Title

Thermal Properties Of Refractory Materials

Date

1962

Index Abstract

Contrails and DTIC condensed

Photo Quality

Incomplete

Report Number

WADD TR 60-581 Part II

Creator

Cape, J. A.

Taylor, R. E.

Corporate Author

Atomics International, Canoga Park, Calif.

Laboratory

Directotare of Materials and Processes

Extent

28

Identifier

AD0264228

AD0264228

Access Rights

OTS

Distribution Classification

1

Contract

AF 33(616)-6794

DoD Project

4776

DoD Task

None Given

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Report Availability

Full text available

Date Issued

1962-06

Abstract

Refinements in the transient thermal property apparatus are described. With these modifications, the apparatus has been used to determine the thermal diffusivity of tungsten boride from about 1300°C to 1600°C. The measured values increase from about 0.054 to 0.058 over this temperature interval. The techniques and apparatus for measuring the specific heat of brittle conductors by pulse heating are also described. Resistivity and specific heat data for uranium silicide of several compositions are reported. The resistivity and specific heat increased with increasing silicon content. For uranium silicide containing 3.8% silicon, the resistivity increased from 56 micro-ohm-cm at 0°C to 75 micro-ohm-cm at 750°C, and for uranium silicide containing 5.9% silicon, the resistivity increased from 81 micro-ohm-cm at 0°C to 111 micro-ohm-cm at 800°C. The specific heat for the 3.8% silicon material is given by Cp = 3.16 x 10-6T + 0.0412 cal/gm-°C from 50° to 430°C, and for the 5.8% silicon material, Cp = 16.1 x 10-6T + 0.0455 cal/gm- °C from 50° to 715°C, where T is in °C.The thermal conductivity of titanium carbide was measured over the temperature region 400° to 1200°C. the steady-state radial heat flow method was used. The conductivity varies linearly from 0.088 ca/sec-cm-°C at 500°C to 0.109 cal/sec-cm-°C at 1100°C. These results are in marked contrast to values reported in the literature.

Provenance

IIT

Type

report

Subject

High Temperature

Refractory Materials

Borides

Brittleness

Carbides

Ceramic Materials

Electrical Conductivity

Heat Transfer

Induction Heating

Materials

Measurement

Optical Instruments

Pyrometers

Rocket Nozzles

Silicides

Test Equipment

Thermal Conductivity

Thermodynamics

Titanium Compounds

Tungsten Compounds

Uranium Compounds

Vacuum Furnaces

Zirconium Compounds

Publisher

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

Distribution Conflict

No

Format

1 online resource