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Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems

The oxidation of titanium and titanium aluminides has attracted the attention of scientists for many years because of their high-temperature application. The most popular method to investigate oxidation behavior is the measurement of alloy mass changes during exposure to elevated-temperature under i...

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Autores principales: Mitoraj-Królikowska, Marzena, Drożdż, Ewa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911493/
https://www.ncbi.nlm.nih.gov/pubmed/35268871
http://dx.doi.org/10.3390/ma15051640
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author Mitoraj-Królikowska, Marzena
Drożdż, Ewa
author_facet Mitoraj-Królikowska, Marzena
Drożdż, Ewa
author_sort Mitoraj-Królikowska, Marzena
collection PubMed
description The oxidation of titanium and titanium aluminides has attracted the attention of scientists for many years because of their high-temperature application. The most popular method to investigate oxidation behavior is the measurement of alloy mass changes during exposure to elevated-temperature under isothermal or thermal cycling conditions. However, the thermogravimetric method is not enough to establish an oxidation mechanism. In this paper, the temperature-programmed oxidation (TPOx) and reduction (TPR) were applied for the Ti–Al and Ti–Al–Nb systems, which was a new experimental concept which revealed interesting phenomena. Although oxidation of titanium alloys is well-described in the literature, not many papers present at the same time reduction of oxidized alloys. The results presented in the paper concentrated on the first stages of oxidation, which are scarcely described in the literature, but are important to understand the oxidation mechanism. Comparison between powder and bulk samples with similar compositions revealed essential differences in the oxidation mechanism.
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spelling pubmed-89114932022-03-11 Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems Mitoraj-Królikowska, Marzena Drożdż, Ewa Materials (Basel) Article The oxidation of titanium and titanium aluminides has attracted the attention of scientists for many years because of their high-temperature application. The most popular method to investigate oxidation behavior is the measurement of alloy mass changes during exposure to elevated-temperature under isothermal or thermal cycling conditions. However, the thermogravimetric method is not enough to establish an oxidation mechanism. In this paper, the temperature-programmed oxidation (TPOx) and reduction (TPR) were applied for the Ti–Al and Ti–Al–Nb systems, which was a new experimental concept which revealed interesting phenomena. Although oxidation of titanium alloys is well-described in the literature, not many papers present at the same time reduction of oxidized alloys. The results presented in the paper concentrated on the first stages of oxidation, which are scarcely described in the literature, but are important to understand the oxidation mechanism. Comparison between powder and bulk samples with similar compositions revealed essential differences in the oxidation mechanism. MDPI 2022-02-22 /pmc/articles/PMC8911493/ /pubmed/35268871 http://dx.doi.org/10.3390/ma15051640 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mitoraj-Królikowska, Marzena
Drożdż, Ewa
Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title_full Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title_fullStr Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title_full_unstemmed Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title_short Some Aspects of Oxidation and Reduction Processes in Ti–Al and Ti–Al–Nb Systems
title_sort some aspects of oxidation and reduction processes in ti–al and ti–al–nb systems
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8911493/
https://www.ncbi.nlm.nih.gov/pubmed/35268871
http://dx.doi.org/10.3390/ma15051640
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