THE EFFECT OF HEAT TREATMENT ON THE THERMAL EXPANSION OF PYROLYTIC GRAPHITE

reportActive / Technical Report | Accession Number: AD0801623 | Open PDF

Abstract:

Thermal expansion was studied by x-ray techniques for three graphites a commercially available pyrolytic graphite, PG the same PG annealed at 3410 C for 1 hr and AGKSP, a spectrographic grade graphite. The coefficients of thermal expansion along the C-axis alpha c for the three materials are respectively 26.5 x 10 to the -6 power 20-2400 C 27.9 x 10 to the -6 power 20-3000 C and 30.1 x 10 to the -6 power 20-2700 C. The value of alpha c is found to increase with a decrease in the fraction of disordered layers p in the graphite. Discussion of this effect is extended to include the results of other studies.

Author(s):
Elliott, Ewart S. ; Richardson, James H.
Author Organization(s):
AEROSPACE CORP EL SEGUNDO CA LAB OPERATIONS
Descriptive Note:
Rept. for Feb-Apr 1965
Pagination:
0020

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-669(6250-10)-9, SSD-TR-66-168
Contract/Grant Number(s):
AF 04(695)-669
Monitor Series:
TR-66-168, SSD
 Subject Terms
Joint Capability Areas:
JCA_8_Building Partnerships; JCA_8.2_Shape; JCA_3_Force Application; JCA_8.1_Communicate; JCA_3.2_Engagement; JCA_5_Command and Control; JCA_1.2.5_Lessons Learned; JCA_3.2.1_Kinetic Means
Communities of Interest:
Space
Descriptor(s):
*PYROLYTIC GRAPHITE, *THERMAL EXPANSION, ARGON, CARBON, CRYSTAL LATTICES, DECOMPOSITION, GONIOMETERS, HEAT TREATMENT, INSTRUMENTATION, MEASUREMENT, PARTICLE SIZE, REFLECTION, SPECTRUM ANALYZERS, TEMPERATURE, X RAYS
Field(s)/Group(s):
Ceramics, Refractories and Glass, Thermodynamics
Report Date:
1966 Aug 01