Influence of Cold-Sprayed Al/Ti Deposition on High-temperature Oxidation and Mechanical Properties Deterioration of Ti-Al-Nb Intermetallic 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

Influence of Cold-Sprayed Al/Ti Deposition on High-temperature Oxidation and Mechanical Properties Deterioration of Ti-Al-Nb Intermetallic Substrates

Popis výsledku v původním jazyce

In the study, four powder blends of Al (oval, 14?77 um) doped with various Ti (angular, 11?50 um) content were prepared as feedstock material for cold spray deposition: Al, Al5Ti, Al15Ti, Al30Ti. Protective layers of the blends designated for deliberateoxidation were then deposited onto Ti-46Al-8Nb intermetallic substrates at 300'C, while preserving their initial chemical composition and retaining their original Al:Ti ratio. No oxidation of the materials during deposition was detected. A two-stage heat-treatment in an inert argon atmosphere (480'C/2hrs + 520'C/3hrs) was then carried out in order to induce desirable diffusion-driven processes to aid the anti-oxidizing performance indicators for the subsequent high temperature testing. Following the treatment, the specimens were subjected to 950'C air exposure for 100, 250 and 500hrs, respectively. It was found that the oxidation of the specimens was substantially reduced for the low-Ti content coatings (an increase in oxide content of

Název v anglickém jazyce

Influence of Cold-Sprayed Al/Ti Deposition on High-temperature Oxidation and Mechanical Properties Deterioration of Ti-Al-Nb Intermetallic Substrates

Popis výsledku anglicky

In the study, four powder blends of Al (oval, 14?77 um) doped with various Ti (angular, 11?50 um) content were prepared as feedstock material for cold spray deposition: Al, Al5Ti, Al15Ti, Al30Ti. Protective layers of the blends designated for deliberateoxidation were then deposited onto Ti-46Al-8Nb intermetallic substrates at 300'C, while preserving their initial chemical composition and retaining their original Al:Ti ratio. No oxidation of the materials during deposition was detected. A two-stage heat-treatment in an inert argon atmosphere (480'C/2hrs + 520'C/3hrs) was then carried out in order to induce desirable diffusion-driven processes to aid the anti-oxidizing performance indicators for the subsequent high temperature testing. Following the treatment, the specimens were subjected to 950'C air exposure for 100, 250 and 500hrs, respectively. It was found that the oxidation of the specimens was substantially reduced for the low-Ti content coatings (an increase in oxide content of

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název statě ve sborníku

International Thermal Spray Conference 2014 Proceedings

ISBN

978-3-87155-574-9

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

903-907

Název nakladatele

DVS Media GmbH

Místo vydání

Barcelona, Španělsko

Místo konání akce

Barcelona

Datum konání akce

21. 5. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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