The Research on the Friction and Wear Behavior of FKM/NBR Blends under Water Lubrication

2013 ◽  
Vol 750-752 ◽  
pp. 2150-2155 ◽  
Author(s):  
Yu Zeng Zhang ◽  
Ming Yin Yan ◽  
Shi Jie Wang ◽  
Xiao Ren Lv
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Frictional Coefficient ◽  
Water Lubrication ◽  
Wear Loss ◽  
Fatigue Wear ◽  
Screw Pump ◽  
Friction And Wear Behavior ◽  
Working Parameters

In this paper, the friction and wear behavior of FKM, NBR and FKM/NBR blends with the same Shore hardness was investigated in the MPV - 600 wear tester under water lubrication based on the actual working parameters of the screw pump. Wear mechanism of FKM/NBR blends with different load was also analyzed according to their wear loss and frictional coefficient. The results showed that the wear resistance of NBR was improved by the addition FKM. FKM/NBR blend with ratio of 2:8 owned the optimal wear resistance, which was close to that of FKM. The wear of FKM and FKM/NBR blend with ratio of 2:8 was controlled by fatigue wear, and the others were mainly controlled by abrasive wear.

The Effect of Load on Friction and Wear Behavior of NBR and FPM under Dry Sliding

2011 ◽  
Vol 239-242 ◽  
pp. 985-989
Author(s):  
Xiao Ren Lv ◽  
Hao Sun ◽  
Xuan Luo ◽  
Shi Jie Wang
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Frictional Coefficient ◽  
Wear Loss ◽  
Dry Sliding ◽  
Shore Hardness ◽  
Friction And Wear Behavior ◽  
Stereo Microscope ◽  
Worn Surface

The effect of load on the friction and wear behavior of NBR and FPM was investigated using a ring-on-block tester under dry sliding. The hardness and morphology of worn surface were measured using Shore Hardness and stereo microscope, respectively. The results showed that at the load of 50, 100 and 150N, the wear loss of NBR was lower than that of FPM and the frictional coefficient of NBR was the same as that of FPM. While at the load of 175, 200 and 225N, the wear loss and frictional coefficient of NBR were higher than that of FPM. The reason for the variation of friction and wear behavior of NBR and FPM under different load was discussed preliminarily.

Research on Friction and Wear Behavior of Rubber in the Mixture of Crude Oil with Water

2013 ◽  
Vol 300-301 ◽  
pp. 1254-1258 ◽  
Author(s):  
Xiao Ren Lv ◽  
Xu Yao Huo ◽  
Guang Zu Qu ◽  
Shi Jie Wang
Keyword(s):  
Crude Oil ◽  
Water Content ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Frictional Coefficient ◽  
Water Film ◽  
Wear Test ◽  
Wear Behaviour ◽  
Wear Loss ◽  
Butadiene Rubber

In order to choose the rubber material and improve the service life of Progressing Cavity Pump (PCP ) when exploiting offshore crude oil, it is important to analyze friction and wear behaviour of stator and rotor of PCP in the mixture of crude oil with different water content. The friction and wear test about Nitrile -Butadiene Rubber (NBR) and Fluorine Rubber (FKM) were carried on ring-on-block tester, the wear loss was observed by electron microscope, the wear mechanism was also discussed. The results show that: (1) FKM owns better wearing resistance than NBR in the mixture of crude oil with different water content; (2) when the content of water in the mixture is less than 26%, the frictional coefficient of sample is 0.05, due to the oil film between the friction pairs; (3) when the content of water in the mixture is more than 26%, the frictional coefficient increases to 0.4, because of the water film between the friction pairs.

Wear Behavior of Flat and Graded Profile Boron-Implanted Beryllium

1983 ◽  
Vol 27 ◽  
Author(s):  
K. Kumar ◽  
H. Newborn ◽  
R. Kant
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Friction And Wear ◽  
Boron Concentration ◽  
Wear Behavior ◽  
Friction And Wear Behavior ◽  
Flat Profile ◽  
Pin On Disk

ABSTRACTPin-on-disk tests were performed for comparative friction and wear behavior on flat and graded profile boron implanted beryllium samples. Peak, intended boron concentrations of 10, 20, 30 and 40 atom percent were investigated. Auger Electron Spectroscopy was used to determine the boron concentration as a function of depth. Preliminary work was performed to study the effects of (1) a low temperature (450°C, 1–1/2 hours) heat treatment of the implanted specimens and (2) a change in the pin material. All of the boron implanted beryllium samples showed significant improvement versus unimplanted beryllium and an anodized beryllium surface. Graded samples showed comparable friction coefficients but inferior wear resistance with respect to the flat profile samples.

scholarly journals Friction and Wear Behavior of Polyimide Composites Reinforced by Surface-Modified Poly-p-Phenylenebenzobisoxazole (PBO) Fibers in High Ambient Temperatures

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1805
Author(s):  
Yu ◽  
Zhang ◽  
Tang ◽  
Gao
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Specific Wear Rate ◽  
Interface Properties ◽  
Sliding Velocity ◽  
Friction And Wear Behavior ◽  
Ambient Temperatures

(1) In order to improve the properties of antifriction and wear resistance of polyimide (PI) composite under high temperature conditions, (2) 3-Aminopropyltriethoxysilane (APTES) and Lanthanum (La) salt modifications were employed to manufacture poly-p-phenylenebenzobisoxazole (PBO)/PI composites with different interface properties. The representative ambient temperatures of 130 and 260 °C were chosen to study the friction and wear behavior of composites with different interface properties. (3) Results revealed that while both modification methods can improve the chemical activity of the surface of PBO fibers, the La salt modification is more effective. The friction coefficient of all composites decreases with the increase of sliding velocity and load at two temperatures, and the specific wear rate is increases. Contrary to the situation in the 130 °C environment, the wear resistance of the unmodified composite in the 260 °C environment is greatly affected by the sliding velocity and load, while the modified composites are less affected. Under the same test parameters, the PBO–La/PI composite has the lowest specific wear rate and friction coefficient, and (4) La salt modification is a more effective approach to improve the properties of antifriction and wear resistance of PI composite than APTES modification in high ambient temperatures.

Friction and Wear Behavior of Boronized Chromium for Biological Applications

2005 ◽  
Author(s):  
R. Ribeiro ◽  
S. Ingole ◽  
O. Juan ◽  
H. Liang ◽  
M. Usta ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Surface Characterization ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Work Piece ◽  
X Ray Diffraction ◽  
Friction And Wear Behavior ◽  
Pin On Disc ◽  
Dry Conditions ◽  
Wear Mode

Enhanced corrosion and wear resistance are crucially important to prolong the service life of biomaterials. Boronizing has been reported to enhance the wear resistance of pure chromium. In this research, we investigate friction and wear behavior of boronized chromium. Pin-on-disc tribometer was used to conduct the wear and friction tests. Experiments were conducted in dry conditions as well as in simulated body fluid (SBF). Fundamental aspects of wear mode and lubrication behavior were studied using surface characterization techniques such as TEM, and X-ray diffraction. Results showed evidence of tribo-chemical interactions between SBF and work piece materials.

Friction and Wear Behavior of 45# Steel with Different Plant Abrasive

2013 ◽  
Vol 712-715 ◽  
pp. 74-77
Author(s):  
Chuan Jia Yang ◽  
Xiao Peng Huang ◽  
Jing Feng Wu ◽  
Fang Xin Wan
Keyword(s):  
Electron Microscopy ◽  
Friction And Wear ◽  
Adhesive Wear ◽  
Wear Behavior ◽  
Mechanical Polishing ◽  
Wear Loss ◽  
Dominant Mechanism ◽  
Friction And Wear Behavior ◽  
Worn Surface ◽  
Scanning Electron

The wear behavior of different plant abrasive to 45# steel was studied by using an abrasive rubber wheel tester. The worn surface of the frictional samples morphology was observed by using Scanning Electron Microscopy, and the wearing mechanism of different abrasive to 45# steel was analyzed. The results show that: on the experiment conditions, the wear loss from big to small is alfalfa abrasive, corn abrasive and wheat abrasive, and the wear rules of corn abrasive and wheat abrasive are similar, but the wear loss of alfalfa abrasive is much higher than the former two. The wear dominant mechanism of the wheat abrasive to 45# steel is mechanical polishing, the wear dominant mechanism of the corn abrasive to 45# steel is mechanical polishing and adhesive wear, the wear dominant mechanism of the alfalfa abrasive to 45#steel is micro-cutting and adhesive wear.

Effect of Humidity on the Friction and Wear Properties of Sn

1995 ◽  
Vol 117 (4) ◽  
pp. 737-741 ◽  
Author(s):  
Y. Imada ◽  
K. Nakajima
Keyword(s):  
Relative Humidity ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Disk Surface ◽  
Wear Loss ◽  
Wear Properties ◽  
Friction And Wear Behavior ◽  
Low Humidity ◽  
Friction And Wear Properties ◽  
Pin On Disk

Variation in friction and wear properties with relative humidity was obtained with an Sn pin sample on a Cu disk at a constant speed (0.4 m/s), load (6.4 N), and sliding distance (5 km), using a pin-on-disk apparatus. The influence of atmosphere on the tribological properties was investigated, including moisture ranging from 4% to 95 percent relative humidity (RH). It was found that the wear loss of the pin sample is very large at low humidity of around 5 percent RH, but it decreases and reaches saturation at about 50 percent RH. Factors characterizing the friction and wear at 50 percent RH were examined along with surface analysis of the disk. The results showed that the extensive transfer of Sn from pin to disk occurs during sliding and that the friction and wear behavior is determined by the friction and wear of an Sn sliding on Sn. An examination was carried out with an Sn pin sample on a stainless steel disk in comparison with an Sn-Cu couple. It was concluded that the friction and wear behavior is determined by the properties of the film transferred to the disk surface.

Tribochemistry in sliding wear of TiCN–Ni-based cermets

2008 ◽  
Vol 23 (5) ◽  
pp. 1214-1227 ◽  
Author(s):  
B.V. Manoj Kumar ◽  
Bikramjit Basu ◽  
Joze Vizintin ◽  
Mitjan Kalin
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Bearing Steel ◽  
Wear Loss ◽  
Secondary Carbide ◽  
Pronounced Increase ◽  
Friction And Wear Behavior ◽  
Secondary Carbides ◽  
Low Load ◽  
The Stability

The tailoring of cermet composition to improve tribological properties requires careful choice of the type of secondary carbide. To investigate this aspect, a number of sliding tests were carried out on baseline TiCN–20Ni cermet and TiCN–20wt%Ni–10 wt% XC cermets (X = W/Nb/Ta/Hf) at varying loads of 5N, 20N, and 50N against bearing steel. With these experiments, we attempted to answer some of the pertinent issues: (i) how does the type of secondary carbide (WC/NbC/TaC/HfC) influence friction and wear behavior, and is such influence dependent on load?; and (ii) how does the secondary carbide addition affect the stability and composition of the tribochemical layer under the selected sliding conditions? Our experimental results reveal that the added secondary carbides influence chemical interactions between different oxides and such interactions dominate the friction and wear behavior. A higher coefficient of friction (COF) range, varying from 0.75 to 0.64 was recorded at 5N; whereas the reduced COF of 0.46–0.52 was observed at 20N or 50N. The volumetric wear rate decreased with load and varied on the order of 10−6 to 10−7 mm3/Nm for the cermets investigated. The cermet containing HfC exhibited high friction and poor wear resistance. At low load (5N), the abrasion and adhesion of hard debris containing various oxides dominated the wear, and resulted in high friction and wear loss. In contrast, the more pronounced increase in friction-induced contact temperature (below 500 °C) and compaction of hard debris resulted in the formation of a distinct tribochemical layer at higher loads (20N and 50N). The formation of a dense tribolayer containing oxides of iron and/or titanium is responsible for the reduced friction and wear, irrespective of secondary carbides.

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