Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing

Due to their excellent mechanical properties, Co-based alloys are one of the main candidates to replace Ni-based alloys in high temperature application. Knowledge about oxidation resistance of Co-based alloy MAR M-509 and the extent of its aluminizing on its oxidation resistance is limited. Therefor...

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Autores principales:	Wojciech J. Nowak, Bernadeta Hader, Kamil Ochał, Bartek Wierzba
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	high temperature oxidation MAR M-509 aluminide layer breakaway oxidation oxidation mechanism Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/23e4cb1c502d413b8fdb7d85daec1e38
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spelling	oai:doaj.org-article:23e4cb1c502d413b8fdb7d85daec1e382021-11-25T17:15:48ZIncrease in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing10.3390/coatings111113062079-6412https://doaj.org/article/23e4cb1c502d413b8fdb7d85daec1e382021-10-01T00:00:00Zhttps://www.mdpi.com/2079-6412/11/11/1306https://doaj.org/toc/2079-6412Due to their excellent mechanical properties, Co-based alloys are one of the main candidates to replace Ni-based alloys in high temperature application. Knowledge about oxidation resistance of Co-based alloy MAR M-509 and the extent of its aluminizing on its oxidation resistance is limited. Therefore, in the present study, an aluminide layer was manufactured by low activity chemical vapor deposition (LA-CVD) on MAR M-509. Aluminized and uncoated alloys were investigated in terms of oxidation kinetics and oxidation resistance during isothermal and cyclic oxidation at 1000 and 1100 °C. Material in the as-cast and after exposure was analyzed using scanning electron microscopy (SEM), thermogravimetry (TG) and glow-discharge optical emission spectrometry (GD-OES). Obtained results allowed for elucidating of degradation mechanism including nitridation process of carbides for MAR M-509. It was found that aluminizing of MAR M-509 significantly decreases its oxidation kinetics by the factor of 2.5 and 1.5 at 1000 and 1100 °C respectively. Moreover, the suppression of identified degradation mechanism in case of aluminized alloy was found until occurrence of breakaway oxidation of the aluminide layer. It was also proposed that further increase in oxidation resistance can be successively achieved by an increase in aluminide layer thickness.Wojciech J. NowakBernadeta HaderKamil OchałBartek WierzbaMDPI AGarticlehigh temperature oxidationMAR M-509aluminide layerbreakaway oxidationoxidation mechanismEngineering (General). Civil engineering (General)TA1-2040ENCoatings, Vol 11, Iss 1306, p 1306 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	high temperature oxidation MAR M-509 aluminide layer breakaway oxidation oxidation mechanism Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	high temperature oxidation MAR M-509 aluminide layer breakaway oxidation oxidation mechanism Engineering (General). Civil engineering (General) TA1-2040 Wojciech J. Nowak Bernadeta Hader Kamil Ochał Bartek Wierzba Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
description	Due to their excellent mechanical properties, Co-based alloys are one of the main candidates to replace Ni-based alloys in high temperature application. Knowledge about oxidation resistance of Co-based alloy MAR M-509 and the extent of its aluminizing on its oxidation resistance is limited. Therefore, in the present study, an aluminide layer was manufactured by low activity chemical vapor deposition (LA-CVD) on MAR M-509. Aluminized and uncoated alloys were investigated in terms of oxidation kinetics and oxidation resistance during isothermal and cyclic oxidation at 1000 and 1100 °C. Material in the as-cast and after exposure was analyzed using scanning electron microscopy (SEM), thermogravimetry (TG) and glow-discharge optical emission spectrometry (GD-OES). Obtained results allowed for elucidating of degradation mechanism including nitridation process of carbides for MAR M-509. It was found that aluminizing of MAR M-509 significantly decreases its oxidation kinetics by the factor of 2.5 and 1.5 at 1000 and 1100 °C respectively. Moreover, the suppression of identified degradation mechanism in case of aluminized alloy was found until occurrence of breakaway oxidation of the aluminide layer. It was also proposed that further increase in oxidation resistance can be successively achieved by an increase in aluminide layer thickness.
format	article
author	Wojciech J. Nowak Bernadeta Hader Kamil Ochał Bartek Wierzba
author_facet	Wojciech J. Nowak Bernadeta Hader Kamil Ochał Bartek Wierzba
author_sort	Wojciech J. Nowak
title	Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
title_short	Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
title_full	Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
title_fullStr	Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
title_full_unstemmed	Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing
title_sort	increase in oxidation resistance of mar m-509 via la-cvd aluminizing
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/23e4cb1c502d413b8fdb7d85daec1e38
work_keys_str_mv	AT wojciechjnowak increaseinoxidationresistanceofmarm509vialacvdaluminizing AT bernadetahader increaseinoxidationresistanceofmarm509vialacvdaluminizing AT kamilochał increaseinoxidationresistanceofmarm509vialacvdaluminizing AT bartekwierzba increaseinoxidationresistanceofmarm509vialacvdaluminizing
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Increase in Oxidation Resistance of MAR M-509 via LA-CVD Aluminizing

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