Title

Research And Development On Advanced Graphite Materials. Volume XXIV - The Thermal Expansion Of Graphite In The Co-Direction

Date

1963

Index Abstract

Contrails and DTIC

Photo Quality

Incomplete

Report Number

WADD TR 61-72 Volume 24

Corporate Author

Research Laboratory of National Carbon Company Division of Union Carbide Corporation

Laboratory

AF Materials Laboratory

Extent

20

Identifier

AD0427185

AD0427185

Access Rights

OTS

Distribution Classification

1

Contract

AF 33(616)-6915

DoD Project

7350

DoD Task

735002

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Report Availability

Full text available

Date Issued

1963-11

Abstract

The thermal expansions of lampblack base, coke base, hot worked coke base and pyrolytic graphites have been measured in the co direction from 1000° to 2700°K by use of a high temperature X-ray camera. The results indicate that, (a) the coefficient of thermal expansion is not constant with temperature and (b) this coefficient increases with increasing crystallite perfection. The camera was modified to accept a low temperature attachment and the ao's and co's of lampblack base, hot worked coke base, and pyrolytic graphite were evaluated at 6°, 78° and 298°K. The three graphites showed similar expansion characteristics and, within the limits of error, seemed to show a negative ao expansion coefficient near 298°K.

Publisher

Wright-Patterson Air Force Base, OH : AF Materials Laboratory, Research and Technology Division, Air Force Systems Command

Distribution Conflict

No

Provenance

IIT

Type

report

Subject

Graphite

High Temperature

Pyrolytic Cryogenics

Crystal Lattices

Thermal Expansion

X Ray Diffraction Cameras

X Ray Photography

Format

1 online resource

Creator

Lowell, C. E.