By Dennis R. Floyd, John N. Lowe
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Additional info for Beryllium Science and Technology: Volume 2
Hodge, Fabrication of Complex Beryllium Shapes by Gas-Pressure Compaction, in: Conference Imernationale sur Ia Metallurgie du Be1yllium, pp. 579-590, Presses Universitaires de France, Paris (1%5). 20. A. R. Austen and N. P. Pinto, Density Distribution within Isopressed Powder Parts, to be published. 21. N. P. Pinto and A. J. Martin, High Purity Beryllium Powder Components, Powder Meta /I: 17(13), 70-84 (1974). 22. D. Beasley and R. E. Cooper, The Effects of Porosity on the Mechanical and Physical Properties of Beryllium, in: Be1yllium 1977, pp.
_, _,. / ""' - LOOsEPOWDER-- / / ~ 0IL "' z ~ "'::E 50 ~o~~--~--~--~4~00~~--~--~--~8~0~0--~--~--~-,~2~0~0~ TEMPERATURE, °C Fig. 7. Densification of beryllium at elevated temperatures, including sintering and hot pressing of several stat1ing forms [after Pinto eta/. u6 ']. CP, cold press; CIP, cold isopress; HP, hot press; HIP, direct hot isopress; S, sinter; PS plasma spray. oo-ta> The most important results< 14 •15> identified the role of certain elements and the mechanism by which the sintering rate is accelerated.
1 61 41 122 42 R. W. Krenzer Denny and Santschi<2o> have summarized experiences with EBM of ·beryllium. They conclude that because of the necessity for multiple melting, slow melting rates, and expensive equipment, EBM is less attractive compared to other techniques. Also, vaporization losses are substantially higher than other melting methods. 2. Centrifugal Casting Centrifugal casting has been successfully applied to beryllium. Several different shapes have been cast at Rocky Flats,
Beryllium Science and Technology: Volume 2 by Dennis R. Floyd, John N. Lowe