Carbon: A New Hexagonal Crystal Form,

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Abstract:

A new polymorphic form of carbon, similar to but distinct from chaoite, has been discovered. It is trigonal, with ao 5.33 A and co 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

Author(s):
Whittaker, A. Greenville ; Wolten, Gerard M.
Author Organization(s):
AEROSPACE CORP EL SEGUNDO CALIF LAB OPERATIONS
Pagination:
0018

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-0172(2250-40)-8, SAMSO-TR-72-174
Contract/Grant Number(s):
F04701-71-C-0172
Monitor Series:
TR-72-174
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*CARBON, *CRYSTAL STRUCTURE), ELECTRON MICROSCOPY, ELECTRON DIFFRACTION
Field(s)/Group(s):
Ceramics, Refractories and Glass, Crystallography
Report Date:
1972 Jun 30