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Properties of plasma sprayed alumina-chromia mixtures
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SYSNO ASEP 0025673 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Properties of plasma sprayed alumina-chromia mixtures Překlad názvu Vlastnosti plazmově stříkaných směsí oxidů hliníku a chromu Tvůrce(i) Dubský, Jiří (UFP-V) RID
Řidký, V. (CZ)
Chráska, Pavel (UFP-V) RID
Kolman, Blahoslav Jan (UFP-V)Zdroj.dok. International Thermal Spray Conference & Exposition, ITSC 2004. - Dusseldorf : DVS-Dusseldorf, Germany, 2004 - ISBN 3-87155-792-7 Rozsah stran 030.pdf Poč.str. 8 KB Forma vydání CD-ROM - CD-ROM Akce International Thermal Spray Conference 2004, Thermal Spray Solutions, Advances in Technology and Applications Datum konání 10.05.2004-12.05.2004 Místo konání Osaka Země JP - Japonsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova Plasma spraying ; coating ; alumina ; chromia ; structure Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GA106/01/0958 GA ČR - Grantová agentura ČR Anotace One of the very important factors, often neglected, determining the final properties of a plasma sprayed deposit is its phase composition. It is well known that spraying of Alumina results usually in formation of other phases than the desired hard α-phase (corundum) unless stabilizing admixture is added into the feedstock. In this work Chromia was used for stabilization and feedstock powders with 0, 8 and 33 wt % of Chromia, and unalloyed Chromia, were used to produced coatings by WSP®. Two types of feedstocks were used: fused/crushed and a mixture of Alumina and Chromia powders. The effect of the Chromia content on phase composition, residual stresses, hardness and wear abrasion of coatings was studied. It has been proved by the microanalysis that a certain amount of Cr is transferred into Alumina particles during the "in-flight" reaction of both powders in the plasma jet. Complex "alloy" oxides form where part of Al is replaced by Cr and the α-phase is partially stabilized. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2006
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