Accession Number : AD0656897

Title :   CORROSION STUDIES OF HAYNES 25 ALLOY IN SEAWATER USING ELECTROCHEMICAL TECHNIQUES,

Corporate Author : NAVAL RADIOLOGICAL DEFENSE LAB SAN FRANCISCO CALIF

Personal Author(s) : Kubose,Donald A. ; Cordova,Herman I.

Report Date : 22 AUG 1967

Pagination or Media Count : 31

Abstract : Electrochemical corrosion rate measurements were made on uncoated, emissively coated and thermally shocked and uncoated specimens of Haynes 25 alloy in seawater at room temperature and 90C. The corrosion rates of the emissively coated specimens were about an order of magnitude higher than those of the uncoated specimens. No significant difference between the corrosion rates measured at room temperature and at 90C was observed for either the uncoated or the emissively coated specimens. Thermal shocking of uncoated specimens (by quenching from 500C to room temperature) did not increase their corrosion rates. The corrosion rates observed were on the order of 0.003 mils per year (mpy) for the uncoated and the thermally shocked uncoated specimens and 0.04 mpy for the emissively coated specimens. (Author)

Descriptors :   (*REACTOR MATERIALS, CORROSION), (*COBALT ALLOYS, CORROSION), (*CORROSION, *SEA WATER), CHROMIUM ALLOYS, TUNGSTEN ALLOYS, NICKEL ALLOYS, IRON ALLOYS, MANGANESE ALLOYS, ELECTROCHEMISTRY, OXIDATION REDUCTION REACTIONS, COATINGS, THERMAL SHOCK, REACTION KINETICS, ELECTRIC POWER PRODUCTION, NUCLEAR REACTORS, SPACEBORNE, ATMOSPHERE ENTRY, WATER ENTRY, HAZARDS

Subject Categories : Properties of Metals and Alloys
      Snap(systems For Nuclear Auxiliary Power) Tech
      Fission Reactor Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE