固定触点的电不稳定性:Al/Al和Al/黄铜结

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts Pub Date : 1988-03-01 DOI:10.1109/HOLM.1988.16111

R. Timsit

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引用次数: 12

摘要

本文研究了在超高真空和氧气条件下Al/Al和Al/黄铜固结的电不稳定性。研究发现，如果表面足够清洁，铝/黄铜结在真空和氧气中都是电稳定的。金属间化合物在该界面中的生长只有在接触点暴露足够长的时间(通常是几个小时)后才会影响稳定性，通常高于150摄氏度。表面污染物可能以碳质材料的形式存在，对Al/Al和Al/黄铜结的性能有害。然而，连接处通常会从污染引起的退化中恢复。这种恢复部分归因于在退化的早期阶段污染物从电界面的热扩散。

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Electrical instabilities in stationary contacts: Al/Al and Al/brass junctions

Electrical instabilities in Al/Al and Al/brass stationary point junctions has been examined in ultrahigh vacuum and in oxygen gas. It is found that Al/brass junctions are electrically stable in vacuum and in oxygen gas if the surfaces are sufficiently clean. The growth of intermetallic compounds in this interface affects stability only after a sufficiently long exposure of the contact, typically several hours, to a temperature typically higher than 150 degrees C. Surface contaminants, probably in the form of carbonaceous material, are deleterious to the performance of Al/Al and Al/brass junctions. However, the junctions often recover from contaminant-induced degeneration. This recovery is attributed in part to thermal dispersal of the contaminants from the electrical interface during the early stages of degeneration.<>

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来源期刊

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts

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