Phase Formation Control in Plasma Sprayed Alumina?Chromia Coatings

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F11%3A00367138" target="_blank" >RIV/61389021:_____/11:00367138 - 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

Phase Formation Control in Plasma Sprayed Alumina?Chromia Coatings

Popis výsledku v původním jazyce

Alumina is an inexpensive material often used as feedstock for plasma spraying. Hard corundum (?-Al2O3) is desirable in coatings, but other phases, unstable at elevated temperatures, also form as result of the complexity of the spraying processes. When chromia (Cr2O3) is added to Al2O3 a complex corundum type ?-(Al,Cr)2O3 phase forms in the deposits. Two types of Al2O3/Cr2O3 powder feedstock with 2%, 8%, 33% and 50% Cr2O3 were sprayed: fused materials and mixtures of Al2O3 and Cr2O3 powders. Coatings were made by the water-stabilized plasma (WSP) system and by commercial atmospheric plasma spraying (APS) and compared by various characterization techniques, including X-ray diffraction, scanning elektron microscopy and microanalysis. Coatings made from fused feedstock by both spraying methods contain the corundum phase with its fraction increasing with increasing Cr2O3 content. In case of mixed feedstock the stabilization effect was observed for WSP spraying only.

Název v anglickém jazyce

Phase Formation Control in Plasma Sprayed Alumina?Chromia Coatings

Popis výsledku anglicky

Alumina is an inexpensive material often used as feedstock for plasma spraying. Hard corundum (?-Al2O3) is desirable in coatings, but other phases, unstable at elevated temperatures, also form as result of the complexity of the spraying processes. When chromia (Cr2O3) is added to Al2O3 a complex corundum type ?-(Al,Cr)2O3 phase forms in the deposits. Two types of Al2O3/Cr2O3 powder feedstock with 2%, 8%, 33% and 50% Cr2O3 were sprayed: fused materials and mixtures of Al2O3 and Cr2O3 powders. Coatings were made by the water-stabilized plasma (WSP) system and by commercial atmospheric plasma spraying (APS) and compared by various characterization techniques, including X-ray diffraction, scanning elektron microscopy and microanalysis. Coatings made from fused feedstock by both spraying methods contain the corundum phase with its fraction increasing with increasing Cr2O3 content. In case of mixed feedstock the stabilization effect was observed for WSP spraying only.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

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Projekt

<a href="/cs/project/GA106%2F08%2F1240" target="_blank" >GA106/08/1240: Fyzikální vlastnosti plazmaticky nanášených vysokotavitelných materiálů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Ceramics - Silikáty

ISSN

0862-5468

e-ISSN

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Svazek periodika

55

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

7

Strana od-do

294-300

Kód UT WoS článku

000297615100015

EID výsledku v databázi Scopus

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