DTIC ADA214267: An XPS and Electrochemical Study pdf

DTIC ADA214267: An XPS and Electrochemical Study

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In previous surface studies of N bearing stainless steels exposed to acidic environments we have determined that N is anodically segregated as a surface nitride phase. In this paper we have focused on the nature of the surface nitride and its role in the passivity of each of the constituent elements comprising a Mo bearing stainless steel. To facilitate this study, surface nitrides were generated electrochemically at room temperature on the surface of high purity samples of Cr, Mo, Fe and Ni and on the surface of types 304, 317LX, 904L and A16X stainless steels. The effect of the surface nitriding treatment on the anodic kinetics of the stainless steels was in close agreement with the effect of N alloying. The surface nitriding of Cr resulted in the complete elimination of the active nose in deaerated 0.1 MHC1. Nitride; Molybdenum; Stainless steel. (jes

• Creator/s: Defense Technical Information Center
• Date: 10/24/1989
• Year: 1989
• Book Topics/Themes: DTIC Archive, Willenbruch, R D, STATE UNIV OF NEW YORK AT STONY BROOK DEPT OF MATERIALS SCIENCE AND ENGINEERING, *AUSTENITE, *NITRIDING, SURFACE FINISHING, STAINLESS STEEL, ELECTROCHEMISTRY, MOLYBDENUM, STEEL, NITRIDES, NITROGEN, ROOM TEMPERATURE, SURFACES, PURITY, SAMPLING, KINETICS, NOSES, ANODIC COATINGS, ACIDS, ENVIRONMENTS, HIGH RATE

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