Wear Behavior and Mechanical Properties of TiO2 Coating Deposited Electrophoretically on 316 L Stainless Steel

2017 ◽  
Vol 140 (3) ◽  
Author(s):  
Hafedh Dhiflaoui ◽  
Khlifi Kaouther ◽  
Ahmed Ben Cheikh Larbi
Keyword(s):  
Mechanical Properties ◽  
Normal Force ◽  
Wear Behavior ◽  
Close Relation ◽  
Fretting Wear ◽  
Sliding Velocity ◽  
Wear Coefficient ◽  
Wear Performance ◽  
Characterization Methods ◽  
316 L Stainless Steel

In this work, the TiO2 coatings were synthesized by electrophoretic deposition (EPD) of nanosized powder in order to improve the tribological properties. Several characterization methods were applied to the coated substrates. The surface topography of the EPD layers, their morphology, composition, and mechanical properties were investigated. The influence of heat treatment, which results in calcination, on the wear performance of coated films was also examined. It was noticed that the effect of the normal force and sliding velocity on the coefficients of instantaneous and stabilized friction was not the same in treated coatings and untreated ones. Moreover, the treated and uncoated films showed a close relation between the dissipated accumulated energy and the worn volume. The energetic wear coefficients of fretting wear were also studied. As expected, the treated coating reduced the energetic wear coefficient, which enhanced the resistance to fretting wear.

scholarly journals Fretting Wear Behavior of Three Kinds of Rubbers under Sphere-On-Flat Contact

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2153
Author(s):  
Tengfei Zhang ◽  
Jie Su ◽  
Yuanjie Shu ◽  
Fei Shen ◽  
Liaoliang Ke
Keyword(s):  
Normal Force ◽  
Wear Behavior ◽  
Displacement Amplitude ◽  
Fretting Wear ◽  
Butadiene Rubber ◽  
Force Frequency ◽  
Sealing Performance ◽  
Rubber Surface ◽  
Sealing Materials ◽  
Flat Contact

Rubbers are widely used in various fields as the important sealing materials, such as window seal, door seal, valve, pump seal, etc. The fretting wear behavior of rubbers has an important effect on their sealing performance. This paper presents an experimental study on the fretting wear behavior of rubbers against the steel ball under air conditions (room temperature at 20 ± 2 °C and humidity at 40%). Three kinds of rubbers, including EPDM (ethylene propylene diene monomer), FPM (fluororubber), and NBR (nitrile–butadiene rubber), are considered in experiments. The sphere-on-flat contact pattern is used as the contact model. The influences of the displacement amplitude, normal force, frequency, and rubber hardness on the fretting wear behavior are discussed in detail. White light profiler and scanning electron microscope (SEM) are used to analyze the wear mechanism of the rubber surface. The fretting wear performances of three rubbers are compared by considering the effect of the displacement amplitude, normal force, frequency, and rubber hardness. The results show that NBR has the most stable friction coefficient and the best wear resistance among the three rubbers.

Effect of Heat Treatment Temperature and Lubricating Conditions on the Fretting Wear Behavior of SAF 2507 Super Duplex Stainless Steel

2019 ◽  
Vol 141 (10) ◽  
Author(s):  
Mengjiao Wang ◽  
Yunxia Wang ◽  
Jianzhang Wang ◽  
Na Fan ◽  
Fengyuan Yan
Keyword(s):  
Heat Treatment ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Duplex Stainless Steel ◽  
Wear Behavior ◽  
Treatment Temperature ◽  
Fretting Wear ◽  
Super Duplex Stainless Steel ◽  
Wear Performance ◽  
Seawater Lubrication

Super duplex stainless steel (SDSS) has excellent mechanical properties and corrosion resistance. However, currently, there are few researches conducted on its fretting wear performance. This paper studies the influence of different heat treatment temperatures and medium environment on the fretting wear performance of SAF 2507 SDSS. Results show that the combined effect of the sigma phase and seawater lubrication can significantly improve the wear resistance of SAF 2507 SDSS. After treated with different heat treatment temperatures, different contents of sigma phases are precipitated out of SAF 2507 SDSS, which improves the wear resistance of the material to different degrees. In addition, the fretting wear performance of SAF 2507 SDSS also relates to the lubrication medium. In air, the friction and wear performance of SAF 2507 SDSS is poor, while in seawater, solution and corrosion products that acted as a lubricant dramatically improve the wear resistance of the material. Under the combined action of heat treatment and seawater lubrication medium, the friction coefficient and wear reduce by 70% and 91%, respectively.

scholarly journals Studying The Effect of Reinforcing by Sicp on The Dry Sliding Wear Behavior and Mechanical Properties of AL- 4% CU Matrix Alloy

2013 ◽  
Vol 6 (2) ◽  
pp. 139-153
Author(s):  
Israa .A.K
Keyword(s):  
Mechanical Properties ◽  
Wear Rate ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Base Material ◽  
Weight Percent ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Sliding Velocity ◽  
Cu Alloy

This research is devoted to study the effect of addition of different weight percent from SiCp ( 2, 4, 6, 8 ) to Al– 4 Cu alloy which have been fabricated by liquid metallurgy method on the dry sliding wear behavior and mechanical properties. Wear characteristics of Al–SiC composites have been investigated under dry sliding conditions and compared with base alloy. Dry sliding wear tests have been carried out using pin-on-disk wear test under normal applied loads 5, 10, 15 and 20 N and at different sliding velocity of (2.7, 3.7, 4.7) m/sec. It was also observed that the wear rate varies linearly with increases normal applied load but lower in composites as compared to the base material. The wear mechanism appears to be oxidative for both Al – Cu alloy and composites under the given conditions of load and sliding velocity as indicated by optical microscopic of the worn surfaces. Further, it was found from the experimentation that the wear rate decreases linearly with increasing weight percent of silicon carbide. The best results have been obtained at 8 % wt SiC . We also observed that the yield strength, tensile strength increases with increasing wt% of SiC , but the ductility decreases.

scholarly journals Microstructures, mechanical properties, and grease-lubricated sliding wear behavior of Cu-15Ni-8Sn-0.8Nb alloy with high strength and toughness

Friction ◽  
2020 ◽  
Author(s):  
Jinjuan Cheng ◽  
Mincong Mao ◽  
Xueping Gan ◽  
Qian Lei ◽  
Zhou Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Normal Load ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Sliding Velocity ◽  
Wear Properties ◽  
Lubricating Grease ◽  
Lubricated Sliding

Abstract Alloys used as bearings in aircraft landing gear are required to reduce friction and wear as well as improve the load-carrying capability due to the increased aircraft weights. Cu-15Ni-8Sn-0.8Nb alloy is well known for possessing good mechanical and wear properties that satisfy such requirements. In this study, the microstructure, mechanical properties, and grease-lubricated sliding wear behavior of Cu-15Ni-8Sn-0.8Nb alloy with 0.8 wt% Nb are investigated. The nanoscale NbNi3 and NbNi2Sn compounds can strengthen the alloy through the Orowan strengthening mechanism. A Stribeck-like curve is plotted to illustrate the relationship among friction coefficient, normal load, and sliding velocity and to analyze the grease-lubricated mechanism. The wear rate increases with normal load and decreases with sliding velocity, except at 2.58 m/s. A wear mechanism map has been developed to exhibit the dominant wear mechanisms under various friction conditions. When the normal load is 700 N and the sliding velocity is 2.58 m/s, a chemical reaction between the lubricating grease and friction pairs occurs, resulting in the failure of lubricating grease and an increase in wear.

Mechanical Properties and Adhesive Scuffing Wear Behavior of Stir Cast Cu–Sn–Ni/Si3N4 Composites

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
R. Nithesh ◽  
N. Radhika ◽  
S. Shiam Sunder
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Wear Rate ◽  
Applied Load ◽  
Wear Behavior ◽  
Testing Machine ◽  
Load Condition ◽  
Sliding Velocity ◽  
Taguchi’S Design Of Experiments ◽  
Sliding Distance

The modern technology developments have seeded for the necessity of composite materials that are incorporated with high hardness, high tensile strength, and better wear properties. Cu–Sn–Ni alloy as well as the composites of varying weight percentage of Si3N4 (5, 10, and 15) are fabricated by liquid metallurgy technique. The alloy and composites are tested for their tensile strength and hardness on Universal Testing Machine and Vickers microhardness tester, respectively. Based on the tests, Cu–Sn–Ni/10 wt. % of Si3N4 is found to have optimum mechanical properties. The scuff type adhesive wear behavior is studied through pin-on-disk tribometer under dry sliding conditions for Cu–Sn–Ni/10 wt. % of Si3N4 composite. Taguchi's design of experiments technique based on L27 orthogonal array model is used for analyses of process parameters in three levels such as applied load (10, 20, and 30 N), sliding distance (500, 1000, and 1500 m), and sliding velocity (1, 2, and 3 m/s). The parameters are ranked based on the signal-to-noise ratio and the analysis of variance approach. Based on wear results, applied load is found to have highest stature on influencing wear rate followed by sliding distance and sliding velocity. A generalized wear rate equation is obtained based on the linear regression model and its feasibility is checked. Scanning electron microscope (SEM) analyses revealed severe delamination occurred on maximum load condition. The development of this copper composite can have the possibility of replacing aluminum bearings.

scholarly journals Wear Performance of Metal Materials Fabricated by Powder Bed Fusion: A Literature Review

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 304 ◽  
Author(s):  
Hongling Qin ◽  
Runzhou Xu ◽  
Pixiang Lan ◽  
Jian Wang ◽  
Wenlong Lu
Keyword(s):  
Wear Resistance ◽  
Dry Friction ◽  
Wear Behavior ◽  
Processing Parameters ◽  
Fretting Wear ◽  
Powder Bed Fusion ◽  
Wear Performance ◽  
Powder Bed ◽  
Wear Rates ◽  
Metal Materials

Powder Bed Fusion (PBF) is an additive manufacturing technology used to produce metal-based materials. PBF materials have a unique microstructure as a result from repeated and sharp heating/cooling cycles. Many researches have been carried out on relations between processing parameters of the PBF technology, obtained microstructures and mechanical properties. However, there are few studies on the tribological properties of PBF materials at various contact conditions. This article describes previous and recent studies related to the friction performance. This is a critical aspect if PBF materials are applied to friction pair components. This paper discusses wear rates and wear mechanisms of PBF materials under dry friction, boundary lubrication and micro-motion conditions. PBF materials have higher hardness due to fine grains. PBF materials have a higher wear resistance than traditional materials due to their solid solution strengthening. In addition, hard particles on the surface of PBF components can effectively reduce wear. The reasonable combination of process parameters can effectively improve the density of parts and thus further improve the wear resistance. This review paper summarized the wear behavior of PBF materials, the wear mechanism of metal materials from dry friction to different lubrication conditions, and the wear behavior under fretting wear. This will help to control the processing parameters and material powder composition of parts, so as to achieve the required material properties of parts and further improve the wear performance.

scholarly journals Experimental Studies on Fretting Wear Behavior of PVDF Piezoelectric Thin Films

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 734
Author(s):  
Yuanjie Shu ◽  
Liaoliang Ke ◽  
Jie Su ◽  
Fei Shen
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Applied Voltage ◽  
Polyvinylidene Fluoride ◽  
Normal Force ◽  
Wear Behavior ◽  
Experimental Studies ◽  
Displacement Amplitude ◽  
Fretting Wear ◽  
Wear Volume

This paper discusses an in-depth experimental study on the fretting wear behavior of PVDF (polyvinylidene fluoride) piezoelectric thin film against a Si3N4 ceramic sphere under air conditions. A fretting wear device with a ball-on-plate contact configuration was applied. The changes of displacement amplitude, normal force, and applied voltage were taken into account. The friction logs were used to determine the contact state of the PVDF thin film during the fretting test. The 3D topography instrument and scanning electron microscope (SEM) were used to measure the details of the surface morphology and wear volume. The test results of PVDF thin films under different normal force, displacement amplitude, and applied voltage are summarized through the collection and analysis of experimental data. It is shown that the creep and plastic deformation lead to obvious winkles at the contact surface, which may decrease the specific wear rate of PVDF thin films.

Influence of Carbon Fabric on Fretting Wear Performance of Polyetherimide Composite

2002 ◽  
Vol 124 (4) ◽  
pp. 834-839 ◽  
Author(s):  
Jayashree Bijwe ◽  
J. Indumathi ◽  
Bhabani K. Satapathy ◽  
Anup K. Ghosh
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Fretting Wear ◽  
Operating Parameters ◽  
Carbon Fabric ◽  
Wear Performance ◽  
Fabric Composite ◽  
Fabric Composites ◽  
Microscopic Studies ◽  
Temperature Amplitude

A carbon fabric composite of Polyetherimide (PEI) was fabricated and studied for fretting wear behavior along with neat PEI. The operating parameters were load, temperature, amplitude and frequency of fretting. It was observed that carbon fabric proved to be significantly beneficial for reducing friction and wear of PEI. The friction coefficient of PEI was quite high and independent of operating parameters. For the carbon fabric composites (CFC) it reduced from 0.3 to 0.18 with an increase in load. On the other hand it showed marginal increase (0.18 to 0.28) with increase in temperature from 25°C to 200°C. The wear rate of the composite, CFC showed little variation with increase in load and temperature. Amplitude and frequency also proved to be important influencing parameters. Microscopic studies proved useful for understanding wear mechanism.

Friction and Wear Performance of Epoxy Resin Reinforced With Boron Nitride Nanoplatelets

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Mürsel Ekrem ◽  
Hayrettin Düzcükoğlu ◽  
Muhammet Ali Şenyurt ◽  
Ömer Sinan Şahin ◽  
Ahmet Avcı
Keyword(s):  
Mechanical Properties ◽  
Heat Conduction ◽  
Boron Nitride ◽  
Epoxy Resin ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Wear Performance ◽  
Friction And Wear Behavior ◽  
Pin On Disk ◽  
Disk Test

In this study, the effects of addition of boron nitride nanoplatelets (BNNPs) upon friction and wear behavior of epoxy resin have been investigated by using pin-on-disk test. It has been reported in the literature that certain amounts of BNNP addition can be useful for enhancement of mechanical properties. Therefore, it is very important to obtain the effect of such addition upon friction and wear performance of epoxy resin. BNNPs have been incorporated at 0.3–0.5–0.7–1 wt %. It is shown that BNNP addition results in decrease in friction coefficient and wear. It is also shown that the best results are obtained with 0.5% nanoplatelet addition. It is also observed that heat conduction of epoxy resin is enhanced by the nanoplatelet addition.

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