THE SINTERING CHARACTERISTICS OF BeO
The effects of various parameters on the sintering characteristics of beryllium oxide are described. The presence of water vapor in the sintering atmosphere is found to retard the densification of beryllium oxide compacts. The sinterability can be improved if the compacts are predried at 900 deg C in air and sintered in a dry atmosphere. The effect of water vapor on the sintering rate is largely eliminated if 0.25 mole per cent MgO is added to the BeO compact. Beryllium oxide powder calcined at 1250 deg C instead of 900 deg C has a slower sintering rate but appears to be capable of achieving similar ultimate densities at longer sintering times or higher temperatures. The presence of 0.25 mole per cent of AlO/sub 1.5/, CrO/sub 1.5/, MgO, and NiO, increases the ultimate density of BeO compacts relative to compacts without additive. MgO and AlO/sub 1.5/re particularly>i effective at increasing the density. (auth)
- Research Organization:
- General Electric Research Lab., Schenectady, N.Y.
- NSA Number:
- NSA-15-023891
- OSTI ID:
- 4049079
- Report Number(s):
- DC-59-3-127
- Journal Information:
- J. Nuclear Materials, Journal Name: J. Nuclear Materials Vol. Vol: 3
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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