Influence of Surface Modification on Tribological Properties of Elastomer Composites

2020 ◽  
pp. 165-213
Author(s):  
Dariusz M. Bielinski ◽  
Mariusz Sicinski ◽  
Jacek Jagielski
Keyword(s):  
Surface Modification ◽  
Tribological Properties ◽  
Elastomer Composites

scholarly journals Comparative Study on the Friction Property of Bearing Steel Modified Bygraphite/MoS2 Composite Coating and Manganese Phosphate Coating

2019 ◽  
Vol 25 (4) ◽  
pp. 383-393 ◽  
Author(s):  
Libin ZANG ◽  
Yong CHEN ◽  
Lixin RAN ◽  
Yang ZHENG ◽  
Kai LI ◽  
...  
Keyword(s):  
Surface Modification ◽  
Tribological Properties ◽  
High Performance ◽  
Contact Fatigue ◽  
Bearing Steel ◽  
Phosphate Coating ◽  
Wear Properties ◽  
Fatigue Wear ◽  
Manganese Phosphate ◽  
Lubrication Performance

Surface modification is an important method to improve the contact fatigue life of transmission parts. The preparation of high performance coating with good tribological properties on the gears and bearings has become the research trends. This paper presents graphite/MoS2 composite spray and manganese phosphate conversion coating prepared on the AISI52100 steel surface and investigates their anti-fatigue mechanism. The tribological properties of the modified layers were studied using a SRV-IV multifunctional friction and wear tester. The microstructure and interfacial components of the coating and wear surfaces were analyzed by SEM and EDS, respectively. The surface morphology and phase composition of the coating were evaluated through laser 3D microscopy and XRD analyses, respectively. Both modified layers showed good anti-friction and anti-wear properties. The friction coefficients of the surfaces modified by manganese phosphate coating and graphite/MoS2 decreased by 7 % and 14 %, respectively, and the corresponding extreme pressure properties increased by 11 % and 55 %, respectively. But the mechanism of anti-fatigue wear and the corresponding interfacial phenomena of the surface modification of the graphite/MoS2 composite spraying layer is different from those of manganese phosphate coating. The hard-ceramic particles with graphite and MoS2 are sprayed on the substrate to obtain the surface hardening layer, resulting in higher wear resistance. The graphite and MoS2 modified layer can greatly reduce the friction coefficient and improve the lubrication performance on the surface. Manganese phosphate coating serves as a chemical soft coating and is filled with rough corrugated caused by surface processing, which induces an ideal meshing surface after initial friction phase. The obtained hole-shaped structure and "infiltration" role contribute to the storage of lubricants and thus improves the lubrication performance.

Surface Modification of Metallic Biomaterials for Better Tribological Properties: A Review

2017 ◽  
Vol 42 (11) ◽  
pp. 4493-4512 ◽  
Author(s):  
Zahid A. Uwais ◽  
Mohamed A. Hussein ◽  
M. Abdul Samad ◽  
Naser Al-Aqeeli
Keyword(s):  
Surface Modification ◽  
Tribological Properties ◽  
Metallic Biomaterials

Surface modification of ceramics for improved tribological properties

2000 ◽  
Vol 26 (4) ◽  
pp. 363-370 ◽  
Author(s):  
K.-H. Zum Gahr ◽  
J. Schneider
Keyword(s):  
Surface Modification ◽  
Tribological Properties

Wear Behavior of Laser-Hardened GCr15 Steel under Lubricated Sliding Conditions

2009 ◽  
Vol 628-629 ◽  
pp. 697-702 ◽  
Author(s):  
Sheng Lei ◽  
Quan Kun Liu ◽  
Yu Ping Liu ◽  
Heng Li
Keyword(s):  
Wear Resistance ◽  
Surface Modification ◽  
Wear Rate ◽  
Tribological Properties ◽  
Wear Mechanism ◽  
Sliding Wear ◽  
Laser Surface ◽  
Ferrous Alloys ◽  
Gcr15 Steel ◽  
Lubricated Sliding

Microstructure, microhardness and tribological properties of laser hardened GCr15 steel were investigated in this paper. The wear resistance under lubricated sliding conditions was compared between specimens treated with laser and those of conventionally hardened. The tribological properties of laser surface-quenched GCr15 steel specimens were slightly better due to the effects of the microstructure hardening, high hardness and toughness, with the wear rate (in the order of 10-6mg/Nm) lower than that of the conventionally treated specimens. At the steady state, the frictional coefficient of laser-treated samples had no obvious difference from that of the conventionally treated samples. The wear mechanism for both cases was similar, generally involved surface fatigue wear and slight abrasion wear. LeiQ.K. Liu S. Lei Introduction H. Li In recent years, among the various surface modification methods, laser-induced surface modification has gained much attention for achieving the desired properties for applications[1]. This method is mainly used for ferrous alloys which undergo martensitic transformation and thus form a very hard surface layer with negligible surface roughness and distortion[2]. Some ideas demonstrated that the wear rate at a particular contact pressure can be strongly influenced by the microstructure of the steel, but there is also contrary idea that under the conditions of mild wear, the microstructural constituents of steels have no significant influence on the wear rate, although they affect the rate of severe wear. Previous studies of the authors demonstrated that under the dry sliding wear conditions, laser surface-hardened specimens of ferrous alloys exhibited enhanced wear resistance than conventionally hardened specimens. The aim of the study is to investigate the lubricated sliding wear behaviors of laser surface hardened GCr15 steel specimens and to compare the effect of the different microstructure compositions for laser transformation hardening with those of conventionally hardened and quenched. Moreover, the wear properties of the GCr15 steel and its corresponding wear mechanism under the lubricated wear conditions will also be studied.

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