Accession Number : ADA294683

Title :   Atlas of Polarization Diagrams for Naval Materials in Seawater.

Descriptive Note : Final rept.,

Corporate Author : NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD

Personal Author(s) : Hack, Harvey P.

PDF Url : ADA294683

Report Date : APR 1995

Pagination or Media Count : 90

Abstract : Polarization curves were developed in seawater at low (quiescent) flow and at 2.4 m/s flow for nine structural alloys. Potentiostatically generated curves for up to 120 days are compared with potentiodynamically generated curves at four scan rates with freely corroding pre-exposures of 1 or 120 days. Smoothed curves successfully used in computer model predictions of cathodic protection current and potential distributions are also presented. These curves are compared with previously published data available for 800 days exposure and with cathodic protection current density design guidelines. Corrosion rate data as a function of potential after up to 120 days exposure are also presented.

Descriptors :   *CATHODIC PROTECTION, *SEA WATER CORROSION, SCANNING, COMPUTERIZED SIMULATION, POLARIZATION, STRUCTURAL PROPERTIES, RATES, CURRENT DENSITY, ALLOYS, MATHEMATICAL PREDICTION, SEA WATER, DIAGRAMS.

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE