COMPARATIVE STUDY OF ZINC COATINGS TRIBOLOGICAL PROPERTIES IN A DRY FRICTION CONDITIONS

1 SKOTNICKI Wojciech
Co-authors:
1 JĘDRZEJCZYK Dariusz 2 SZŁAPA Ilona
Institutions:
1 University of Bielsko-Biala, ul. Willowa 2, Poland, E-mail address: wskotnicki@ath.bielsko.pl, djedrzejczyk@ath.bielsko.pl
2 BISPOL SA 43-300 Bielsko-Biała, Towarowa 30, E-mail address: iszlapa@bispol.com.pl
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
977-982
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
101 views / 73 downloads
Abstract

The paper presents a comparative study of zinc coatings tribological properties in dry friction conditions in the context of assessing coating wear intensity. For this purpose, three zinc coatings were analyzed: hot-dip, galvanic and lamellar, put to steel bolts made of 23MnB4 steel normally applied in the automotive industry. The tests were conducted using a T-11 tester. As a result of tribological tests the friction coefficient of investigated coatings were determined. The investigations were supplemented by nano-hardness measurements using the Anton Paar NHT2 device. In addition, the microscopic analysis of the surface changes supplemented by surface texture measurements was conducted in order to clarify the destruction mechanisms. Based on the studies, the diversity of the tribological properties of the tested coatings was evaluated. Results achieved for steel samples were compared to the results that were determined in earlier studies for samples made of EN-GJL-250 grey cast iron. It has been shown that the tested coatings on both the steel and the cast iron have similar tribological properties, and the most wear resistant zinc coating is a lamella.

Keywords: Tribological wear, friction coefficient, zinc, nano-hardness

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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