Accession Number : AD0733903

Title :   Corrosion of Electronic Components by Fumes from Plastics.

Descriptive Note : Research and development technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Krumbein,S. J. ; Raffalovich,A. J.

Report Date : SEP 1971

Pagination or Media Count : 24

Abstract : Stressed, clean beryllium copper wires were subjected to fumes of selected plastics and fluxes under both humid and dry environments. Macro-visual and microscopic examinations, as well as resistance value changes, were noted. PVC, and one-component RTV silicone rubber, were found to be extremely corrosive. Acetal, nylon, polyurethane foam, and teflon were found to be non-corrosive. A series of one-component RTV silivones were evaluated to determine their true curing time by measuring the complete cessation of gaseous evolution under normal laboratory conditions. Teflon emitted volatile material during exposure to high humidity at 70 C. The vapors were deposited on various surfaces where they polymerized into visible white plastic films of fluorocarbon polymer. (Author, modified-PL)

Descriptors :   (*COPPER ALLOYS, *CORROSION), (*PLASTICS, CORROSIVE GASES), (*ELECTRONIC EQUIPMENT, RELIABILITY(ELECTRONICS)), BERYLLIUM ALLOYS, VAPORS, SILICONE PLASTICS, POLYVINYL CHLORIDE, SOLDERING FLUXES, WIRE

Subject Categories : Electrical and Electronic Equipment
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE