Effects of Concentration of Alkaline Treated SF on the Tribological Properties of POM Composites Filled with LDPE and Sisal Fibers

2011 ◽  
Vol 415-417 ◽  
pp. 94-99
Author(s):  
Ding Han Xiang ◽  
Wen Juan Li ◽  
Jiao Ling Ma
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Impact Test ◽  
Adhesive Wear ◽  
Wear Test ◽  
Alkaline Treatment ◽  
Mechanical And Tribological Properties ◽  
Naoh Solution ◽  
Sisal Fibers ◽  
Test Impact

Polyoxymethylene (POM) composites filled with low-density polyethylene (LDPE) and sisal fibers (SF) were prepared by extrusion and injection molding. Sisal fibers were treated by various concentrations of NaOH solution to improve the poor compatibility between SF and matrix. Fourier transform infrared spectroscopy (FTIR) analysis and scanning electron microscope (SEM) test were used to confirm the surface treatment. The effects of SF alkaline treatment on the mechanical and tribological properties of POM composites were determined by using tensile test, impact test and friction and wear test. The worn surfaces of composites were investigated by SEM. Results showed that the composite filled with 12.5% NaOH treated SF exhibited the optimal mechanical and tribological properties among the all composites. The major wear mechanism of the composites was adhesive wear and abrasive grain wear.

Self-Lubricating and Wear Resistant Epoxy Composites Incorporated With Microencapsulated Wax

2014 ◽  
Vol 81 (7) ◽  
Author(s):  
N. W. Khun ◽  
H. Zhang ◽  
C. Y. Yue ◽  
J. L. Yang
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Normal Load ◽  
Wear Test ◽  
Epoxy Composites ◽  
Wear Resistant ◽  
Working Parameters

Self-lubricating and wear resistant epoxy composites were developed via incorporation of wax-containing microcapsules. The effects of microcapsule size and content and working parameters on the tribological properties of epoxy composites were systematically investigated. The incorporation of microcapsules dramatically decreased the friction and wear of the composites from those of the epoxy. The increased microcapsule content or the incorporation of larger microcapsules decreased the friction and wear of the epoxy composites due to the larger amount of released wax lubricant via the rupture of microcapsules during the wear test. The friction of the composites decreased with increased normal load as a result of the promoted wear of the composites and the increased release of the wax lubricant.

Influence of the particle size on the physical, mechanical and tribological properties of composites for brake pads

2021 ◽  
pp. 36-40
Author(s):  
F.F. Yusubov
Keyword(s):  
Particle Size ◽  
Composite Materials ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Phenol Formaldehyde ◽  
Environmentally Friendly ◽  
Brake Pads ◽  
Mechanical And Tribological Properties ◽  
Pin On Disk ◽  
Properties Of Composites

Tribotechnical indicators of environmentally friendly frictional composite materials with phenol-formaldehyde matrix are studied. Friction tests were carried out on a MMW-1 vertical tribometer according to the pin-on-disk scheme. Keywords: brake pads, composites, friction and wear, plasticizers, degradation, porosity. [email protected]

scholarly journals Effects of Waste Eggshells addition on Microstructures, Mechanical and Tribological Properties of Green Metal Matrix Composite

2019 ◽  
Vol 26 (1) ◽  
pp. 423-434
Author(s):  
Mohammed T. Hayajneh ◽  
Mohammed A. Almomani ◽  
Mu’ayyad M. Al-Shrida
Keyword(s):  
Compressive Strength ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Tribological Properties ◽  
Metal Matrix ◽  
Wear Test ◽  
Matrix Composites ◽  
Mechanical And Tribological Properties ◽  
Negative Results ◽  
Chicken Eggshell

AbstractChicken eggshell (Es) waste is an industrial byproduct, and its disposal constitutes a severe environmental risk. Eggshell is a new engineering reinforcement retaining excellent properties such as low density, renewable, eco-friendly, and high thermal stability. The current research aims to study the effects of eggshell particles addition on microstructures, mechanical and tribological properties of aluminium/eggshell green metal matrix composites (MMCs). In the present work Al–Es metal matrix composite is produced by powder metallurgy processes. SEM with EDX and XRD were used to examine the microstructures and the compounds that arise during the sintering process of the produced composites. Six tests were conducted on the produced samples including; dry wear test, micro Vickers hardness, and ultimate compressive strength. The results showed that the addition of 3 wt. % of eggshell improved wear resistance (65%), compressive strength (40%) and hardness (15%). At 6 and 9 wt. % of eggshell, negative results appeared.

scholarly journals The Evaluation of Physicomechanical and Tribological Properties of Corn Straw Fibre Reinforced Environment-Friendly Friction Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-9
Author(s):  
Zhen-yu Wang ◽  
Jie Wang ◽  
Yun-hai Ma
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Corn Stalk ◽  
Wear Properties ◽  
Environment Friendly ◽  
Mechanical And Tribological Properties ◽  
Friction Tester ◽  
Mechanical And Physical Properties ◽  
Friction And Wear Properties ◽  
Worn Surface

Corn stalk fibre reinforced nonasbestos environment-friendly friction composite materials have been fabricated, and their physical, mechanical, and tribological properties are characterized. The tribological properties of the friction composites were evaluated following GB5763-2008 norms on a constant-speed-type friction tester. The experimental outcome reveals that the content of corn stalk fibre has a noteworthy impact on the tribological, mechanical, and physical properties of the friction composites. Specifically, the friction composite with a content of 7% exhibited excellent friction and wear properties. The worn surface morphology of friction composites was further investigated using a scanning electron microscope. It was found that the corn stalk fibre content greatly affected the tribological properties of the friction composites.

Mechanical and Tribological Properties of PTW/PTFE/PPS/PES Composites

2011 ◽  
Vol 284-286 ◽  
pp. 205-209 ◽  
Author(s):  
Chun Guang Long ◽  
Rong Feng Li ◽  
Yang Su ◽  
Man Yu Hua ◽  
Tai Shan Cao ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tribological Properties ◽  
Bending Strength ◽  
Adhesive Wear ◽  
Tribological Performance ◽  
Mechanical And Tribological Properties ◽  
Potassium Titanate ◽  
The Impact ◽  
Scanning Electron

Poly（phenylene-sulfide）/ Poly（ether-sulfone） polymer composites (coded as PPS/PES) reinforced by Potassium Titanate Whisker(PTW) and Polytetrafluoroethylene (PTFE) were prepared by compression molding. The effect of the filler on the mechanical and tribological properties of the PPS/PES composites was investigated, based on the evaluation of the composites’ properties and examination of the worn surfaces by means of scanning electron microscopy (SEM). Results showed that the incorporation of the PTW contributed to greatly increase the impact strength，tensile strength，and bending strength of the composites, and apparently improve its tribological performance. The composite had a best synthetical performance when the PTW content was about 20wt. %. The wear mechanism of the composites，which could be closely related to the content of PTW, gradually changed from adhesive wear to particle abrasion with the addition of PTW.

Structural and Tribological Properties of Molybdenum Disulfide/Metal Multilayered Films Deposited by Pulsed Laser Deposition

2002 ◽  
Vol 750 ◽  
Author(s):  
A. R. Phani ◽  
J. E. Krzanowski ◽  
J. J. Nainaparampil
Keyword(s):  
Pulsed Laser Deposition ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Wear Testing ◽  
X Ray Diffraction ◽  
Wavelength Dispersive Spectroscopy ◽  
Multilayered Films ◽  
Mechanical And Tribological Properties

ABSTRACTThe structural, mechanical and tribological properties of MoS2/metal and MoS2/carbide multilayer thin films have been examined in this study. The films were deposited by pulsed laser deposition of sequential layers of MoS2 and either Ti, Cr or TiC. The compositions of the films were analyzed by wavelength dispersive spectroscopy (WDS) and confirmed the presence of the deposited elements. X-ray diffraction and cross-section SEM methods were employed to characterize the films. The XRD results did not reveal the presence of separate Ti, Cr or TiC phases, and the SEM did not show any multilayer structures. From these results, it was concluded that the added metal or carbide elements are present as either a dispersed nano-structured phase or in solid solution with the MoS2. Nonetheless, friction and wear testing showed dramatic improvements over MoS2 films when tested in a humid (45% r/h) environment.

scholarly journals Effect of Austempering and Martempering on the Properties of AISI 52100 Steel

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
P. Vamsi Krishna ◽  
R. R. Srikant ◽  
Mustafa Iqbal ◽  
N. Sriram
Keyword(s):  
Heat Treatment ◽  
Treatment Process ◽  
Impact Test ◽  
Wear Test ◽  
Hardness Test ◽  
Soaking Time ◽  
Treatment Processes ◽  
Aisi 52100 ◽  
Aisi 52100 Steel ◽  
Test Impact

The mechanical properties of steel decide its applicability for a particular condition. Heat treatment processes are commonly used to enhance the required properties of steel. The present work aims at experimentally investigating the effect of austempering and martempering on AISI 52100 steel. Different tests like microstructure analysis, hardness test, impact test, and wear test are carried out after heat treatment process. It was found that annealed steel was least hard and more wear prone, while martempered steel was hardest and least vulnerable to wear. Austempered steel had the highest impact strength and it is increased with soaking time up to certain level. Least wear rate is observed in martempered sample both in abrasion and dry sliding. However, least friction coefficient is shown by annealed samples.

Friction and Wear Behavior of TiN/TiAlN Coated Ti(C,N)-Based Cermets

2008 ◽  
Vol 368-372 ◽  
pp. 1307-1309 ◽  
Author(s):  
Li Yun Zheng ◽  
Li Xin Zhao ◽  
Jing Jun Zhang
Keyword(s):  
Friction Coefficient ◽  
Sliding Wear ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Sliding Velocity ◽  
Friction And Wear Behavior ◽  
Ion Plating ◽  
The Mean

Ti(C,N)-based cermets were coated with a TiN/TiAlN coating using ion plating technology. The sliding wear test was performed for the coated cermets and the microstructure, composition and surface roughness of the coated cermets under different velocities and loads were characterized. The results showed that the friction coefficients of the coated cermets were lower than that of the neat cermets. Under the same load, the adhesion phenomenon of the counterpart materials on the specimens was improved and the mean friction coefficient increased with increasing sliding speed. Under the same sliding velocity, the average friction coefficient of the coated cermets was lower under higher load. The wear mechanisms were mainly adhesive wear and abrasive wear.

Mechanical and Tribological Properties of Ti6Al4V Hardened by Double Glow Plasma Hydrogen-Free Carbonitriding

2005 ◽  
Vol 475-479 ◽  
pp. 3951-3954 ◽  
Author(s):  
Gao Hui Zhang ◽  
Zhi Yong He ◽  
Jun De Pan ◽  
Ping Ze Zhang ◽  
Zhong Xu
Keyword(s):  
Depth Profile ◽  
Friction And Wear ◽  
Chemical Properties ◽  
Wear Test ◽  
Mechanical And Tribological Properties ◽  
C And N ◽  
Glow Plasma ◽  
Physical And Chemical ◽  
Plasma Surface Alloying ◽  
And Chemical Properties

By means of double glow plasma surface alloying process, Ti6Al4V surface was successively carbonitrided forming a layer with special physical and chemical properties. The depth profile of C and N elements showed a tendency of gradual decrease on the Ti6Al4V as well as the depth profile of its hardness. Friction and wear test indicate that the wear resistant property is increased greatly after carbonitriding the Ti6Al4V.

Research on Tribological Properties and Viscoelasticity of EPDM Rubber in the Main Drive Sealing System of Shield Machine

2021 ◽  
pp. 1-9
Author(s):  
Qi Sun ◽  
Shijie Wang ◽  
Xiaoren Lv
Keyword(s):  
Carbon Black ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Carbon Black Content ◽  
Stick Slip ◽  
Wear Process ◽  
New Compounds ◽  
Shield Machine ◽  
The Relationship

Abstract The tribological properties and wear mechanisms of EPDM with different carbon black contents under dry friction conditions are studied on an UMT Tribolab friction and wear tester. The variation of carbon black content in EPDM does not lead to the formation of new compounds. However, it significantly improves the shore hardness and tribological properties of EPDM. In addition, significant stick-slip phenomenon occurs during the wear process of EPDM with different carbon black content. During the wear process of EPDM, there are both adhesive wear and abrasive wear, and adhesive wear is the main wear form. Therefore, the results reveal the relationship between carbon black content and tribological properties of EPDM, which can contribute to improve the tribological properties of EPDM.

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