DEVELOPMENT OF ULTRA REFRACTORY MATERIALS. Progress Report No. 21, February 1, 1960-April 30, 1960

Technical Report · Mon May 16 04:00:00 EDT 1960

OSTI ID:4049054

Shaffer, P T.B.

Additional basic information was obtained on refractory systems from which materials suitable for use in air at temperatures in excess of 3500 deg F for periods up to one hour may be developed. Aspects of the study included: strength as a function of temperature, structure, and fabrication; applications as a coating material; attempts to improve the high temperature strength; and a study of the causes of wide variation in oxidation in different lots of material. Results show that bodies consisting of zirconium diboride containing 10 mole% molybdenum disilicide have excellent oxidation and thermal shock resistance. Hightemperature strengths were lower than desired, though. Designs are shown for high temperature modulus of rupture apparatus, an induction heated inert atmosphere dilatometer, and apparatus for measuring elastic modulus by sonic techniques. (P.C.H.)

• Research Organization: Carborundum Co. Research and Development Div., Niagara Falls, N.Y.
• NSA Number: NSA-15-023924
• OSTI ID: 4049054
• Report Number(s): AD-237461
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AIR
COATING
CONFIGURATION
ELASTICITY
EXPANSION
FABRICATION
FAILURES
HIGH TEMPERATURE
INDUCTION
INERT GASES
LABORATORY EQUIPMENT
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM COMPOUNDS
OXIDATION
PLANNING
REFRACTORIES
SILICIDES
SOUND
STABILITY
TEMPERATURE
TENSILE PROPERTIES
THERMAL STRESSES
USES
VARIATIONS
ZIRCONIUM BORIDES