Accession Number : AD0446525

Title :   HYDROGEN EMBRITTLEMENT RESULTING FROM CORROSION, CATHODIC PROTECTION, AND ELECTROPLATING.

Descriptive Note : Quarterly rept. no. 3,

Corporate Author : PENNSYLVANIA UNIV PHILADELPHIA ELECTROCHEMISTRY LAB

Personal Author(s) : Nanis, L. ; McBreen, J. ; Bockris, John O M.

Report Date : 01 AUG 1964

Pagination or Media Count : 8

Abstract : The permeation rate of hydrogen through Armco iron membranes has been studied as a function of potential in various ambient electrolytes. In each case, the membranes were Armco iron, 0.77 mm thick. The cathodic solutions were prepared from standard analytical reagents using ttriply distilled water. The sodium hydroxide solutions were preelectrolyzed for 48 hours to remove any residual impurities. The cathodic current was measured by a Simpson micro-ammeter. The potential of the cathode was measured with respect to a saturated calomel electrode using a Kintel micro-volt-ammeter. The permeation rate of hydrogen through Armco iron membranes was studied as a function of temperature in the range 10 C to 75 C at a cathodic current density of 10 mA/ sq cm. Constant temperature (to within + or 0.5 C) was maintained using an air thermostat. (Author)

Descriptors :   *HYDROGEN EMBRITTLEMENT, *HYDROGEN, *CORROSION, *CATHODIC PROTECTION, *ELECTROPLATING, METALS, PERMEABILITY, MEMBRANES, ELECTRIC CURRENT, VOLTAGE, ELECTROCHEMISTRY, CATHODES(ELECTROLYTIC CELL), ELECTROLYTES, SOLUTIONS(MIXTURES), AROMATIC COMPOUNDS, POLYCYCLIC COMPOUNDS, IRON, STEEL, SODIUM COMPOUNDS, HYDROXIDES, POTASSIUM COMPOUNDS, CYANIDES, IODIDES, SULFURIC ACID.

Distribution Statement : APPROVED FOR PUBLIC RELEASE