Vlastnosti plazmově stříkaných směsí oxidů hliníku a chromu

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F04%3A00025673" target="_blank" >RIV/61389021:_____/04:00025673 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Properties of plasma sprayed alumina-chromia mixtures

Popis výsledku v původním jazyce

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 ?-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(R). 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 acertain 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 ?-phase is partially stabilized.

Název v anglickém jazyce

Properties of plasma sprayed alumina-chromia mixtures

Popis výsledku anglicky

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 ?-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(R). 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 acertain 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 ?-phase is partially stabilized.

Druh

D - Stať ve sborníku

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F01%2F0958" target="_blank" >GA106/01/0958: Optimalizace elastických konstant pro tenzometrické aplikace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2004

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Conference Proceedings of the International Thermal Spray Conference 2004

ISBN

3-87155-792-7

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

DVS-Dusseldorf, Germany

Místo vydání

Dusseldorf

Místo konání akce

Osaka

Datum konání akce

10. 5. 2004

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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