INVESTIGATION OF SINTERABLE POWDERS AND BERYLLIUM OXIDE PROPERTIES. Sixth Quarterly Report

Technical Report · Thu Nov 17 04:00:00 EST 1960

OSTI ID:4111361

Hyde, C; Duckworth, W H

Little or no effect of sintering atmosphere was observed in the densification of compacts of MgO powders at 800 and 11OO deg F. Moisture in the sintering atmosphere impeded densification. A 1100 deg F calcine sintered to a density of 97.2 per cent theoretical at 2200%F in dried O or N; in normal air a sintering temperature of 2400 deg F was required to achieve this density. When the basic carbonate was overcalcined at 2400 deg F, Cl in the atmosphere promoted densification of the MgO powders, as did the use of a vacuum atmosphere at sintering temperatures above 2200 deg F. Soaking compacts of the 2400 deg F calcine for 50 hr produced greater densification than did a 1-hr soak, especially at higher sintering temperatures. (For preceding period see NP-8984.) (C.J.G.)

• Research Organization: Battelle Memorial Inst., Columbus, Ohio
• NSA Number: NSA-15-005344
• OSTI ID: 4111361
• Report Number(s): NP-9495
• Country of Publication: United States
• Language: English

Related Subjects

AIR
CARBONATES
CHLORINE
DENSITY
ENVIRONMENT
HUMIDITY
IMPREGNATION
MAGNESIUM OXIDES
METALS, CERAMICS, AND OTHER MATERIALS
NITROGEN
OXYGEN
POWDERS
PYROLYSIS
SINTERED MATERIALS
SINTERING
TEMPERATURE
VACUUM