Fine artificial graphite powders can be cold compacted to give bodies of high density (∼ 88% of theoretical), low permeability (B0 ∼10–14 cm2), and reasonable strength. Such powders, after vacuum annealing, will not compact.
Die-compacted powder has strongly anisotropic properties owing to a high degree of preferred orientation within the compact; this effect is less marked in hydrostatically compacted powder. Minor dimensional changes occur when compacts are annealed in the range 600-1000°C.
The preparation of fuels by incorporation of fissile and fertile materials into graphite powder and cold compacting is described.
Get full access to this article
View all access options for this article.
References
1.
WilsonS.. Private communication.
2.
FrechetteV. D., HayJ., and TaoY., “Proceedings of the First and Second Conferences on Carbon” (Univ. Buffalo, N.Y.), p. 189. 1956: Baltimore, Md. (Waverly Press).
3.
MrozowskiS., ibid.,p. 34.
4.
NelsonJ. B. and RileyD. P., Proc. Phys. Soc., 1945, 57, 477.
5.
“Reference material on Atomic Energy” Vol. 4. “Reactor Handbook : Materials ”, p. 139. 1955: Technical Information Service, U.S. Atomic Energy Commission.
6.
BaconG. E., Atomic Energy Research Estab. Rep., 1949, (G.R. 418).
7.
HutcheonJ. M., LongstaffB., and WarnerR. K., ibid., 1958, (CE/R.2335).
8.
BaconG. E., Aria Cryst., 1952, 5, 392.
9.
BaconG. E., ibid., 1950, 3, 320.
10.
GoodmanJ. F. and RoweG. W., ” Chemisorption ” (edited by W. E. Garner), p. 272. 1957: London (Butterworths Scientific Publications).
