Development of Cold Sprayed Anti-oxidation Ti-doped Al Barriers On gamma-TiAl Substrates

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Development of Cold Sprayed Anti-oxidation Ti-doped Al Barriers On gamma-TiAl Substrates

Popis výsledku v původním jazyce

Four blends of Al doped with various Ti content were prepared and their respective morphology and chemical compositions were specified. Protective layers of the blends designated for deliberate oxidation were then successfully cold-spray deposited onto near-gamma TiAl substrates at 300'C, while preserving their initial chemical composition and retaining its original mutual Al:Ti ratio. No oxidation of the materials during deposition was detected and the porosity of the produced coatings varied between 5.9-27.3%. Heat-treatment in argon atmosphere under various combinations of temperatures and dwell times was carried out in order to induce formation of intermetallic phases within the deposits and compact the layers. Following the treatment, the specimens were subjected to 950'C exposure for 100, 250 and 500hrs, respectively. It was found that the oxidation of the coatings-protected specimens was substantially reduced (an increase in oxide content 1.34 mg/cm2 after 500hrs vs. 1.21 mg/cm2

Název v anglickém jazyce

Development of Cold Sprayed Anti-oxidation Ti-doped Al Barriers On gamma-TiAl Substrates

Popis výsledku anglicky

Four blends of Al doped with various Ti content were prepared and their respective morphology and chemical compositions were specified. Protective layers of the blends designated for deliberate oxidation were then successfully cold-spray deposited onto near-gamma TiAl substrates at 300'C, while preserving their initial chemical composition and retaining its original mutual Al:Ti ratio. No oxidation of the materials during deposition was detected and the porosity of the produced coatings varied between 5.9-27.3%. Heat-treatment in argon atmosphere under various combinations of temperatures and dwell times was carried out in order to induce formation of intermetallic phases within the deposits and compact the layers. Following the treatment, the specimens were subjected to 950'C exposure for 100, 250 and 500hrs, respectively. It was found that the oxidation of the coatings-protected specimens was substantially reduced (an increase in oxide content 1.34 mg/cm2 after 500hrs vs. 1.21 mg/cm2

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

New Methods of Damage and Failure Analysis of Structural Parts 10-14. 9. 2012 Ostrava

ISBN

978-80-248-2802-2

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

443-450

Název nakladatele

VŠB Ostrava

Místo vydání

Neuveden

Místo konání akce

Ostrava

Datum konání akce

10. 9. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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