Inventors:
Brian K. Kyle - Dana Point CA, US
Timothy R. Mrock - Pembroke NH, US
International Classification:
H01B 1/22
H01B 3/20
US Classification:
252514, 252570, 252572, 252579
Abstract:
The electrical contact enhancing coating is a composition that includes finely divided precious metal particles mixed with a dielectric carrier to form a coating. The dielectric carrier is a vegetable oil (preferably soybean-based) carrier of the type used as a dielectric coolant in power transformers, and is preferably high in antioxidant content. In a first embodiment, the precious metal is 100% silver having an average particle size of about 5-10 μm. In a second embodiment, the precious metal is about 65-85% silver and 15-35% gold (average particle size 0. 5-1. 8 μm), by weight. In a third embodiment, the precious metal is about 65-85% silver, 12. 5-30% gold, and 2. 5-5% palladium (average particle size 0. 5-1. 8 μm), by weight. The precious metals may be cryogenically treated prior to mixing with the dielectric carrier.