The formation of zinc coatings in nanocrystallised zinc powders

• Autorzy: Galin Rashit , Khina Boris , Shaburova Natalia , Wassilkowska Anna

Identyfikatory

DOI

10.37705/TechTrans/e2021009

• Języki publikacji: EN

Abstrakty

EN

The kinetics of and mechanism for galvanising low-carbon steel (0.2% C) were examined in powder media which were pre-treated to obtain a fine nanostructured ZnO layer on the surface of zinc powder particles. The effective diffusion coefficient of Zn atoms through the ZnO shell was estimated to be in the order of 1·10ˉ¹º m²·s­­­­­ˉ¹. The contribution of the Zn-gas evaporation/condensation microprocesses, which could occur in relation to the above diffusion through a nanostructured surface layer, was evaluated with numerical calculations in the temperature range of 550–950 K and for an average particle size of ZnO up to 100 nm. Our results suggest that the outward diffusion of metallic zinc takes place from the core of powder microparticles across the nano-grain boundaries of their modified surface layer, and can be further intensified by the presence of other inter-phase defects, such as nano porosity.

Słowa kluczowe

EN

nanocrystallised powders; galvanising; zinc coatings; coating structure

PL

proszki nanokrystaliczne; cynkowanie; powłoki cynkowe; struktura powłoki

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Technical Transactions
• Rocznik: 2021
• Tom: Vol. 118, iss. 1
• Strony: art. no. e2021009
• Opis fizyczny: Bibliogr. 21 poz., il., wykr., tab., wz.

Twórcy

autor

Galin Rashit

• Vika-Gal Co., Ltd, Chelyabinsk, Russia

autor

Khina Boris

• Physico-technical Institute, National Academy of Sciences of Belarus, Minsk, Belarus

autor

Shaburova Natalia

• South Ural State University (NRU), Chelyabinsk, Russia

autor

Wassilkowska Anna

• Faculty of Environmental and Power Engineering, Cracow University of Technology, Poland

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).