Evaluation of the Friction and Wear Properties of PA6 Composites Filled with Nano-SiO2

2011 ◽  
Vol 299-300 ◽  
pp. 86-89
Author(s):  
Wen Xia Wang ◽  
Jian Li
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Research Article ◽  
Friction And Wear Properties ◽  
Worn Surface ◽  
Scanning Electron

PA6 composites filled with nano-SiO2were synthesized. The aim of the research article is to study the mechanical and friction and wear behaviour of nano-SiO2reinforced PA6 composites. The worn surface of the composite was examined by scanning electron microscopy. The results showed that the addition of nano-SiO2can effectively improve the mechancial and tribological properties of the PA6 composites.

Research on Friction and Wear Properties of Ti(C,N)/Fe Composites

2013 ◽  
Vol 650 ◽  
pp. 326-332
Author(s):  
Yang Li ◽  
Zhi Ping Sun ◽  
Rui Feng Wang ◽  
Li Yan Zou
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
X Ray ◽  
Friction And Wear Properties ◽  
Scanning Electron

The effect of different load, revolving speed ,content of Ti(C,N) and sintering process on the friction coefficient and wear rate of Ti(C,N)/Fe composites was investigated systemically. Besides, the wear morphology of Ti(C,N)/Fe composites were researched with an environment scanning electron microscopy(SEM),and the phase composition were studied by X-ray diffraction(XRD).The research shows that the wear mechanism of Ti(C,N)/Fe composites are abrasive wear and adhesive wear.

Wear Properties of Reaction Sintered B4C Composites

2010 ◽  
Vol 152-153 ◽  
pp. 883-886 ◽  
Author(s):  
Wen Song Lin ◽  
Ning Xiang Fang ◽  
Liang He
Keyword(s):  
Electron Microscopy ◽  
Friction And Wear ◽  
Reaction Sintering ◽  
Wear Properties ◽  
Surface Cracking ◽  
Pin On Disc ◽  
Friction And Wear Properties ◽  
Worn Surface ◽  
Resistance Tests ◽  
Scanning Electron

B4C/CNTs and B4C/Ccomposites were prepared by reaction-sintering technique. The density and porosity of the samples were determined and three-points bending strengths of the composites were measured. Wear resistance tests were performed using a HT-500 pin-on-disc tribometer with the sample placed horizontally on a turning table. The morphology of the worn surfaces and fracture of the composites were examined by means of scanning electron microscopy so as to explore the wear mechanisms. The results indicate that B4C/CNTs composites show improved friction and wear properties as compared with B4C/C composites. It is found that CNTs in the specimens play important role in improving the wear properties of the composites. The wear mechanism of the B4C/CNTs composites is characterized by micro-cutting and plowing at ambient temperature, and sub-surface cracking and the resultant localized spalling on the worn surface at the temperatures higher than 500°C.

Microstructure and Tribological Properties of Cu-Fe Based Braking Materials

2014 ◽  
Vol 941-944 ◽  
pp. 280-283
Author(s):  
Xiao Yang Wang ◽  
Hong Qiang Ru
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tribological Properties ◽  
X Ray Diffraction ◽  
Pressing Method ◽  
X Ray ◽  
The Coefficient Of Friction ◽  
Worn Surface ◽  
Scanning Electron ◽  
Sic Particle

SiC particle-reinforced Cu-Fe based braking materials were fabricated by the P/M hot pressing method. The phase composition, microstructure and the worn surface of the composite were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD).The tribological properties were evaluated using a disk-on-disk type laboratory scale dynamometer. Results indicate that the friction coefficient is 0.42 in 6800rpm, 0.7MPa. With the increase of rotation speeds the coefficient of friction and stable rate were decreased.

Surface Modification of CuS Nanoparticles and their Effect on the Tribological Properties of Hybrid PTFE/Kevlar Fabric/Phenolic Composite

2010 ◽  
Vol 44 (21) ◽  
pp. 2461-2472 ◽  
Author(s):  
Hui-Juan Zhang ◽  
Zhao-Zhu Zhang ◽  
Fang Guo ◽  
Wei Jiang ◽  
Kun Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Tribological Properties ◽  
Wear Properties ◽  
Surface Modified ◽  
Environmental Temperatures ◽  
Scanning Electron ◽  
Phenolic Composite ◽  
Antiwear Ability

Oleic acid-modified CuS nanoparticles were chemically synthesized. The tribological properties of surface modified and unmodified CuS nanoparticles as additives in the hybrid polytetrafluoroethylene (PTFE)/Kevlar fabric/phenolic composite were investigated in detail. The experimental results indicated that the incorporation of modified CuS nanoparticles improved the antiwear ability of the fabric/phenolic composite at varied loads and environmental temperatures. The reasons for the enhanced wear properties of the fabric/phenolic composite filled with surface-modified CuS nanoparticles were discussed based on the results of scanning electron microscopy and Fourier transform infrared spectroscopy.

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.

Research on the Friction and Wear Properties of Magnetorheological Fluids

2017 ◽  
Vol 727 ◽  
pp. 17-21
Author(s):  
Jian Jian Yang ◽  
Hua Yan
Keyword(s):  
Electron Microscopy ◽  
Friction And Wear ◽  
Sliding Surface ◽  
Iron Particles ◽  
Wear Properties ◽  
Base Oil ◽  
Friction And Wear Mechanisms ◽  
Iron Based ◽  
Friction And Wear Properties ◽  
Scanning Electron

In this rsearch, MRFs with different viscosities were prepared. The friction and wear behaviors of carbonyl iron-based MRFs were investigated on a four-ball machine. In addition, the microscopic changes of surfaces were investigated by using scanning electron microscopy (SEM) to interpret the possible friction and wear mechanisms of MRF.It is found that the friction reducing and anti-wear properties are improved by increasing the viscosity of base oil and SiO2 content. Additionally, the operating sequence of sample injection and loading affects the entrainment of iron particles in the sliding surface.

The Preparation and Tribological Properties of Multi-Layer Graphene as Paraffin Liquid Additives

2014 ◽  
Vol 1058 ◽  
pp. 56-60
Author(s):  
Hai Chao Zhao ◽  
Yu Lin Qiao ◽  
Yan Zang ◽  
Qing Zhang
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Ambient Condition ◽  
Wear Properties ◽  
Layer Graphene ◽  
Friction And Wear Properties ◽  
Dispersing System ◽  
Worn Surface ◽  
Different Thickness ◽  
Paraffin Liquid

Different thickness multi-layer graphene were prepared by the method of liquid ultrasonic stripping and characterized by XRD, SEM and TEM. Friction and wear properties of graphene liquid dispersing system were investigated using an Multi-functional reciprocating friction and wear tester in ambient condition. Results indicate that the graphene were in thickness of 10nm-100nm. Multi-layer graphene showed good anti-friction and anti-wear properties as paraffin liquid additives. Multi-layer graphene liquid dispersing system had the best tribological properties with 20N and 0.01wt%, and the average friction coefficient was 0.129, and the wear mass was 4.12×106μm3, reduced by 21.34% and 41.14% than paraffin liquid. The reason is that Multi-layer graphene could adsorb on the worn surface and form solid adsorption layer, which maked the friction and wear reduce.

The Effect of CF Modification on the Flexural and Tribological Properties of PTFE Composites

2011 ◽  
Vol 299-300 ◽  
pp. 17-20
Author(s):  
Wen Xia Wang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Tribological Properties ◽  
Wear Mechanisms ◽  
Continuous Phase ◽  
Tribological Characteristics ◽  
Ptfe Composites ◽  
Surface Morphologies ◽  
Worn Surface ◽  
Scanning Electron

The effects of CF content on flexural and tribological properties of the composites were investigated. The worn surface morphologies of neat PTFE and its composites were examined by scanning electron microscopy (SEM) and the wear mechanisms were discussed. The presence of CF particles dispersed in the PTFE continuous phase exhibited superior tribological characteristics to unfilled PTFE.

Comparative Study of Friction and Wear Behavior of Diamond-Like Carbon Coating under the Lubrication of PAGs Containing Various Additives

2011 ◽  
Vol 130-134 ◽  
pp. 2754-2757
Author(s):  
Hao Wu ◽  
Yan Qiu Xia ◽  
Xin Feng ◽  
Xiang Yu Ge
Keyword(s):  
Tribological Properties ◽  
Carbon Coating ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Wear Properties ◽  
Dlc Coatings ◽  
Friction And Wear Behavior ◽  
Friction And Wear Properties ◽  
Scanning Electron ◽  
Reducing Properties

The friction and wear properties of the DLC coatings were evaluated while being lubricated with pure PAG, PAG containing PN and ZDDP using reciprocating ball-on-disk sliding UMT tester, respectively. The morphologies of the worn surfaces of the DLC coatings were observed using a scanning electron microscope (SEM). The results indicated that the DLC coatings exhibited better tribological properties under the lubrication of PAG containing PN or ZDDP than that of pure PAG. In addition, PN and ZDDP as additives show different tribological properties. The former offers better anti-wear ability, the latter offers better friction-reducing properties.

scholarly journals Tribological Properties of Al-Based Composites Reinforced with Fullerene Soot

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6438
Author(s):  
Firuz Yunusov ◽  
Tatiana V. Larionova ◽  
Oleg Tolochko ◽  
Alexander D. Breki
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Composite Materials ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Tribological Properties ◽  
Friction And Wear ◽  
Pure Aluminum ◽  
Fullerene Soot ◽  
Scanning Electron

Aluminum-based composite materials reinforced with fullerene soot, which is a mixture of fullerene and amorphous carbon, are promising materials for friction and wear applications. Composite materials: aluminum with 2% fullerene soot (f.s) and Al with 2% f.s and 2% Cu were obtained via mechanical milling followed by hot pressing. The tribological properties (friction and wear) of the listed composites were investigated and compared with the results for pure aluminum obtained under similar conditions. It has been shown that the addition of fullerene soot reduces the friction coefficient by 25%. At additional alloying with copper, the friction coefficient decreased by 35% in comparison with pure aluminum and also lad to a decrease in friction fluctuations. The wear rate of composite Al with 2% f.s decreased twice in comparison with that of pure aluminum, and with additional alloying it decreased 2.5 times. The morphology of the wear surfaces was investigated by scanning electron microscopy (SEM). The influence of fullerene soot and additional alloying on the wear mechanism was shown.

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