Title

The Thermal Properties Of Thirteen Solid Materials To 5000°F For Their Destruction Temperatures

Date

1962

Index Abstract

Contrails and DTIC condensed

Photo Quality

Incomplete

Report Number

WADD TR 60-924

Creator

Neel, David S.

Pears, C. D.

Oglesby, Sabert, Jr.

Corporate Author

Southern Research Institute

Laboratory

Directorate of Materials and Processes

Extent

217

Identifier

AD0275536

AD0275536

Access Rights

OTS

Distribution Classification

1

Contract

AF 33(616)-6312

DoD Project

7360

DoD Task

73603

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Report Availability

Full text available

Full text available

Date Issued

1962-02

Abstract

The heat capacity, thermal expansion, and thermal conductivity were measured for thirteen different refractory materials, including ATJ graphite, tungsten, four nitrides, two borides, a silicate, and four carbides. The temperature range was from 500°F to 5000°F. The heat capacity was found to vary considerably with temperature and demonstrated marked inflections at specific temperature ranges. The thermal expansion parallel with the press direction was in the range of 3 x 10-6 in./in./° F and to vary significantly with the prior thermal history of the specimen. At temperatures within about 1000°F of the melting or deterioration range, the motions of the materials generally increased considerably. The thermal conductivity perpendicular to the press direction was found to be generally of the same value for materials of the same family, viz., the nitrides or carbides. The prior thermal history had a marked influence on the resulting values. Considerable information was obtained on the performance of 5000°F furnaces with graphite heaters, high temperature thermocouples, optical pyrometry, and the behavior of specimen materials in these 5000°F environments. All materials except a few failed at considerably below the handbook values for their melting or deterioration temperatures.

Publisher

Wright-Patterson Air Force Base, OH : Directorate of Materials and Processes, Aeronautical Systems Division, Air Force Systems Command

Distribution Conflict

No

Provenance

IIT

Type

report

Subject

Physical Properties

Refractory Materials

Enthalpy

High Temperature

Graphite

Pyrolysis

Aluminum Compounds

Borides

Carbides

Ceramic Materials

Degradation

Hafnium Compounds

Hafnium Compounds

Heat Transfer

Iron

Laboratory Furnaces

Melting

Metals

Nickel

Niobium Compounds

Nitrides

Oxides

Sapphire

Silicates

Silicon Compounds

Tantalum Compounds

Thermal Conductivity

Thermal Expansion

Format

1 online resource