Accession Number : AD0651211

Title :   STUDY OF SOLUTION DEOXYGENATION AND SPECIMEN PRETREATMENT TECHNIQUES FOR USE IN THE HYDROGEN PERMEATION APPARATUS,

Corporate Author : NAVAL AIR ENGINEERING CENTER PHILADELPHIA PA AERONAUTICAL MATERIALS LAB

Personal Author(s) : Gionnoscoli,Joan G.

Report Date : 14 MAR 1967

Pagination or Media Count : 10

Abstract : An electrochemical technique that was previously developed by Devanathan and Stachurski (Proc. Royal Sec. vA270 p90 1962) for measuring the permeation rate of hydrogen through a palladium coated membrane of iron or steel shows promise as a method for determining the hydrogen embrittling characteristics of paint strippers. A program was therefore initiated to determine the reproducibility of the method, the first phases of which are reported. It was found that oxygen could be rapidly and effectively removed from the alkaline solution by treatment with helium and sodium sulfite. Pretreatment of the test specimen surfaces proved to be of value in increasing permeation currents and, in additon, improved the reproducibility of the method.

Descriptors :   (*PAINT REMOVERS, HYDROGEN EMBRITTLEMENT), (*HYDROGEN EMBRITTLEMENT, TEST METHODS), (*MEMBRANES, PERMEABILITY), ELECTROCHEMISTRY, ELECTROLYTES, SOLUTIONS(MIXTURES), METAL FILMS, PALLADIUM, OXYGEN, REMOVAL, SURFACES, PREPARATION, HELIUM, IRON, STEEL

Subject Categories : Physical Chemistry
      Metallurgy and Metallography
      Solvents, Cleaners, and Abrasives
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE