| Autor: |
James R. Lloyd, Prabjit Singh, George W. Hutt, James J. Demarest, Larry Fischer, William L. Brodsky, Gary Allen Thompson, Larry Palmer |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
International Symposium for Testing and Failure Analysis. |
| ISSN: |
0890-1740 |
| DOI: |
10.31399/asm.cp.istfa2005p0027 |
| Popis: |
Contrary to known art, we have discovered that lubricated tin-silver connectors have better electrical performance and are more reliable than lubricated silver-silver connectors under high-current and high-vibration conditions. The antifretting lubricant, that enhances the performance and reliability of the tin-silver connectors, is a grease consisting of a hydrocarbon oil in a nano-sized silica-particle base. Focused ion beam and scanning electron microscopy were used to understand the contact degradation mechanism. The superior electrical performance and reliability of the lubricated tin-silver connectors is due to a mechanism that replaces the tin plating from the contact surface with a coating of silver. The removal of the tin plating may be due to wear and the replacement by the silver coating may be due to an electrochemical displacement reaction. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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