The Research on Friction and Wear Properties of Silicon Carbide and Silicon Nitride

2012 ◽  
Vol 482-484 ◽  
pp. 1298-1301
Author(s):  
Fu Gang Yan ◽  
Shuai Yan ◽  
Feng Liu ◽  
Bin Lin
Keyword(s):  
Silicon Carbide ◽  
Silicon Nitride ◽  
Bearing Capacity ◽  
Dry Friction ◽  
Friction And Wear ◽  
Friction Pair ◽  
Ultimate Bearing Capacity ◽  
Wear Properties ◽  
Friction And Wear Properties ◽  
Better Than

Taking into account the condition that dry friction may occur when Si3N4 and SiC are self-made into friction pair, experiments are carried out to contrast the friction and wear properties under the condition of dry friction. In this experiment SiC friction pair presents better friction and wear properties, whose ultimate bearing capacity is better than Si3N4.

Improvement of the Dry Friction and Wear Properties of the Si/SiC by Doping with Ni and PbO

2010 ◽  
Vol 658 ◽  
pp. 456-459
Author(s):  
Ke Zheng Sang ◽  
Wen Chao Wang ◽  
Gang Qiang Geng
Keyword(s):  
Silicon Carbide ◽  
Wear Resistance ◽  
Dry Friction ◽  
Lead Oxide ◽  
Friction And Wear ◽  
Sintering Process ◽  
Wear Properties ◽  
Dry Conditions ◽  
Friction And Wear Properties ◽  
Pin On Disk

The composite of silicon carbide with nickel and lead oxide was prepared by reaction sintered method. The phase compositions of the composites were studied by XRD, SEM and EDX. Friction and wear properties of the composites in dry conditions at the temperatures 15°C, 300°C and 600°C were tested using a pin-on-disk tribometer. The results showed that NiSi2 was formed and located between the SiC particles during sintering process. However the PbO was remained and distributed uniformly in the composites besides a little of Pb4SiO6 were formed. Friction coefficient of the composites decreased with the increase of the temperature and was about 0.2 at 600°C. And wear resistance of the composites was improved at all test temperatures comparing with that of the Si/SiC.

The Analysis on the Tribological Properties of TPU/PVC Blends under Oil Lubrication

2013 ◽  
Vol 774-776 ◽  
pp. 94-98
Author(s):  
Dao Yuan Pan ◽  
Peng Peng Wu ◽  
Zhong Xue Gao ◽  
Yu Zeng Zhang
Keyword(s):  
Working Conditions ◽  
Friction And Wear ◽  
Oil Lubrication ◽  
Wear Properties ◽  
Operation Conditions ◽  
Hydraulic Steering ◽  
Pros And Cons ◽  
Friction And Wear Properties ◽  
Lubrication Conditions ◽  
Better Than

Based on actual working conditions and parameters of the hydraulic steering gear, the purpose is optimizing the rubber seal of steering gear by different rubbers mixing technology. Compare the five kinds of rubber with metal of the friction characteristics in dynamic fit, it can obtain a performance excellent rubber real in the specific operation conditions. And then improve the overall service life of the steering gear. It is first prepared the same hardness TPU and PVC and blends that the ratio is 3:7, 5:5and7:3 in this article. The pros and cons of the five rubbers are analyzed in friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed. It determines TPU/PVC = 3:7 blends through friction and wear and wear mechanism of five rubbers with steel comparatively analyses, and the heat resistance and wear resistance of them are better than the other TPU/PVC blends and PVC under oil lubrication conditions.

Tribological properties of the epoxy resin-based solid lubricant coating modified by Kevlar fibers

2018 ◽  
Vol 70 (9) ◽  
pp. 1706-1713 ◽  
Author(s):  
Guotao Zhang ◽  
Yanguo Yin ◽  
Ting Xie ◽  
Dan Li ◽  
Ming Xu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Epoxy Resin ◽  
Tribological Properties ◽  
Dry Friction ◽  
Friction And Wear ◽  
Solid Lubricant ◽  
Transfer Film ◽  
Wear Properties ◽  
Content Type ◽  
Friction And Wear Properties

Purpose This paper aims to obtain high mechanical and good tribological properties of epoxy resin-based coatings under dry friction conditions. Design/methodology/approach Bonded solid lubricant coatings containing Kevlar fibres were prepared by a spraying method. The friction and wear properties of the coatings were experimentally investigated with a face-to-face tribometre under dry friction conditions. Scanning electron microscopy, energy dispersive X-ray spectroscopy and 3D laser scanning technologies were used to characterise the tribological properties. The action mechanism of the Kevlar fibres on a solid lubricant transfer film was also analysed. Findings Adding Kevlar fibres can significantly improve the wear resistance of the coatings. When the Kevlar fibre content increases, the tribological properties of the coatings improve and then worsen. Superior properties are obtained with 0.03 g of Kevlar fibres. Appropriately increasing the load or speed is beneficial to the removal of the outer epoxy resin and the formation of a lubricant film. During friction, the solid lubricants wrapped in the epoxy resin accumulate on the surface to form a transfer film that shows a good self-lubricating performance. In the later friction stage, fatigue cracks occur on the solid lubricant film but cannot connect to one another because of the high wear resistance and the entanglement of the rod-like Kevlar fibres. Thus, no large-area film falls from the matrix, thereby ensuring the long-term functioning of solid lubricant coatings. Originality/value Epoxy resin-based solid lubricant coatings modified by Kevlar fibres were prepared, and their friction and wear properties were investigated. Their tribological mechanisms were also proposed. This work provided a basis for the analysis of the tribological properties and design of bonded solid lubricant coatings containing Kevlar fibres.

scholarly journals Effect of temperature and mating pair on tribological properties of DLC and GLC coatings under high pressure lubricated by MoDTC and ZDDP

Friction ◽  
2020 ◽  
Author(s):  
Kang Liu ◽  
Jia-jie Kang ◽  
Guang-an Zhang ◽  
Zhi-bin Lu ◽  
Wen Yue
Keyword(s):  
Tribological Properties ◽  
Friction And Wear ◽  
Effect Of Temperature ◽  
Wear Properties ◽  
Dlc Coatings ◽  
Base Oil ◽  
Two Temperatures ◽  
Friction And Wear Properties ◽  
Lubrication Conditions ◽  
Better Than

AbstractDiamond-like carbon (DLC) and graphite-like carbon (GLC) coatings have good prospects for improving the surface properties of engine parts. However, further understanding is needed on the effect of working conditions on tribological behaviors. In this study, GLC and two types of DLC coatings were deposited on GCr15 substrate for investigation. The friction and wear properties of self-mated and steel-mated pairs were evaluated. Two temperatures (25 and 90 °C), three lubrication conditions (base oil, molybdenum dithiocarbamate (MoDTC)-containing oil, MoDTC+zinc dialkyldithiophosphate (ZDDP)-containing oil), and high Hertz contact stress (2.41 GPa) were applied in the experiments. The results showed that high temperature promoted the effect of ZDDP on steel-mated pairs, but increased wear under base oil lubrication. The increased wear for steel-mated pairs lubricated by MoDTC-containing oil was due to abrasive wear probably caused by MoO3 and β-FeMoO4. It was also found that in most cases, the tribological properties of self-mated pairs were better than those of steel-mated pairs.

The Analysis on the Tribological Properties of CR/EPDM Blends with Chrome-Plated Steel under Dry Sliding

2013 ◽  
Vol 774-776 ◽  
pp. 99-102 ◽  
Author(s):  
Lian Hua Zhao ◽  
Xiao Bo Wei ◽  
Xiao Guang Li
Keyword(s):  
Friction And Wear ◽  
Conveyor Belt ◽  
Operating Conditions ◽  
Dry Sliding ◽  
Wear Properties ◽  
Transportation Equipment ◽  
Pros And Cons ◽  
Friction And Wear Properties ◽  
Technology Comparison ◽  
Better Than

It is based on actual working conditions and parameters of the conveyor belt, to reach the purpose of the optimizing rubber by different rubbers mixing technology. Comparison the five kinds rubber and metal of the friction characteristics in dynamic fit, obtained a performance excellent rubber in the specific operating conditions. Then improve the overall service life of the transportation equipment. It is first prepared the same hardness CR and EPDM and blends that is ratio of 2:8, 5:5and8:2 in this article. The pros and cons of the five rubbers are analyzed by friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed, friction and wear and wear mechanism of five rubbers with chrome-plated steel comparatively analyses to determine CR/EPDM = 8:2 blends has the heat resistance and wear resistance are better than CR and EPDM under dry sliding conditions.

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.

A Comparative Study on the Friction and Wear Properties of Three Different Copper Alloys

2018 ◽  
Vol 913 ◽  
pp. 205-211
Author(s):  
Dong Mei Liu ◽  
Qiang Song Wang ◽  
Wei Yuan ◽  
Xu Jun Mi
Keyword(s):  
Friction Coefficient ◽  
Comparative Study ◽  
Dry Friction ◽  
Friction And Wear ◽  
Copper Alloys ◽  
Friction Condition ◽  
Al Alloy ◽  
Wear Properties ◽  
Friction Coefficients ◽  
Friction And Wear Properties

A comparative study on the friction and wear properties of three kinds of copper alloys, including Cu-Ni based, Cu-Al and Cu-Be alloys was carried out in this study. The friction pair was stainless steel, and both dry and MoS2 lubrication friction experiments were investigated. During the experiments, different loads were chosen for different alloys. It was found that under dry friction condition, the friction coefficients of both Cu-Ni based and Cu-Al alloys did not change as the loads changes, whereas the friction coefficient of Cu-Be alloy increased as the loads increases. Under lubrication friction condition, the friction coefficients of all three alloys did not change as the load changes. The results show that the dry friction coefficient of Cu-Ni based alloy was the largest (0.74), the Cu-Al alloy next (0.60), and the Cu-Be alloy had the smallest dry friction coefficient (0.54). The lubrication friction coefficient of Cu-Ni based and Cu-Be was equal and relatively smaller (0.12), whereas the Cu-Al alloy had a relative larger lubrication friction coefficient (0.27). The microstructure observations were consistent with the friction and wear performance, and the SEM results show that different wear mechanisms were dominated for different alloys.

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