Research on Friction and Wear Properties of MC Nylon/ Carbon Nanotubes Composites

2013 ◽  
Vol 662 ◽  
pp. 40-43
Author(s):  
Tie Jun Ge ◽  
Jing Wang ◽  
Wei He
Keyword(s):  
Friction And Wear ◽  
Adhesive Wear ◽  
In Situ Polymerization ◽  
Weight Percent ◽  
Wear Properties ◽  
Mechanics Performance ◽  
Long Time ◽  
Carbon Nano Tubes ◽  
Friction And Wear Properties ◽  
Short Time

In this article, MC nylon/carbon nano tubes (CNTs) composites were prepared by in-situ polymerization method. The friction and wear properties were determined. The sample wear surface morphology carried out by scanning electron microscope (SEM) and the wear mechanism was investigated. It was found that the friction coefficient of composites has decreased with the amount of CNTs increasing in the composites. Addition amount of CNTs is up to 0.3% (weight percent), abrasion index decreased to minimum. The abrasion index of the sample of wearing a long time is smaller than that of the sample of wearing a short time. The sample with wearing less time mainly take place adhesive wear, however, mainly happen abrasive wear and adhesive wear for wearing time is longer. Further more, carbon nano tubes (CNTs) are not only improve the wear resistance of composites but also improve the mechanics performance.

Friction and Wear Property of Ti(C,N)/ZrO2/WC Nano-Composite Cermet Die Material

2013 ◽  
Vol 834-836 ◽  
pp. 23-28 ◽  
Author(s):  
Jun Ma ◽  
Chong Hai Xu ◽  
Ming Dong Yi ◽  
Guang Chun Xiao ◽  
Xing Hai Wang
Keyword(s):  
Friction And Wear ◽  
Adhesive Wear ◽  
Wear Property ◽  
Wear Properties ◽  
Nano Composite ◽  
Die Materials ◽  
The Coefficient Of Friction ◽  
Die Material ◽  
Friction And Wear Properties ◽  
Oxidation Wear

Ti (C,N)/ZrO2/WC nanocomposite cermet die materials were fabricated by vacuum hot pressing process, the materials have better comprehensive mechanical properties. The friction and wear properties of Ti (C,N)-based nanocomposite cermet die materials were studied, and the worn surfaces microstructure were observed and analysed by SEM and XRD. The experimental results showed that when the rotate speed was higher, the coefficient of friction of the developed cermet die material, which is 0.3-0.4, was lower than that without the addition of nanoZrO2 and micrometer WC. The main wear mechanisms were abrasive wear, oxidation wear and adhesive wear.

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.

Study on Friction and Wear of Several Metal Materials under Oil Lubrication

2013 ◽  
Vol 764 ◽  
pp. 55-59
Author(s):  
Zhan Bin Guo ◽  
Song Lin Gao
Keyword(s):  
Friction And Wear ◽  
Adhesive Wear ◽  
Friction Pair ◽  
Oil Lubrication ◽  
Wear Properties ◽  
Wear Performance ◽  
Sliding Speed ◽  
Metal Materials ◽  
Friction And Wear Properties ◽  
Main Factor

The friction and wear properties of several common metal materials (45#, 25CrMn, and 40CrNiMo) friction pair under oil lubrication was investigated on M-200 Type wear tester, and studied the friction under the condition of differ sliding speed and pressure. The results show that: the 25CrMn/45# steel pair has better tribological and wear performance; the load is the main factor which influences the friction of the material at the low sliding speed; the main wear form is adhesive wear, but the wear mechanism is gradually became from adhesive wear to abrasive wear and flaking wear with the contact pressure and sliding speed increased.

Effects of Dry Sliding Conditions on Wear Properties of Al-Matrix Composites Produced by Selective Laser Melting Additive Manufacturing

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Dongdong Gu ◽  
Jiubin Jue ◽  
Donghua Dai ◽  
Kaijie Lin ◽  
Wenhua Chen
Keyword(s):  
Wear Mechanisms ◽  
Friction And Wear ◽  
Matrix Composites ◽  
Wear Properties ◽  
Long Time ◽  
Friction And Wear Properties ◽  
Al Matrix Composites ◽  
Worn Surface ◽  
Oxidation Wear ◽  
Al Matrix

The friction and wear properties of in situ Al-matrix composites prepared by selective laser melting (SLM) were evaluated on a ball-on-disk tribometer by sliding against GCr15 steel at room temperature. The influence of the applied load, sliding speed, and long-time continuous friction on the friction and wear properties of Al-matrix composites was systematically investigated. It showed that the wear rate and coefficient of friction (COF) increased when the applied load increased, due to the higher contact stress and larger extent of particle fracturing. As the sliding speed increased, the elevated rate of the formation of Al-oxide layer and the transfer of Fe-oxide layer from the counterface to the worn surface led to a significant reduction in wear rate and COF. As the sliding distance prolonged, the worn surface successively experienced the adhesive wear, the abrasive wear, the particle fracturing and crack nucleation, and the delaminated wear. The above processes were repeated on each exposed fresh surface, resulting in the fluctuation of COF. In the later stage of wear process, a large amount of oxides were produced on the worn surface, caused by the long-time accumulated frictional heat, which reduced the fluctuation of COF. The wear mechanisms of SLM-processed Al-matrix composite parts under various loads were dominated by abrasive wear and oxidation wear, whereas the predominant wear mechanisms were oxidation wear and delamination wear at different sliding speeds. For the long-time friction, all of these wear mechanisms were operational.

Study of Friction and Wear Properties of C-Cu Composites Reinforced with Carbon Fiber Cloth

2013 ◽  
Vol 756-759 ◽  
pp. 132-137
Author(s):  
Chao Li ◽  
De Gui Zhu ◽  
Qing Yi Huang
Keyword(s):  
Carbon Fiber ◽  
Wear Mechanism ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Normal Load ◽  
Wear Properties ◽  
Sliding Speed ◽  
Abrasion Loss ◽  
Carbon Fiber Cloth ◽  
Friction And Wear Properties

C-Cu composites reinforced with carbon fiber cloth were prepared by hot pressing sintering technology. Wear test was conducted with copper ring under dry friction condition. The effects of load and sliding speed on friction and wear properties of the composites were studied respectively and meanwhile the wear mechanism was analyzed by combination with the morphologies of worn surfaces. The results show that carbon fiber cloth improves the wear resistance of composites and fiber grindings possess the ability of alleviating adhesive wear. These make abrasion loss small in the range of normal load and sliding velocity. With increasing of the load and sliding speed, friction coefficient and abrasion loss also increase. The main wear mechanism is transformed from slight adhesive wear into delamination wear and is accompanied by abrasive wear and slight oxidative wear at the same time.

Friction and Wear of Polished Single Crystal Silicon at Different Area

2010 ◽  
Vol 142 ◽  
pp. 117-121
Author(s):  
Shou Xin Yu ◽  
D.W. Zou ◽  
X.L. Zhu ◽  
Yu Li Sun ◽  
L. Zhou
Keyword(s):  
Surface Roughness ◽  
Single Crystal ◽  
Friction And Wear ◽  
Friction Mechanisms ◽  
Adhesive Wear ◽  
Single Crystal Silicon ◽  
Wear Properties ◽  
Crystal Silicon ◽  
Silicon Area ◽  
Friction And Wear Properties

A friction and wear experiment was carried out at different areas of single crystal silicon under same surface roughness. Friction mechanisms at different area were analyzed by STM and 3D profiler. The result showed that the friction and wear properties were obviously different at different area although they had same surface roughness. The friction and wear properties of the single crystal silicon where closest to inner-cycle internal were best while the farther from the inner-cycle silicon area or closer to crystal silicon cylindrical, the worse friction and wear properties were. Abrasive wear and adhesive wear were the primary wear mechanisms.

The Friction and Wear Properties of Cu-Te-Li Alloys with High-Strength and High-Conductivity

2014 ◽  
Vol 599-601 ◽  
pp. 153-159 ◽  
Author(s):  
Tao Zeng ◽  
Lin Jiao ◽  
Da Chuan Zhu ◽  
Chen Yang
Keyword(s):  
Friction Coefficient ◽  
Wear Rate ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Testing Machine ◽  
Aging Treatment ◽  
Wear Testing ◽  
Dry Sliding ◽  
Wear Properties ◽  
Friction And Wear Properties

The friction and wear properties of Cu-Te-Li alloys under dry sliding condition were studied by M-200 wear testing machine. The morphology and chemical composition of worn surfaces were analyzed by SEM and EDS, thus the effect of aging treatment on friction coefficient, wear rate and wear mechanism was discussed. The results showed that Te element could improve the wear resistance of copper alloys. With Te content increasing, the friction coefficient of Cu-Te-Li alloys declined slightly and tended to be stable as a whole, while the wear rate decreased obviously. During the process of dry sliding friction, adhesive wear was the dominant mechanism, with oxidative wear coexisting. But for the Cu-Te-Li alloys after aging treatment, abrasive wear appeared and adhesive wear was intensified, especially at higher friction velocity.

Microstructure and Friction and Wear Properties of the Composite Material of TiC/7075 in Powder Metallurgy

2011 ◽  
Vol 383-390 ◽  
pp. 3325-3330
Author(s):  
Ping Xu ◽  
Hui Min Liu ◽  
Xiang Dong Liu ◽  
Feng Wang
Keyword(s):  
Wear Resistance ◽  
Composite Material ◽  
Powder Metallurgy ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Sintering Temperature ◽  
Matrix Alloy ◽  
Equiaxed Crystal ◽  
Wear Properties ◽  
Friction And Wear Properties

The research is conducted to analyze the micro structure of TiC/7075, a composite material and to study its wear properties. TiC/7075 composites produced under different sintering temperatures and with different particle contents are prepared with the help of the powder metallurgy technology. The result shows that with the increase of the TiC content, the microstructure of TiC/7075 composites tend to have the form of equiaxed crystal. The microstructure of the composite material with 8% of TiC shows the uniform and fine properties, making it have the properties of the equiaxed crystal. The hardness and the wear resistance increase with the increase of the content of TiC. Also with the increase of the sintering temperature, the sharp edge of the hole becomes smooth. The wear resistance of TiC/7075 composites is superior to 7075 matrix alloy, and the wear mechanism of TiC/7075 composites is adhesive wear and abrasive wear.

scholarly journals Friction and Wear Properties of Cold Gas Dynamic Sprayed α-Al2O3-Al Composite Coatings

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Jie Wu ◽  
Yongshan Tao ◽  
Huazi Jin ◽  
Ming Li ◽  
Tianying Xiong ◽  
...  
Keyword(s):  
Abrasive Wear ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Composite Coatings ◽  
Wear Properties ◽  
Gas Dynamic ◽  
Cold Gas Dynamic Spray ◽  
Friction And Wear Properties ◽  
Α Al2o3 ◽  
Cold Gas

Different proportions of α-Al2O3 and pure Al powders were coated onto AZ91D magnesium alloy substrates by cold gas dynamic spray. The microstructure and morphologies of the coatings were observed by scanning electron microscope. The friction and wear properties were tested by a ball-on-disk wear tester. It was found that the interfaces between grains and substrates formed close boundaries. It is revealed that the composite coatings could increase the friction or wear properties of the coatings. It was observed that the wear of coatings was converted from adhesive wear into abrasive wear with α-Al2O3 particles increasing and that the adhesive wear accompanied with abrasive wear would increase the wear rate of coatings.

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