Title

Research And Development On Advanced Graphite Materials. Volume XIII - Development Of A Fine-Grain Isotropic Graphite For Structural And Substrate Applications

Date

1964

Index Abstract

Contrails and DTIC

Photo Quality

Incomplete

Report Number

WADD TR 61-72 Volume XIII

Creator

Howard, R. A.

Piper, E. L.

Corporate Author

Advanced Materials Laboratory, National Carbon Company

Laboratory

AF Materials Laboratory

Extent

36

NTRL Accession Number

AD601753

Identifier

AD0601753

AD0601753

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

1964-05

Abstract

The report describes the development, fabrication, and physical properties of grade RVC graphite (formerly designated as experimental grade RT-0029). Grade RVC has been manufactured in sizes up to 18 inches in diameter by 15 inches in length and is nominally characterized by a bulk density of 1.81 g/cc, an admittance to N2 of 2x10-2 and 6x10-3cm2/sec. w. g. and a. g. respectively, and a room temperature flexural strength w.g. and a.g. of 2560 and 1930 lbs/in2 respectively. RVC is an excellent substrate material for silicon carbide coatings because its thermal expansion between 400 and 1000°C is approximately 0.3 per cent in both grain directions. This expansion is in the same range as that for silicon carbide. Results are also presented on high temperature oxidation of silicon carbide coated grade RVC specimens. The unusually good oxidation protection afforded the graphite by the coating demonstrates the marked superiority of this substrate over other graphite materials which do not match the silicon carbide in thermal expansion.

Publisher

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

Distribution Conflict

No

Provenance

Bearcat

IIT

Type

report

Subject

Refractory Materials

Graphite

Production

Structural Properties

Mechanical Properties

Thermal Expansion

Thermal Properties

Silicon Coatings

Ceramic Coatings

Carbides

Antioxidants

Heat Treatment

Structural Components

Isotropism

Carbon

Fracture (Mechanics)

Asphalt

Processing

Silicon Compounds

Format

1 online resource