Accession Number : AD0664775

Title :   RELATION OF MECHANICAL PROPERTIES TO THE STRUCTURE OF IONIC SOLIDS.

Descriptive Note : Quarterly rept. no. 6, 1 Sep-30 Nov 67,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s) : Vedam,K. ; Newnham,R. E.

Report Date : 15 DEC 1967

Pagination or Media Count : 20

Abstract : Detailed analysis of the Berg-Barrett pattern of muscovite mica along with results obtained with Lang technique, condensation of water droplets on freshly cleaved surfaces and rocking curve studies in x-ray diffraction, indicate that the layer structure of muscovite is not truly planar, but appears to be corrugated somewhat similar to the layers in antigorite. Localized interference fringes of Newtonian type were observed with x-rays, in muscovite mica samples. Final details concerning twinning, stacking disorder and chemical homogeneity of fluorophlogopite were worked out. (Author)

Descriptors :   (*MICA, MECHANICAL PROPERTIES), (*SILICATES, *CRYSTAL STRUCTURE), CRYSTAL LATTICES, X RAY DIFFRACTION, DISLOCATIONS, TWINNING(CRYSTALLOGRAPHY), CERAMIC MATERIALS, SIMULATION

Subject Categories : Ceramics, Refractories and Glass
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE