Tribological behavior and wear mechanism of Ti/MoS2 films deposited on plasma nitrided CF170 steel sliding against different mating materials

Vacuum ◽  
2021 ◽  
Vol 194 ◽  
pp. 110623
Author(s):  
Xingguo Feng ◽  
Hui Zhou ◽  
Yugang Zheng ◽  
Kaifeng Zhang ◽  
Yanshuai Zhang
Keyword(s):  
Wear Mechanism ◽  
Tribological Behavior

The Effect of Particle Concentration and Magnetic Field on Tribological Behavior of Magneto-Rheological Fluid

2011 ◽  
Vol 314-316 ◽  
pp. 58-61 ◽  
Author(s):  
Wan Li Song ◽  
Chul Hee Lee ◽  
Seung Bok Choi ◽  
Myeong Woo Cho
Keyword(s):  
Magnetic Field ◽  
Friction Coefficient ◽  
Wear Mechanism ◽  
Particle Concentration ◽  
Tribological Behavior ◽  
Wear Loss ◽  
Wear Properties ◽  
Mr Fluid ◽  
Magneto Rheological ◽  
The Magnetic Field

In this paper, the effect of particle concentration and magnetic field on the tribological behavior of magneto-rheological (MR) fluid is investigated using a pin-on-disc tribometer. The wear loss and friction coefficient are measured to study the friction and wear properties of MR fluid. The morphology of the worn pin is also observed by scanning electron microscope (SEM) in order to analyze the wear mechanism. The results obtained in this work show that the wear loss and friction coefficient decrease with increasing particle concentration under the magnetic field. Furthermore, it is demonstrated that the magnetic field has a significant effect on improving tribological properties of MR fluid, especially the one with high particle concentration. The predominant wear mechanism of the MR fluid has been identified as abrasive wear.

Tribological Behavior and Wear Mechanism of TZ20 Titanium Alloy After Various Treatments

2018 ◽  
Vol 27 (9) ◽  
pp. 4645-4654 ◽  
Author(s):  
S. X. Liang ◽  
L. X. Yin ◽  
L. Y. Zheng ◽  
H. L. Xie ◽  
J. X. Yao ◽  
...  
Keyword(s):  
Titanium Alloy ◽  
Wear Mechanism ◽  
Tribological Behavior

scholarly journals Tribological Behavior of Boronized Fe40Mn20Cr20Ni20 High-Entropy Alloys

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1561
Author(s):  
Xin Guo ◽  
Xi Jin ◽  
Xiaohui Shi ◽  
Huijun Yang ◽  
Min Zhang ◽  
...  
Keyword(s):  
Wear Rate ◽  
Abrasive Wear ◽  
Wear Mechanism ◽  
Tribological Behavior ◽  
Deionized Water ◽  
Cubic Phase ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Delamination Wear ◽  
Hot Rolled

The tribological behavior of hot-rolled and boronized Fe40Mn20Cr20Ni20 high-entropy alloys (HEAs) sliding against a Si3N4 ball was investigated in the air, deionized water and seawater. The results showed that the hot-rolled Fe40Mn20Cr20Ni20 HEA was composed of an FCC (face-centered cubic) phase. In addition, the boronized HEA was composed of a great number of borides, including CrB, FeB, MnB, Fe2B, Fe3B and MnB2. The hardness increased from 139 HV to 970 HV after boronizing. In air, the wear rate decreased from 4.51 × 10−4 mm3/Nm to 0.72 × 10−4 mm3/Nm after boronizing. The wear mechanism transformed from abrasive wear and oxidative wear to the polishing effect. After boronizing, in the deionized water, the wear rate decreased from 1.27 × 10−4 mm3/Nm to 8.43 × 10−5 mm3/Nm. The wear mechanism transformed from abrasive wear and delamination wear to delamination wear. In the seawater, the wear rate decreased by about ten times that of hot-rolled alloy.

scholarly journals Tribological behavior of Ti(C, N)-TiB2 composite cermets using FeCoCrNiAl high entropy alloys as binder over a wide range of temperatures

2020 ◽  
Author(s):  
Zhanjiang Li ◽  
Peixin Fu ◽  
Chenglong Zhu ◽  
Chunfu Hong ◽  
Pinqiang Dai
Keyword(s):  
Wear Resistance ◽  
Wear Mechanism ◽  
Elevated Temperatures ◽  
Adhesive Wear ◽  
Tribological Behavior ◽  
High Hardness ◽  
Wear Performance ◽  
High Entropy ◽  
Wide Range ◽  
Hot Pressing Sintering

Abstract The Ti(C, N)-TiB2 composite cermets with different binders (HEAs or Ni-Co) were fabricated by mechanical alloying and vacuum hot-pressing sintering. Wear resistance of two composite cermets at elevated temperatures was studied. Wear mechanism was characterized by a combination of scanning electron microscopy and energy dispersive spectroscopy. Experimental results indicated that HEAs binder composite cermets possessed excellent wear resistance comparing with Ni-Co binder composite cermets. At lower temperatures, no obvious difference was observed in worn surfaces of two cermets. Abrasive wear mechanism was dominant wear mechanism. At greater than 600 °C, oxidative wear and adhesive wear were found to be dominant wear mechanism. The wear rate of HEAs binder composite cermets was 11.8%, 17%, 39.25%, and 46.7% lower than that of Ni-Co binder composite cermets at 200℃, 400℃, 600℃, and 800℃, respectively. Enhanced wear performance of Ti(C, N)-TiB2-HEAs composite cermets is attributed to relatively high hardness and toughness, as well as excellent high-temperature softening resistance and oxidation resistance of HEAs.

Development of Wear Mechanism Maps for Acrylonitrile Butadiene Styrene Hybrid Composites Reinforced With Nano Zirconia and PTFE Under Dry Sliding Condition

2018 ◽  
Vol 141 (2) ◽  
Author(s):  
D. Amrishraj ◽  
T. Senthilvelan
Keyword(s):  
Wear Resistance ◽  
Wear Mechanism ◽  
Wear Mechanisms ◽  
Solid Lubricant ◽  
Tribological Behavior ◽  
Hybrid Composites ◽  
Film Formation ◽  
Acrylonitrile Butadiene Styrene ◽  
Transfer Film ◽  
Butadiene Styrene

Acrylonitrile butadiene styrene (ABS) polymer is cost-effective and also possesses high toughness and resistance to corrosive chemicals. However, pure ABS does not show significant wear resistance and also it has a high friction coefficient. Incorporation of a solid lubricant and nanofiller in a polymer matrix improves its tribological properties significantly. The addition of solid lubricant makes it suitable for application where self-lubrication is desirable (sliding bearings, gears). This paper deals with the study of tribological behavior of ABS hybrid composites reinforced with nano zirconia and polytetrafluoroethylene (PTFE). ABS hybrid composites with varying proportions of nano zirconia and PTFE were prepared using melt blending. Dispersion of reinforcement in the polymer matrix has been studied with the help of transmission electron micrographs. Influence of reinforcements on the mechanical behavior is studied by tensile testing according to the ASTM standard. The tribological behavior of composites was determined in a pin-on-disk tribometer according to the ASTM G99 standard. Worn surfaces were analyzed using scanning electron microscope (SEM) in order to identify the different types of wear and various wear mechanisms. Transfer film formation was studied by analyzing the counterbody surface. A wear mechanism map has been developed, which helps in identifying various wear mechanisms involved under given loading conditions. The results reveal that the addition of PTFE reduces the wear rate and coefficient of friction (COF) significantly. Nano zirconia effectively transfers the load, thereby improving wear resistance, and the addition of PTFE results in continuous transfer film formation thereby reducing the COF. Also from the wear map, it has been identified that abrasion, adhesion, plowing, plastic deformation, melting, and delamination are the dominant wear mechanisms involved.

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