TiO-based coatings prepared by plasma spraying in air of Ti + C mixtures
| Autor: | B. Haller, J.-P. Bonnet, J.-C. Labbe, A. Grimaud |
|---|---|
| Přispěvatelé: | Groupe d'Etudes des Matériaux Hétérogènes (GEMH), Université de Limoges (UNILIM)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM), Axe 2 : procédés de traitements de surface, Science des Procédés Céramiques et de Traitements de Surface (SPCTS), Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Ecole Nationale Supérieure de Céramique Industrielle (ENSCI)-Institut des Procédés Appliqués aux Matériaux (IPAM), Université de Limoges (UNILIM)-Université de Limoges (UNILIM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2006 |
| Předmět: |
Materials science
Hydrogen chemistry.chemical_element 02 engineering and technology engineering.material 01 natural sciences [SPI.MAT]Engineering Sciences [physics]/Materials Coating 0103 physical sciences General Materials Science Graphite Thermal spraying 010302 applied physics Mechanical Engineering Monoxide [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics chemistry Chemical engineering Mechanics of Materials engineering Cast iron 0210 nano-technology Carbon Titanium |
| Zdroj: | Journal of Materials Research Journal of Materials Research, Cambridge University Press (CUP), 2006, 21 (7), pp.1770-1774. ⟨10.1557/JMR.2006.0203⟩ |
| ISSN: | 2044-5326 0884-2914 |
| DOI: | 10.1557/jmr.2006.0203 |
| Popis: | This work presents an original way for preparing TiO-based coatings by thermal spraying. As titanium monoxide is oxidized by the mere trace of oxygen contained in hydrogen, it is obvious that plasma spraying of TiO powder does not lead easily to the formation of a titanium monoxide coating. However, thermodynamical calculations show that the conditions necessary for the preparation of TiO can be reached, at the titanium melting temperature (Tm=1933 K), when oxygen reacts with liquid metal in the presence of excess carbon. These results have led to experiments in which TiO-based coatings have been prepared by spraying a stoichiometric mixture of graphite and titanium grains onto cast iron in air. In optimal conditions, a gas-tight hard coating (1000 ± 15 HV3) of a TiO-based phase (composition: TiO0.81±0.06C0.04±0.02) has been obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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