Accession Number : AD0736697

Title :   The Influence of Applied Potential on the Microhardness of Zinc Monocrystal Electrodes: The Electrocapillary Effect.

Descriptive Note : Technical rept.,

Corporate Author : MARTIN MARIETTA CORP BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES

Personal Author(s) : Latanision,R. M. ; Opperhauser,H. , Jr. ; Westwood,A. R. C.

Report Date : JAN 1972

Pagination or Media Count : 18

Abstract : The microhardness of zinc monocrystal electrodes immersed in an aqueous electrolyte is shown to be sensitive to the applied potential provided that pyramidal slip about the hardness impression produces surface steps. Unlike some crystalline nonmetals and glasses in which environment-induced changes in the space charge layer are considered to be responsible for Rebinder effects, the above behavior in metals cannot be so ascribed. Indeed, it is suggested that variation in the energy required to form a surface slip step with electrode potential accounts satisfactorily for the present observations. (Author)

Descriptors :   (*METALS, HARDNESS), (*ZINC, *DISLOCATIONS), ELECTRIC DOUBLE LAYER, SURFACES, ELECTRODES, ELECTROCHEMISTRY, MECHANICAL PROPERTIES

Subject Categories : Metallurgy and Metallography
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE