| Auteur | Rechercher : Legoux, J. G.1; Rechercher : Dallaire, S.1 |
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| Affiliation | - Conseil national de recherches Canada. Institut des matériaux industriels du CNRC
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| Format | Texte, Article |
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| Conférence | Proceedings NTSC '93, Surface and Coating Technology |
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| Résumé | Electrotribological applications require materials with both high electrical conductivity and wear resistance. For this purpose, it was proposed to develop a copper-based plasma-sprayed coating containing titanium diboride particles. The process for fabricating this Cu-TiB ₂ coating consists of plasma-spraying reactive powders which contain a Cu-Ti alloy and boron. The reaction between the copper alloy and boron proceeds in different steps going from solid-state diffusion of Ti and Cu to the synthesis of TiB ₂in a liquid below 1083 ° C. Plasma-sprayed copper coatings contain finer TiB ₂ crystals than Cu-TiB ₂ materials synthesized in a furnace at 1200 °C. Coatings with vol. 25% TiB₂ have a hardness which is comparable to Cu-Co-Be and Cu-Ni-Be alloys and to Cu-W and Cu-Mo alloys used in spot welding. Their low electrical resistivity of 52 μΩcm could be increased by lowering the oxygen content within coatings and controlling the formation of TiB₂ clusters, the titanium content in solution in copper remaining low after the synthesis reaction. |
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| Date de publication | 1992 |
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| Maison d’édition | National Research Council Canada |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | CNRC 34366
NRC-IMI92TC-20300-1349-G |
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| Numéro NPARC | 23004685 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 8648dd57-1983-4abc-9c36-ef84648b7c3e |
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| Enregistrement créé | 2018-12-10 |
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| Enregistrement modifié | 2025-12-05 |
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