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SOLAR FURNACE: THERMAL SHOCK BEHAVIOUR OF TIB2 COATING ON STEEL

1 KOVÁČIK Jaroslav
Co-authors:
2 EMMER Štefan 3 RODRIGUEZ Jose 3 CAÑADAS Inmaculada
Institutions:
1 IMMM SAS, Bratislava, Slovakia, EU, ummsjk@savba.sk
2 Slovak University of Technology, IVMA STU, Bratislava, Slovakia, EU, stefan.emmer@stuba.sk
3 Plataforma Solar de Almeria, Tabernas (Almeria), Spain, EU, jrodriguez@psa.es, icanadas@psa.es
Conference:
23rd International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 21 - 23, 2014
Proceedings:
Proceedings 23rd International Conference on Metallurgy and Materials
Pages:
863-868
ISBN:
978-80-87294-52-9
ISSN:
2694-9296
Published:
18th June 2014
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
199 views / 95 downloads
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Abstract

The 37MnSi5 steel samples were coated by TiB2 ceramic using electro spark deposition. Then the thermal shock behavior of coated and uncoated steel samples was observed using 5kW vertical solar furnace at Plataforma Solar de Almeria, Spain. The microstructure and micro hardness of the samples were observed before and after solar shock treatment. It was observed that used coatings due to good thermal conductivity lowers the maximal temperature observed in steel substrate thus enabling better dissipation of the maximum temperature into the steel sample. Together with good resistance to various chemicals also at higher temperature it seems that TiB2 is promising for surface coatings of solar heat receivers made from high temperature steels.

Keywords: coating, TiB2, steel, wear resistant coating, solar furnace

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