| Author | Search for: Legoux, J. G.1; Search for: Dallaire, S.1 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Conference | Proceedings NTSC '93, Surface and Coating Technology |
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| Abstract | 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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| Publication date | 1992 |
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| Publisher | National Research Council of Canada |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | CNRC 34366
NRC-IMI92TC-20300-1349-G |
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| NPARC number | 23004685 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 8648dd57-1983-4abc-9c36-ef84648b7c3e |
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| Record created | 2018-12-10 |
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| Record modified | 2023-01-05 |
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