Friction Behavior of a Textured Surface against Several Materials under Dry and Lubricated Conditions

This paper reports research on the frictional behavior of a textured surface against several materials under dry and lubricated conditions, and this is aimed to provide design guidelines on the surface texturing for wide-ranging industrial applications. Experiments were performed on a tribo-tester with the facility of simulating A ball-on-plate model in reciprocating motion under dry, oil-lubricated, and water-lubricated conditions. To study the frictional behavior of textured SiC against various materials, three types of ball-bearing –elements, 52100 steel, silicon nitride (Si3N4), and polytetrafluoroethylene (PTFE), were used. Friction and wear performance of an un-textured surface and two types of widely used micro-scale texture surfaces, grooves and circular dimples, were examined and compared. The results demonstrated that the effect of surface textures on friction and wear performance is influenced by texture parameters and the materials of friction pairs. The circular-dimple texture and the groove texture, with certain texture parameters, played a positive role in improving friction and wear performance under specific operating conditions used in this research for SiC–steel and SiC–Si3N4 friction pairs; however, there was no friction and wear improvement for the textured SiC–PTFE friction pair. The results of this study offer an understanding and a knowledge base to enhance the performance of bearing elements in complex interacting systems.

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Friction and Wear Performance of Various Polymer Coatings for Journal Bearings under Stop Start Sliding

Lubricants ◽

10.3390/lubricants8010001 ◽

2019 ◽

Vol 8 (1) ◽

pp. 1

Author(s):

Florian Summer ◽

Florian Grün ◽

Emma R Ravenhill

Keyword(s):

Friction And Wear ◽

Combustion Engine ◽

Polymer Coatings ◽

Journal Bearings ◽

Operating Conditions ◽

Wear Performance ◽

Set Up ◽

Many Core ◽

The Given

Increasing environmental legislation and demands for improved fuel economy performance have resulted in the introduction of various measures to optimize the internal combustion engine. Many of these actions significantly change the operating conditions of the engines and bring with them new challenges that original engine manufacturers (OEMs) have to solve. One example is stop start technology, which changes the operation of many core parts of engines such as journal bearings. Hence, the current paper deals with this topic. In particular, different polymer coated bearings have been studied regarding their friction and wear performance under stop start sliding. Detailed material characterization of the materials was carried out using light microscopy and scanning electron microscopy. Furthermore, tribometric tests were conducted under controlled and similar conditions on a TE92 tribometer using a bearing segment test set up. The results show that the various polymer coated bearings tested provide enhanced friction and wear performance in comparison to other bearing types (e.g., lead-based electroplated) and that friction and wear performance differs also among them. In this regard, a higher amount of solid lubricant fillers and a dense filler structure appears to be beneficial under the given test conditions.

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Study on Friction and Wear of Several Metal Materials under Oil Lubrication

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.764.55 ◽

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.

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Friction and Wear Characteristics of Magneto-Rheological Elastomers Based on Silicone/Polyurethane Hybrid

Journal of Tribology ◽

10.1115/1.4029942 ◽

2015 ◽

Vol 137 (3) ◽

Cited By ~ 21

Author(s):

Chenglong Lian ◽

Kwang-Hee Lee ◽

Chul-Hee Lee

Keyword(s):

Friction And Wear ◽

Matrix Material ◽

Operating Conditions ◽

Wear Depth ◽

Test Results ◽

Wear Properties ◽

Wear Performance ◽

Friction And Wear Properties ◽

Magneto Rheological ◽

Mr Effect

The friction and wear properties of four different types of magneto-rheological (MR) elastomer were investigated. The MR elastomers have different matrix materials and structures. Most MR elastomers have a silicone matrix, since it has a more significant MR effect under a magnetic field compared to other materials. The mechanical properties of silicone, however, are poor compared to other materials, so it is difficult to use them in engineering applications. Therefore, a new polyurethane matrix material was used to enhance the friction and wear properties of MR elastomer. Additionally, two different matrix materials (silicone and polyurethane) were synthesized, and MR elastomers were structurally combined to improve the friction and wear performance. The friction characteristics of each MR elastomer were evaluated under reciprocating operating conditions. Wear depth was also measured to estimate the wear resistance. The test results show that the friction and wear performance of the modified MR elastomers are enhanced compared with the silicone-based MR elastomer.

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Tribological Performance of Nanocomposite Carbon Lubricant Additive

Materials ◽

10.3390/ma12010149 ◽

2019 ◽

Vol 12 (1) ◽

pp. 149 ◽

Cited By ~ 2

Author(s):

Chuanyi Xue ◽

Shouren Wang ◽

Daosheng Wen ◽

Gaoqi Wang ◽

Yong Wang

Keyword(s):

Friction And Wear ◽

Frictional Contact ◽

Adhesive Wear ◽

Friction Pair ◽

Lubricant Additive ◽

Suspension Stability ◽

Wear Performance ◽

Base Oil ◽

Test Conditions ◽

Friction And Wear Characteristics

In this research, nanocomposite carbon has been found to have excellent tribological properties as a lubricant additive. To reduce high friction and wear in friction pairs, the modified nanocomposite carbon has been prepared for chemical technology. The morphology and microstructure of the modified nanocomposite carbon were investigated via TEM, SEM, EDS, XPS, and Raman. In this study, varying concentrations (1, 3, and 5 wt. %) within the modified nanocomposite carbon were dispersed at 350 SN lubricant for base oil. The suspension stability of lubricating oils with the modified nanocomposite carbon was determined by ultraviolet-visible light (UV-VIS) spectrophotometry. The friction and wear characteristics of lubricants containing materials of the modified nanocomposite carbon were evaluated under reciprocating test conditions to simulate contact. The morphology and microstructure of the friction pair tribofilms produced during frictional contact were investigated via SEM, EDS, and a 3D surface profiler. The results showed that scratches, pits, grooves, and adhesive wear were significantly reduced on the surface of the friction pair which was used with 3% nanocomposite carbon lubricant. Additionally, the modified nanocomposite carbon showed excellent friction reducing and anti-wear performance, with great potential for the application of anti-wear.

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Friction and wear performance of lubricated micro-textured surface formed by laser processing

Surface Engineering ◽

10.1080/02670844.2021.1952041 ◽

2021 ◽

pp. 1-9

Author(s):

Quan Wan ◽

Pingyu Gao ◽

Zhiqiang Zhang

Keyword(s):

Laser Processing ◽

Friction And Wear ◽

Textured Surface ◽

Wear Performance

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Influence of Different Surface Texture Parameters on the Contact Performance of Piston Ring-Sleeve Friction Pair of Hydraulic Cylinders

Advances in Materials Science and Engineering ◽

10.1155/2021/5495995 ◽

2021 ◽

Vol 2021 ◽

pp. 1-12

Author(s):

Wen’an Wang ◽

Zhiqi Liu ◽

Dongliang Chen ◽

Zhiming Xie ◽

Jianli Song

Keyword(s):

Friction Coefficient ◽

Surface Texture ◽

Surface Density ◽

Friction And Wear ◽

Piston Ring ◽

Friction Pair ◽

Wear Characteristics ◽

Texture Parameters ◽

Cylinder Piston ◽

Friction And Wear Characteristics

The surface texture, a major way to decrease friction and wear of the cylinder-piston ring friction pair, was conducted on cylinder-piston ring friction pair specimen using the orthogonal experimental design method to investigate the effect of different texture parameters (size, depth, shape, and surface density) of the friction and wear characteristics. Through simulation analysis, the texture parameters that affect the friction and wear characteristics are obtained. Using the evaluation method of friction coefficient and mass wear rate, the influence sequence and optimal values of texture parameters that affect friction and wear characteristics are obtained through range analysis. The results show that, after surface texture treatment under mixed lubrication conditions, the friction characteristics of the friction pair have changed and the friction coefficient and friction and wear rate have been significantly reduced. The results show that the triangular texture has a good antifriction effect, the texture depth is deepened, and the surface density and the size increases have a positive effect on the improvement of friction and wear. An ultra-depth microscope was used to observe the wear morphology of the friction and wear tests. The results show that the weakening of the third body wear by the texturing treatment and the maintenance of oil lubrication are the main reasons for reducing friction and wear.

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Friction and wear performance of laser peen textured surface under starved lubrication

Tribology International ◽

10.1016/j.triboint.2014.04.017 ◽

2014 ◽

Vol 77 ◽

pp. 97-105 ◽

Cited By ~ 67

Author(s):

Kangmei Li ◽

Zhenqiang Yao ◽

Yongxiang Hu ◽

Weibin Gu

Keyword(s):

Friction And Wear ◽

Textured Surface ◽

Wear Performance ◽

Starved Lubrication

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TRIBOLOGICAL PERFORMANCE OF MODIFIED FLOCCULENT GRAPHITE AS LUBRICANT ADDITIVES

Surface Review and Letters ◽

10.1142/s0218625x19501087 ◽

2019 ◽

Vol 27 (02) ◽

pp. 1950108

Author(s):

CHUAN YI XUE ◽

SHOU REN WANG ◽

JIN FENG LENG ◽

YONG WANG ◽

GAO QI WANG

Keyword(s):

Friction And Wear ◽

Piston Ring ◽

Gasoline Engine ◽

Adhesive Wear ◽

Friction Pair ◽

Cylinder Liner ◽

Lubricant Additive ◽

Suspension Stability ◽

Wear Performance ◽

Friction And Wear Characteristics

In this research, graphite has been found to have excellent tribological properties as a lubricant additive. To reduce high friction and wear in cylinder liner piston ring friction pairs, modified flocculent graphite have been prepared via chemical technology. The morphology and microstructure of modified flocculent graphite were investigated via SEM, EDS, XRD and IR. In this study, varying concentrations (0.1, 0.5, and 0.9 wt.%) within modified flocculent graphite were dispersed at 350 SN lubricant for Gasoline Engine. Suspension stability of the lubricating oils with modified flocculent graphite and graphite as determined by ultraviolet-visible light (UV-VIS) spectrophotometry. The friction and wear characteristics of lubricants containing materials of modified flocculent graphite were evaluated under reciprocating test conditions to simulate contact. The morphology and microstructure of the friction pair tribofilms produced during frictional contact were investigated via SEM, EDS and a 3D surface profiler. The results show that scratching, pits, furrows and adhesive wear took place, respectively, on the worn surfaces of friction pairs. But, modified flocculent graphite showed excellent friction reducing and anti-wear performance and subsequently has great potential for the application of anti-wear.

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Effect of Coating Thickness on Tribological Performance of CrN in Dry Sliding Contact

ASME/STLE 2012 International Joint Tribology Conference ◽

10.1115/ijtc2012-61172 ◽

2012 ◽

Cited By ~ 3

Author(s):

C. Lorenzo Martin ◽

O. O. Ajayi ◽

S. Torrel ◽

N. Demas ◽

A. Erdemir ◽

...

Keyword(s):

Coating Thickness ◽

Friction And Wear ◽

Steel Substrate ◽

Friction Behavior ◽

Wear Performance ◽

Thin Film Coatings ◽

Sliding Test ◽

Forming Tools ◽

Thick Coatings ◽

Crn Coatings

One of the most commonly used tribological thin-film coatings is Chromium Nitride (CrN), typically deposited by PVD process. Examples of current applications of this coating include cutting and forming tools: ICE piston ring, hydrodynamic pumps, etc. In selecting coating for tribological applications, one of the critical parameter is the coating thickness. In the present work, we experimentally studied the effect of coating thickness on friction and wear performance of CrN coatings under unidirectional sliding. Test were conducted with ∼ 1, 5 and 10 microns thick coatings deposited on a hardened H-13 steel substrate by plasma enhanced magnetron sputtering (PEMS) process. The friction behavior was strongly dependent on coating thickness, especially at relatively low loads. At higher load however, the thinner coating (1 μm) was quickly worn through while the thicker ones (5 and 10 μm) remained intact. Wear in both, the counterface WC material and the coating was also observed to depend on coating thickness. The observed effect on coating thickness on tribological behavior is attributed to differences in the microstructure and mechanical behaviors of coatings as function of thickness.

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