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Atmospheric Corrosion Monitor

IP.com Disclosure Number: IPCOM000063236D
Original Publication Date: 1985-Mar-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Brusic, VA MacInnes, RD Scaman, ME [+details]

Abstract

An atmospheric corrosion monitor facilitates the continuous monitoring of corrosion rates in the environment or in a hermetically sealed device. The procedure consists of three elements: 1. A monitoring slide or wire element changes its electrical resistance as a function of its dissolution or oxidation. A suitable element is a thin evaporated film, deposited on a substrate comprising a dielectric, for example, a 1000 A copper film, 2 mm wide and 30 mm long. The element can be a wire or film with non-passivating corrosion properties, should be active in a broad range of environmental conditions and should corrode uniformly. The ends of the dumbbell-shaped monitor are large to permit a large contact area and to minimize ohmic contact influences. The monitoring area between the contact areas should be narrow, e.g.