An Effect of Co–W Barrier Sublayer on the Functional Characteristics of Au–Ru Contact Coatings
The performance characteristics (microhardness, porosity, roughness, and transient resistance) of Au–Ru coatings with and without the Co–W alloy barrier sublayer electrodeposited on the surface of contact blades of commercially produced reed switches were investigated. It was found that the barrier...
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| Veröffentlicht in: | Coatings (Basel) 2022-02, Vol.12 (2), p.161 |
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| creator | Gololobov, Gennady P. Suvorov, Dmitriy V. Karabanov, Sergey M. Slivkin, Evgeniy V. Tolstoguzov, Alexander |
| description | The performance characteristics (microhardness, porosity, roughness, and transient resistance) of Au–Ru coatings with and without the Co–W alloy barrier sublayer electrodeposited on the surface of contact blades of commercially produced reed switches were investigated. It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. The service time of reed switches with the barrier sublayer increased in both testing modes: in low-power (50 mV, 5 μA, 50 Hz) by more than 4 × 106 switching cycles, and in mean-power (12 V, 0.25 A, 50 Hz) by more than 1.8 × 106 switching cycles. |
| doi_str_mv | 10.3390/coatings12020161 |
| format | Article |
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It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. The service time of reed switches with the barrier sublayer increased in both testing modes: in low-power (50 mV, 5 μA, 50 Hz) by more than 4 × 106 switching cycles, and in mean-power (12 V, 0.25 A, 50 Hz) by more than 1.8 × 106 switching cycles.</description><identifier>ISSN: 2079-6412</identifier><identifier>EISSN: 2079-6412</identifier><identifier>DOI: 10.3390/coatings12020161</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Alloys ; Coated electrodes ; Coatings ; Cobalt base alloys ; Corrosion ; Electrodes ; Electrolytes ; Gold ; Metals ; Microhardness ; Morphology ; Plating ; Porosity ; Roughness ; Ruthenium ; Scanning electron microscopy ; Switches ; Switching</subject><ispartof>Coatings (Basel), 2022-02, Vol.12 (2), p.161</ispartof><rights>2022 by the authors. Licensee MDPI, Basel, Switzerland. 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It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. 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It was found that the barrier sublayer reduces the average roughness of the coatings without significant change in their porosity. The Au–Ru coatings without sublayer exhibited a greater variation in the transient resistance during an increase in the pressing force. The service time of reed switches with the barrier sublayer increased in both testing modes: in low-power (50 mV, 5 μA, 50 Hz) by more than 4 × 106 switching cycles, and in mean-power (12 V, 0.25 A, 50 Hz) by more than 1.8 × 106 switching cycles.</abstract><cop>Basel</cop><pub>MDPI AG</pub><doi>10.3390/coatings12020161</doi><orcidid>https://orcid.org/0000-0001-8642-2674</orcidid><orcidid>https://orcid.org/0000-0001-9906-8934</orcidid><oa>free_for_read</oa></addata></record> |
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| source | MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection |
| subjects | Alloys Coated electrodes Coatings Cobalt base alloys Corrosion Electrodes Electrolytes Gold Metals Microhardness Morphology Plating Porosity Roughness Ruthenium Scanning electron microscopy Switches Switching |
| title | An Effect of Co–W Barrier Sublayer on the Functional Characteristics of Au–Ru Contact Coatings |
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