INTERMEDIATE-TEMPERATURE OXIDATION OF BERYLLIDES. Monthly Letter Report No. 11, July 1, 1962-August 1, 1962

Technical Report · Wed Aug 01 04:00:00 EDT 1962

OSTI ID:4783307

Perkins, F C

Activities in an investigation of the oxidation kinetics and characteristics of ZrBe/sub 13/, Zr/sub 2/Be/sub 17/, NbBe/sub 12/, and Nb/sub 2 / Be/sub 17/ at 1200 to 1800 deg F are reported. Results of thermogravimetric experiments with NbBe/sub 12/ and Nb/sub 2/Be/sub 17/ in water-saturated Ar are described. The oxidation observed in these experiments was minor, and it was found that Nb/sub 2/Be/sub 17/ specimens did not crack during cooling. Oxidation characteristics of Nb/sub 2/Be/sub 17/ are discussed. Experimental evidence indicates that a close connection does not exist between precipitate formation and disintegration in these beryllides, and observations suggest that intergranular precipitation is not responsible for disintegration at oxidation temperatures. It is believed that the disintegration phenomena can be explalned on the basis of the stresses induced by oxide formation. (J.R.D.)

• Research Organization: Denver. Univ. Denver Research Inst.
• NSA Number: NSA-16-030724
• OSTI ID: 4783307
• Report Number(s): TID-16479
• Country of Publication: United States
• Language: English

Related Subjects

ARGON
BERYLLIUM ALLOYS
GRAIN BOUNDARIES
HIGH TEMPERATURE
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM ALLOYS
OXIDATION
OXIDES
PRECIPITATION
REACTION KINETICS
STRESSES
WATER
ZIRCONIUM ALLOYS