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.

Tribological Design of Zirconia Nanocomposite Ceramic Tool and Die Material

2011 ◽  
Vol 697-698 ◽  
pp. 142-146 ◽  
Author(s):  
Ming Dong Yi ◽  
Chong Hai Xu ◽  
X.H. Wang ◽  
Hui Fa Zhang
Keyword(s):  
Mechanical Properties ◽  
Friction And Wear ◽  
Composite Ceramic ◽  
Ceramic Tool ◽  
Wear Properties ◽  
Nano Composite ◽  
Die Materials ◽  
Die Material ◽  
Friction And Wear Properties ◽  
Pressing Technology

A new ZrO2 nano-composite ceramic tool and die material was prepared with vacuum hot pressing technology. The friction and wear behaviors of ZrO2 nano-composite ceramic tool and die materials in sliding against 45 chilled steel rings under dry friction were investigated by using an MMW-1A abrasion wear tester. The mechanical properties and the friction and wear properties of the composites with various compositions and contents were studied. It is indicated that the changing trends of the wear rate and the mechanical properties of the composites with the change of TiB2 and Al2O3 contents are roughly the same, but the friction coefficient is not obviously. The friction and wear properties and the mechanical properties are finer when the TiB2 and Al2O3 content is both 10%.

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.

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.

scholarly journals Study on Friction and Wear Properties of Pantograph Strip/Copper Contact Wire for High-Speed Train

2014 ◽  
Vol 8 (1) ◽  
pp. 125-128 ◽  
Author(s):  
Tao Ding ◽  
Wenjing Xuan ◽  
Qiudong He ◽  
Hao Wu ◽  
Wei Xiong
Keyword(s):  
Wear Rate ◽  
Electric Current ◽  
High Speed ◽  
Friction And Wear ◽  
Optical Microscope ◽  
Wear Properties ◽  
Contact Wire ◽  
Arc Erosion ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties

A series of experiments on friction and wear properties of carbon strip rubbing against copper contact wire is performed on high-speed friction and wear tester with electric current. The results show that the friction coefficient is generally maintained between 0.24 and 0.37. In the absence of electric current, the coefficient of friction is higher than that in the presence of electric current. The wear rate of carbon strip materials is generally not more than 0.014g/km. In particular, the wear rate under the electric current of 240 A is 14 times more than that in the absence of electric current. By observing the scar of worn surface with optical microscope, it can be found that there are obvious slip scars and arc erosive pits. The dominated wear mechanisms are abrasive wear and arc erosion in electrical sliding frictional process.

Experimental Study on Friction and Wear Behaviors of Carbon Rubbing against Copper Material under Electric Current

2013 ◽  
Vol 423-426 ◽  
pp. 797-800 ◽  
Author(s):  
Tao Ding ◽  
Wen Jing Xuan ◽  
Yu Mei Li ◽  
Shu Fen Xiao
Keyword(s):  
Experimental Study ◽  
Electric Current ◽  
Friction And Wear ◽  
Sliding Friction ◽  
Wear Volume ◽  
Wear Properties ◽  
Arc Erosion ◽  
Pin On Disc ◽  
The Coefficient Of Friction ◽  
Oxidation Wear

An experimental study on friction and wear properties of carbon strip rubbing against copper contact wire was carried out on a pin-on-disc frictional tester under electric current. The result indicates that the coefficient of friction slowly increases with increasing of electric current. The value of friction coefficient is low, generally not more than 0.125. The wear volume of pin specimen increases with increasing of electric current. The wear volume of pin specimen is very low, generally not more than 0.075g. Through observing the SEM morphology of worn specimens, it can be found that there are obvious pits of arc ablation and traces of melting metal on worn surface. Worn surfaces of the worn specimens are analyzed by an energy dispersive X-ray spectroscopy. It can be observed that the oxidation wear occurs in the frictional process due to arc erosion and significant temperature rise. Therefore the arc erosion and oxidation wear are a main wear mechanism accompanied by materials transferring in the process of electrical sliding friction.

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.

Effect of Thermal Conduction on Tribological Properties of Polytetrafluoroethylene Based Composites

2010 ◽  
Vol 150-151 ◽  
pp. 655-658
Author(s):  
Ting Xie ◽  
Gang Chen ◽  
Yan Guo Yin ◽  
Ming Hua Jiao ◽  
Jian Wei Yu ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Thermal Conduction ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Wear Properties ◽  
Copper Particles ◽  
The Poor ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties ◽  
Ptfe Composites

Due to the poor thermal conduction of polytetrafluoroethylene (PTFE), some fillers are often added into PTFE matrix to improve its thermal conduction and enhance its tribological performance. In our work, to increase their thermal conduction, the PTFE composites with different contents of copper particles were prepared. The friction and wear properties of the composites were tested. The effect of thermal conduction on tribological properties of the PTFE based composites was analyzed, and the wear mechanisms were also discussed. The results showed that with the increase of the thermal conductivity of the PTFE based composites, the coefficient of friction of the materials reduced, and the wear of the materials was dramatically decreased.

Modification in Some Alloys by Sulfide Formation

1983 ◽  
Vol 105 (2) ◽  
pp. 254-258
Author(s):  
K. Nakajima ◽  
A. Isogai ◽  
Y. Imada
Keyword(s):  
Friction And Wear ◽  
Alloy System ◽  
Wear Property ◽  
Stoichiometric Compound ◽  
Wear Properties ◽  
Friction Modifier ◽  
The Matrix ◽  
Friction And Wear Properties

Friction and wear properties of the Ni-M-S alloy system were examined by changing the composition of M (Mo, Nb or Fe) and S, respectively. Sulfides or complex sulfides such as MoSx or FeNbxSy formed during rubbing or annealing were found to be good materials as a friction modifier, and they were discussed relative to the transformation of non-stoichiometric into stoichiometric compound during abrading. The effect of adding Fe to the matrix was also investigated with the system, and it was found that the Fe especially improves the wear property, among others.

Friction and Wear Properties of Chemomechanically Polished Diamond Films

1994 ◽  
Vol 116 (3) ◽  
pp. 445-453 ◽  
Author(s):  
B. K. Gupta ◽  
Ajay Malshe ◽  
Bharat Bhushan ◽  
Vish V. Subramaniam
Keyword(s):  
Coefficient Of Friction ◽  
Diamond Film ◽  
Friction And Wear ◽  
Elevated Temperatures ◽  
Natural Diamond ◽  
Diamond Films ◽  
Wear Properties ◽  
Crystal Silicon ◽  
The Coefficient Of Friction ◽  
Friction And Wear Properties

The role of surface roughness on the coefficient of friction and wear of polished CVD diamond films has been investigated. Diamond films grown on single crystal silicon (001) substrates by Hot Filament Chemical Vapor Deposition (HFCVD) process were polished by a chemomechanical process in which a diamond film was polished against another diamond film in the presence of a fused alkaline oxidizer at 320°C. Friction and wear properties of these polished films were measured at elevated temperatures and in the presence of various gaseous environments. The coefficient of friction of the polished diamond films was found to be about 0.09, which is very close to that of natural diamond (0.07). The wear rate of the mating alumina ball slid against a polished diamond film was also found to be comparable, when slid natural diamond.

Sign in / Sign up

Export Citation Format

Share Document