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- Title
Switching Properties of the Contact Coatings Based on Refractory Metals Alloys.
- Authors
Gololobov, Gennady P.; Suvorov, Dmitriy V.; Tyschenko, Mikhail S.; Slivkin, Evgeniy V.; Tolstoguzov, Alexander
- Abstract
Switching the properties of the Ag contact groups of an electromagnetic relay with the electrodeposited Ni-W and Co-W alloy coatings was studied. It is shown that these coatings are able to stabilize the spread of contact resistance within the entire test interval and to increase the service life of Ag contact groups from 2.3 × 106 to 4.5 × 106 commutation cycles. According to our research, the service life of coated contact groups is mainly determined by a change in the surface morphology caused by the electrical erosive transfer of the contact materials and to a lesser extent by the formation of poorly conductive adsorbed hydrocarbon films.
- Subjects
HEAT resistant alloys; REFRACTORY coating; ALLOYS; SERVICE life; SURFACE morphology; TUNGSTEN alloys
- Publication
Coatings (2079-6412), 2023, Vol 13, Issue 2, p241
- ISSN
2079-6412
- Publication type
Article
- DOI
10.3390/coatings13020241