| 摘要 |
An electrical contact comprises a barrier layer 12, e.g. of titanium or zirconium, disposed on a conductive substrate 11 e.g. of phosphor bronze. The barrier layer 12 is protected by a conductive capping layer 13 of a nitride, silicide or carbide of a transition metal, e.g. titanium or zirconium nitride. The arrangement provides a high degree of wear resistance and reliability at a significantly lower cost than a conventional gold contact. A surface coating 14 of gold or gold alloy may be included. The layers are deposited by sputtering. <IMAGE> |
