Accession Number : AD0747476

Title :   Carbon: A New Hexagonal Crystal Form,

Corporate Author : AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS

Personal Author(s) : Whittaker,A. Greenville ; Wolten,Gerard M.

Report Date : 30 JUN 1972

Pagination or Media Count : 18

Abstract : A new polymorphic form of carbon, similar to but distinct from chaoite, has been discovered. It is trigonal, with a(o) = 5.33 A and c(o) = 12.24 A. It is produced along with chaoite on the surfaces of graphitic carbons under free vaporization conditions at low pressures, with temperatures above approximately 2550K. (Author)

Descriptors :   (*CARBON, *CRYSTAL STRUCTURE), ELECTRON MICROSCOPY, ELECTRON DIFFRACTION

Subject Categories : Ceramics, Refractories and Glass
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE