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Effect of Heat Treatment on the Microstructure and Properties of HVOF-Sprayed Co-Cr-W Coating
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SYSNO ASEP 0472798 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of Heat Treatment on the Microstructure and Properties of HVOF-Sprayed Co-Cr-W Coating Tvůrce(i) Houdková, Š. (CZ)
Smazalová, E. (CZ)
Pala, Zdeněk (UFP-V) RIDZdroj.dok. Journal of Thermal Spray Technology. - : Springer - ISSN 1059-9630
Roč. 25, č. 3 (2016), s. 546-557Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova ASTM ; G-65ASTM ; Co-Cr-W ; heat treatment ; HVOF ; Stellite 6 ; wear Vědní obor RIV JK - Koroze a povrchové úpravy materiálů Institucionální podpora UFP-V - RVO:61389021 UT WOS 000374269200015 EID SCOPUS 84957439729 DOI 10.1007/s11666-015-0365-5 Anotace Co-Cr-W HVOF-sprayed protective coatings are used for their high oxidation and wear resistance. Apart from the oxidation resistance, the stability of their mechanical properties in relation to thermal loading is crucial with respect to the most common high-temperature application areas. This work is focused mainly on evaluation of the heat-induced changes in the phase composition and related mechanical properties. It was shown that the original powder, composed fully from face-centered cubic Co-based alloy, partly changes its phase composition during spraying to a hexagonal close-packed (hcp) structure. The annealing further increases the ratio of the hcp phase in the structure. The heat-induced phase changes are accompanied by an increase in the coatings' hardness and cohesion strength. The abrasive and adhesive wear behavior was evaluated. While the coatings' heat treatment had a positive effect on the coefficient of friction, the abrasive and adhesive wear resistance of annealed coating was lower compared to as-sprayed coating. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2017
Počet záznamů: 1