Accession Number:

ADA196217

Title:

Sulfide Corrosion of Silver Contacts during Satellite Storage

Descriptive Note:

Technical rept.

Corporate Author:

AEROSPACE CORP EL SEGUNDO CA CHEMISTRY AND PHYSICS LAB

Personal Author(s):

Report Date:

1988-03-25

Pagination or Media Count:

12.0

Abstract:

Delays in satellite launchings may require satellites to be stored on the ground for up to 6 years, and, in some instances, electrical scratchy noise on pure silver electrical connectors may develop in as little as 6 months. This problem has been attributed to the growth of silver sulfide, Ag2S, a semiconductor, on the silver contact surfaces. We offer suggestions that could improve storage specifications for satellites where Ag2S might be reduced to a level thickness where it does not pose a problem. This review of Ag2S growth might also be applicable to other satellite components where silver Ag is present, e.g., mirrors. Keywords Corrosion Films Electric contacts.

Subject Categories:

  • Electrical and Electronic Equipment
  • Properties of Metals and Alloys
  • Unmanned Spacecraft

Distribution Statement:

APPROVED FOR PUBLIC RELEASE