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THE DECREASING OF POROSITY DURING DIFFUSION TECHNOLOGY

1 NGUYEN Chien Huu
Co-authors:
1 DRAŽAN Tomáš 1 HORNÍČEK Jakub 1 KONEČNÁ Hana 1 DVOŘÁKOVÁ Renata 1 NAVRÁTIL Oldřich
Institution:
1 Department of Mechanical Engineering, University of Defence in Brno, Kounicova 65,662 10 Brno, Czech Republic
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
1110-1114
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2019.900
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
498 views / 205 downloads
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Abstract

The article deals with porosity of compound layers after gas and plasma nitriding. Experiments are focused on using of gas and plasma nitriding processes for surface treatment. Diffusion technologies were applied to steels C 35 (sample A1) and steel 41Cr4 (sample A2), which were subsequently evaluated by electron microscopy, GDOES, XRD and microhardness methods. Main task was to compare the surface hardness connected with chemical composition of steels and the porosity after plasma and gas nitriding and finally prepare the documentation of pores from surface and from cross sectional structure. Plasma and gas processes were applied for increasing of surface hardness of material in depth and improve mechanical and tribological properties. Mechanical and tribological properties of tested material were significantly increased.

Keywords: alloying elements; nitrided layer; porosity; chemical composition

© 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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