scholarly journals Effect of Micro-Textured Surfaces and Sliding Speed on the Lubrication Mechanism and Friction-Wear Characteristics of CF/PEEK Rubbing against 316L Stainless Steel under Seawater Lubrication

2021 ◽  
Vol 11 (21) ◽  
pp. 9915
Author(s):  
Yingna Liang ◽  
Jianxin Gao ◽  
Dianrong Gao ◽  
Yanan Sun ◽  
Zongyi Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Adhesive Wear ◽  
Friction Pair ◽  
Surface Friction ◽  
Contact Temperature ◽  
Oxidative Wear ◽  
Lubrication Mechanism ◽  
Sliding Speed ◽  
Wear Characteristics

In this work, the lubrication mechanism and friction-wear characteristics of the friction pair between carbon-fiber-reinforced polyether ether ketone (CF/PPEK) and 316L stainless steel with a micro-hemispherical pit textured surface at different sliding speeds under seawater lubrication were studied through numerical simulation and experimental investigation. The study results indicate that the seawater moves following the sliding direction of the upper specimen, forms a vortex ring flow in the hemispherical pit of the bottom specimen, uses the convergent gap to generate a hydrodynamic effect, produces the bearing capacity, and realizes fluid lubrication. The hemispherical pit diminishes the abrasive wear during the friction process by storing the wear debris, and the main wear forms of the hemispherical-pit surface friction pair are oxidative wear and adhesive wear. The friction coefficient of the hemispherical-pit surface friction pair is 0.018–0.027, the specimen contact temperature is 40.2–55.1 °C, and it is always in the hydrodynamic lubrication state in a rotation speed ranging from 1000 r/min to 1750 r/min. As the sliding speed increases, the specimen contact temperature climbs, and the oxidation reaction gradually becomes full. Oxidative wear and adhesive wear alternately play a dominant role in the friction, and the wear rate first decreases and then increases sharply.

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.

Self-loosening behavior of bolted joints subjected to dynamic shear load

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940009
Author(s):  
Junbo Zhou ◽  
Jianhua Liu ◽  
Huajiang Ouyang ◽  
Zhenbing Cai ◽  
Jinfang Peng ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Adhesive Wear ◽  
Critical Value ◽  
Bolted Joints ◽  
Shear Load ◽  
Oxidative Wear ◽  
Dynamic Shear ◽  
Tightening Torque ◽  
Load Amplitude ◽  
Quenched And Tempered Steel

The loosening experiments of bolted joints under shear load have been carried out. The effects of the initial tightening torque, the shear load amplitude, and the material of bolts on loosening behavior are studied. The results indicate that there exists a critical value for the shear load amplitude, below which complete loosening would not occur. It is also found that the bolted joints made of quenched and tempered steel and stainless steel have a significant anti-loosening performance. Damage mechanisms of the contact thread surfaces are adhesive wear, delamination and oxidative wear.

Adhesive wear characteristics of cast nitrogenated stainless steel

Wear ◽  
1995 ◽  
Vol 184 (2) ◽  
pp. 241-244 ◽  
Author(s):  
A. Basak ◽  
D.K. Roy ◽  
G.L. Dutta
Keyword(s):  
Stainless Steel ◽  
Adhesive Wear ◽  
Wear Characteristics

Influence of DC Steady Magnetic Field on Friction and Wear Characteristics of Friction Pair of High-Speed Steel / 2Cr13 Stainless Steel

2011 ◽  
Vol 291-294 ◽  
pp. 1521-1525 ◽  
Author(s):  
Yong Hui Wei ◽  
Yong Zhen Zhang ◽  
Yue Chen ◽  
San Ming Du
Keyword(s):  
Magnetic Field ◽  
Stainless Steel ◽  
High Speed ◽  
Friction And Wear ◽  
Friction Pair ◽  
High Speed Steel ◽  
Wear Loss ◽  
Wear Characteristics ◽  
Steady Magnetic Field ◽  
Friction And Wear Characteristics

The influence of DC steady magnetic field on dry-sliding Friction and wear characteristics of friction pair of high-speed steel (HSS) ring and 2Cr13 pin is studied by use of improved MPV-1500 type Friction and wear tester under normal temperature. Experiments show that, The wear loss of both HSS ring and 2Cr13 pin decreases gradually, along with the enhancement of the magnetic field intensity, under the load of 250N and the friction velocity of 0.6m/s; The phenomenon of negative wear loss appears to the HSS ring. The wear loss of the sample HSS ring keeps low comparing with that of the sample 2Cr13 stainless steel pin; The trend of friction coefficients decreases quickly and then slowly; Magnetic field can accelerate oxidization.

scholarly journals Microstructure and Wear Resistance of Multi-Layer Ni-Based Alloy Cladding Coating on 316L SS under Different Laser Power

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 781
Author(s):  
Shaoxiang Qian ◽  
Yibo Dai ◽  
Yuhang Guo ◽  
Yongkang Zhang
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Abrasive Wear ◽  
Laser Power ◽  
316L Stainless Steel ◽  
Adhesive Wear ◽  
Cladding Layer ◽  
Metallurgical Bonding ◽  
Equiaxed Grains

We prepared three kinds of Ni based alloy cladding coatings on 316L stainless steel at different power levels. The microstructure of the cladding layer was observed and analyzed by XRD, metallographic microscope, and SEM. The hardness of the cladding layer was measured, and the wear resistance of it was tested by a friction instrument. The results show that the effect of laser cladding is good, and it has good metallurgical bonding with the substrate. Different microstructures such as dendritic and equiaxed grains can be observed in the cladding layer. With the increase in laser power, more equiaxed and columnar dendrites can be observed. The phase composition of the cladding layer is mainly composed of γ–Ni solid solution and some intermetallic compounds such as Ni3B, Cr5B3, and Ni17Si3. The results of EDS show that there are some differences in the distribution of C and Si between dendrites. The hardness of the cladding layer is about 600 HV0.2, which is about three times of the substrate (~200 HV0.2). Through the analysis of the wear morphology, the substrate wear is serious, there are serious shedding, mainly adhesive wear, and abrasive wear. However, the wear of the cladding layer is slight, which is abrasive wear, and there are some grooves on the surface.

scholarly journals Microstructure and Wear Resistance of Multi-Layer NI-Based Alloy Cladding Coating on 316l SS Under Different Laser Power

2020 ◽  
Author(s):  
Qian Shaoxiang ◽  
Zhang Yongkang ◽  
Dai Yibo ◽  
Guo Yuhang
Keyword(s):  
Solid Solution ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Abrasive Wear ◽  
Laser Power ◽  
316L Stainless Steel ◽  
Adhesive Wear ◽  
Cladding Layer ◽  
Metallurgical Bonding ◽  
Equiaxed Grains

Three kinds of Ni based alloy cladding coatings were prepared on 316L stainless steel at different power. The microstructure of the cladding layer was observed and analyzed by XRD, metallographic microscope and SEM. The hardness of the cladding layer was measured, and the wear resistance of the cladding layer was tested by friction instrument. The results show that the effect of laser cladding is good and the cladding layer has a good metallurgical bonding with the substrate. Different microstructures such as dendritic and equiaxed grains can be observed in the cladding layer. With the increase of laser power, more equiaxed and columnar dendrites can be observed. The phase composition of the cladding layer is mainly composed of γ - Ni solid solution and some intermetallic compounds such as Ni3B, Cr5B3 and Ni17Si3. The results of EDS show that there are some differences in the distribution of C and Si between dendrites. The hardness of the cladding layer is about 600 HV0.2, which is about three times of the substrate (~ 200 HV0.2). Through the analysis of the wear morphology, the substrate wear is serious, there are serious shedding, mainly adhesive wear and abrasive wear. However, the wear of cladding layer is slight, which is abrasive wear, and there are some grooves on the surface.

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