SELECTED PROPERTIES OF ALLOY 400 PROTECTIVE COATINGS COVERING CUZN30 BY ESD TECHNIQUE

1 MŁYNARCZYK Piotr
Co-authors:
1 DEPCZYŃSKI Wojciech 2 JASIONOWSKI Robert 3 SKOWRON Marek
Institutions:
1 Kielce University of Technology, Poland, EU, piotrm@tu.kielce.pl, wdep@tu.kielce.pl
2 Maritime University, Poland, EU, r.jasionowski@am.szczecin.pl
3 Mesko S.A., Skarżysko-Kamienna, Poland, EU, marek.skowron.sk@gmail.com
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
1246-1251
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
20 views / 4 downloads
Abstract

This paper presents the results of investigation considering the morphology of surface layers produced by electro-spark deposition (ESD). It is a pulsed micro-welding process used for small scale and precision repair of high value worn or misfabricated components. The consumable electrode material is deposited onto the work piece by means of electric sparks in a manner reverse to spark erosion. In the electro-spark deposition process, the electrode is the anode and the work piece is the cathode. It has been found that the surface layer produced by ESD has good criteria resistance by changing the process parameters and promising protective properties. In the experiment, the coatings were electro-spark deposited with using an Alloy 400 electrode (the anode) - onto samples made of CuZN30 Bras (the cathode). The morphology of the layers is shown in the OM and SEM photomicrographs. As a result of the electric discharge, diffusion of individual elements was observed. For diffusion observations, ESD analyzes were performed on the cross-section of the produced layer. Microhardness measurements were also carried out.

Keywords: Electro-spark deposition, ESD, alloy 400, protective coatings, microstructure
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