High temperature isothermal and cyclic oxidation behaviour of pure recycled titanium
| Autor: | N.F. Garza-Montes-de-Oca, F. A. Pérez-González, Alfredo Artigas, Brenda López-Zárate, Alberto Monsalve, Omar Alejandro Valdés-Saucedo, J. H. Ramírez-Ramírez, Lorena L. Garza-Tovar, Liliana Judith Vázquez-Rodríguez, Nora A. Garcia-Gomez, Rafael Colás |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science General Chemical Engineering Oxide chemistry.chemical_element 02 engineering and technology Activation energy 021001 nanoscience & nanotechnology 01 natural sciences Isothermal process Metal chemistry.chemical_compound chemistry Chemical engineering Rutile visual_art Phase (matter) 0103 physical sciences visual_art.visual_art_medium General Materials Science Spallation 0210 nano-technology Titanium |
| Zdroj: | Anti-Corrosion Methods and Materials. 65:340-349 |
| ISSN: | 0003-5599 |
| DOI: | 10.1108/acmm-04-2017-1790 |
| Popis: | Purpose This paper aims to analyse the surface evolution of pure recycled titanium subjected to isothermal and cyclic oxidation conditions using dry air as oxidant gas. It is important to mention that the cyclic oxidation behaviour of pure titanium is a process that has been barely studied. Design/methodology/approach An isothermal and cyclic oxidation reactor was built for these purposes. This installation allows the oxidation of material under the action of any atmosphere and for temperatures up to 1,200°C. For this study, the oxidation behaviour of the material was studied at 850°C and 950°C. Findings Oxide growth under isothermal oxidation conditions in air follows a parabolic behaviour with an activation energy of 118 kJ/mol, and the oxide phase formed on the surface of the metal was rutile. The cyclic oxidation of the material indicates that oxide is spalled from the surface following linear behaviours; this phenomenon is controlled by the thermal stresses experienced by the samples during heating and cooling cycles. Originality/value The material is obtained from the production of electrolytic copper, and during its reprocessing practices at high temperature, it was thought that it could experience some abnormal oxidation. In addition, given that pure titanium is currently used for biomedical application, some surface degree can be given by means of oxidation and subsequent spallation process situation that is found during the cyclic oxidation experiments, which could be a low-cost method to engineer a surface for these purposes. |
| Databáze: | OpenAIRE |
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