Static and kinetic friction of electroless Ni composite coatings

• Autorzy: Vencl A. , Jakimovska K. , Ivanova B. , Ruzic J. , Simeonov S. , Kandeva M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this study was to examine the static and kinetic friction of electroless Ni coatings of different surface roughening, in unlubricated contact with various counter-body materials. In particular, difference between static and kinetic coefficient of friction was analysed. Design/methodology/approach: The Ni coatings deposition was done with electroless plating process. Samples of electroless Ni coatings without and with SiC nanoparticles were heat treated at 300°C for 6 hours. The microstructure of all samples was characterized by optical microscopy. Microhardness of samples and counter-bodies were also examined. The static and kinetic coefficient of friction was measured for each coating with initial and working surface roughness. Three typical materials used in industry were chosen as a counter-body material. The possibility of stick-slip occurrence was analysed through the static and kinetic coefficients of friction difference. Findings: Obtained results show that coatings hardness has strong influence on coefficient of friction, and that slip-stick phenomenon is unlikely to occur, since the differences between static and kinetic coefficient of friction are small. Research limitations/implications: The SiC nanoparticles were added to Ni coating in order to improve the abrasive wear resistance. In the same time, presence of SiC nanoparticles slightly increases the coefficient of friction in unlubricated conditions. Originality/value: The SiC nanoparticles were added to standard electroless Ni coating, and their properties are investigated. Heat treatment was applied to achieve crystalline structure and to improve mechanical and tribological properties. Coefficient of friction testing was performed by simply and easy to operate test rig.

Słowa kluczowe

EN

composites; coatings; friction; stick-slip

PL

kompozyty; powłoki; tarcie; stick-slip

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2015
• Tom: Vol. 70, nr 1
• Strony: 13--21
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Vencl A.

• University of Belgrade, Faculty of Mechanical Engineering, Kraljice Marije 16, 11120 Belgrade 35, Serbia

autor

Jakimovska K.

• Ss. Cyril and Methodius University – Faculty of Mechanical Engineering in Skopje, Karposh II bb, P.O. Box 464, 1000 Skopje, Republica of Macedonia

autor

Ivanova B.

• Faculty of Industrial Technology, Technical University of Sofia, 8 Kliment Ohridski Blvd, 1000 Sofia, Bulgaria

autor

Ruzic J.

• Vinča Institute of Nuclear Sciences, University of Belgrade, Mike Petrovića Alasa 12-14, 11001 Belgrade, Serbia

autor

Simeonov S.

• Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic

autor

Kandeva M.

• Faculty of Industrial Technology, Technical University of Sofia, 8 Kliment Ohridski Blvd, 1000 Sofia, Bulgaria

Bibliografia

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