长期贮存航天电连接器尘土污染的研究

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Abstract The effect of dust contamination on the electrical contact reliability of the aerospace electrical connectors after long term storage is investigated. The contact resistance and the separating force between the contacts formed by a pin and a socket in the connectors are measured. The element compositions, distribution density and size of dust particles inside the connectors and on the contact surfaces are also detected by scanning electronic microscope and X-ray energy dispersive spectroscopy. It is found that the contact resistance increases with the storage time, which is related to both the reduction of separating force and dust contamination. The dust particles can not only possibly enter the connector shells during the manufacture, assembly and storage periods, but also deposit on the contacts during the electroplating process. In the long-term stored environment, the dust contaminants combine the stress relaxation of spring materials of contacts and atmospheric corrosion to degrade the electrical contact performance of the connectors.

Key words： Long-term storage dust contamination connector electrical contacts

Received: 09 June 2013 Published: 05 August 2014

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V442

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	Articles by authors
	Zhou Yilin
	Wang Peng
	Ge Shichao
	Li Fang

Cite this article:

Zhou Yilin,Wang Peng,Ge Shichao等. Investigation on Dust Contamination of Aerospace Electrical Connector after Long-Term Storage[J]. Transactions of China Electrotechnical Society, 2014, 29(7): 269-276.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I7/269

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