And Wear ◽  
Wear Test ◽  
Friction Material ◽  
Wear Properties ◽  
Braking Performance ◽  
Complex Formulation ◽  
Alloy Particles ◽  
Brake Lining

Automotive brake lining materials are composite materials of very complex formulation, highly heterogeneous. They help to carry out the desired combination of braking performance properties. Obviously, it requires that the friction material exhibits good complementarities and adequate combination of physico-chemical, thermal properties that act synergistically to provide the braking performance which should be adjusted by the addition of metallic fillers. The aim of this work is to study the role of one of the copper alloy particles, namely brass, on friction and wear. For this purpose, the experimental approach is based on the development of a simplified formulation. Three derived composites were developed in the laboratory by the addition 1.5 wt.%, 3 wt.% and 4.5 wt.% of brass. It is shown that addition of copper alloy particles increased thermal properties. Wear test results show that brass contributes to friction and wear mechanisms from a quantity introduced in the formulation equal to 4.5 wt.%. In fact, given its large size, it acts as primary plates serving as supports for the formation and expansion of plates necessary to enhance the stability of friction coefficient. Conversely, when adding an amount less than 4.5%, brass particles are generally all removed from the matrix implying a higher source flow of third-body wear.

Wear behaviour of copper/carbon nanotubes

2017 ◽  
Vol 69 (3) ◽  
pp. 342-347 ◽  
Author(s):  
Nor Shamimi Shaari ◽  
Jamaliah Md Said ◽  
Aidah Jumahat ◽  
Muhammad Hussain Ismail
Keyword(s):  
Carbon Nanotubes ◽  
Wear Test ◽  
Hardness Test ◽  
Copper Matrix ◽  
Wear Behaviour ◽  
Wear Depth ◽  
Wear Properties ◽  
Test Analysis ◽  
Content Type ◽  
Pure Cu

Purpose The purpose of this paper is to study the wear behaviour of copper matrix composites reinforced with carbon nanotubes (CNTs) prepared by powder metallurgy route. Design/methodology/approach The CNTs were treated by sulphuric acid and nitric acid to deagglomerate the CNTs prior mixing with copper powder. The composites comprised 0 to 4 Vol.% pristine CNTs (PCNTs) and also after acid-treated CNTs (ACNTs). The optimum value (pure Cu, 3 Vol.% PCNTs, 3 Vol.% ACNTs) evaluated by micro-hardness test was selected for wear test analysis. Findings The results showed that the enhancement of hardness, weight loss, coefficient of friction, wear depth and surface roughness (Ra) was due to the effect of homogenous distribution of ACNTs in Cu matrix and significant bonding compared to pure Cu and Cu-reinforced PCNTs. The scanning electron microscopy micrograph of worn surfaces and wear depth of the specimens also showed that the addition of ACNTs in Cu resulted in better wear performances. Originality/value CNTs were treated prior processing to improve hardness and wear properties of Cu/CNTs composites.

Tribological properties of brake friction materials containing fly ash

2018 ◽  
Vol 70 (5) ◽  
pp. 902-906 ◽  
Author(s):  
Banu Sugözü
Keyword(s):  
Fly Ash ◽  
Surface Hardness ◽  
Good Alternative ◽  
Brake Disc ◽  
Content Type ◽  
Hardness Tester ◽  
Dry Mixing ◽  
Commercial Applications ◽  
Brake Lining ◽  
The Cost

Purpose The purpose of this study is to investigate the potential of fly ash in automotive brake lining materials. Design/methodology/approach Three brake linings containing fly ash (36, 41 and 46 Wt.%) were designed and produced by dry-mixing, pre-forming and hot pressing. The surface hardness of all brake lining samples was measured by using Brinell hardness tester. The density of the specimens was determined based on Archimedean principle in water. The friction and wear characteristics of the brake lining samples were determined using a real brake disc-type tester. Detailed examinations on the worn surface were analyzed using a scanning electron microscopy. Findings Fly ash can be good alternative as space filler to reduce the cost for brake lining. Originality/value The present study has successfully demonstrated that there is a high potential for commercial applications of brake linings including fly ash as a filler.

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