SEDL / STP / STP646-EB / STP27324S

Atmospheric Corrosion of Laminar Composites Consisting of Copper on Stainless Steel

Baboian, R
Manager and engineer, Texas Instruments Inc., Attleboro, Mass

Haynes, G
Manager and engineer, Texas Instruments Inc., Attleboro, Mass

Sexton, P
Engineer, Allied Chemical Corp., Morristown, NJ

Pages: 19    Published: Jan 1978

Download this paper for $25 PDF (372K)          View License Agreement
Abstract

Atmospheric corrosion of laminar composites consisting of copper on stainless steels has been studied through direct exposure of copper-clad ferritic and austenitic stainless steels to provide information on galvanic effects at cut edges and pores in the copper cladding. Qualitative and quantitative results after exposure for 7.5 years are presented and environmental effects are considered. Application of electrochemical techniques for predicting galvanically induced localized corrosion are discussed and related to environmental conditions and alloy composition. Mechanisms for galvanic pitting and crevice corrosion are correlated with service performance of the copper-stainless steel couples.