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Abstract

A survey has been carried out of the literature on hot-pressing theories and models. Theories as to the mechanism governing the process may be divided into two principal groups:

(1) Mathematical representation of densification. Equations have been derived for mechanisms controlled by plastic or viscous flow. Also equations of a purely empirical nature have been advanced. In this group there is a trend towards a hyperbolic hot-pressing equation, which, according to tests, is valid for metals and metallic compounds over wide temperature ranges.

(2) Theories asserting that the densification process is controlled by various processes, e.g. particle gliding, fragmentation, plastic flow, and volume diffusion. No complete mathematical formula has been proposed on this basis to describe the entire hot-pressing process.

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References

U.S. Patent No. 101,863.

German Patent No. 289,864 (1912).

U.S. Patent No. 1,343,976 (1917).

Hoyt

S. L.

, Trans. Amer. Inst. Min. Met. Eng., 1930, 89, 9.

Trzebiatowski

, Z. physikal. Chem., 1934, [A], 169, 91.

Athy

L. F.

, Bull. Amer. Assoc. Petrol. Geol., 1930, 14, 1.

Frenkel

, J. Physics U.S.S.R., 1945, 9, 385.

Shaler

A. J.

and Wulff

, Indust. and Eng. Chem., 1948, 40, 838.

Shaler

A. J.

, Trans. Amer. Inst. _Min. Met. Eng., 1949, 185, 796.

10.

Nabarro

F. R. N.

, “The Strength of Solids”, p. 75. 1948: London (Physical Society).

11.

Herring

, J. Appl. Physics, 1950, 21, 437.

12.

Mackenzie

J. K.

and Shuttleworth

, Proc. Phys. Soc., 1949, [B], 62, 833.

13.

Frohlich

and Sack

, Proc. Boy. Soc., 1946, rm, 185, 415.

14.

Murray

, Rodgers

E. P.

, and Williams

A. E.

, Trans. Brit. Ceram. Soc., 1954, 53, 474.

15.

Mangsen

G. E.

, Lambertson

W. A.

, and Best

, J. Amer. Ceram. Soc., 1960, 43, 55.

16.

Vasilos

, ibid., 1960, 43, 517.

17.

Jaeger

R. E.

and Egerton

, ibid., 1962, 45, 209.

18.

Lersmacher

and Scholz

, Arch. Eisenhilttenwesen, 1961, 32, 421.

19.

McClelland

J. D.

, “Powder Metallurgy”, p. 157. 1960 : New York and London (Academic Press).

20.

KoyaPchenko

M. S.

and Samsonoy

G. V.

, Poroshkovaya Metallurgiya, 1961, 1, (2), 3.

21.

Scholz

, “Special Ceramics 1962” (edited by P. Popper), p. 293. 1963: New York and London (Academic Press).

22.

Westermann

F. E.

and Carlson

R. G.

, Trans. Met. Soc. A. I. M.E., 1961, 221, 649.

23.

Carlson

R. G.

and Westermann

F. E.

, Planseeber. Pulvermet., 1962, 10, 15.

24.

Felten

E. J.

, J. Amer. Ceram. Soc., 1961, 44, 381.

25.

Chang

and Rhodes

C. G.

, ibid., 1962, 45, 379.

26.

Coble

R. L.

and Ellis

J. S.

, ibid., 1963, 46, 438.

27.

Vasilos

and Spriggs

R. M.

, ibid., 1963, 46, 493.

28.

Burke

J. E.

and Turnbull

, Progress in Metal Physics, 1952, 3, 220.

29.

Lersmacher

, Roeder

, and Scholz

, Naturwiss., 1962, 49, 35.

30.

Scholz

and Lersmacher

, Arch. Eisenhattenwesen, 1964, 41, 98.

31.

Scholz

, Planseeber. Pulvermet., 1963, 11, 82.

32.

McClelland

J. D.

, and Whitney

D. L.

, ibid., 1962, 10, 131.

33.

Coble

R. L.

, J. Appl. Physics, 1961, 32, 793.

34.

Kuczynski

G. C.

, Trans. Amer. Inst. Min. Met. Eng., 1949, 185, 169.

35.

Kingery

W. D.

and Berg

, J. Appl. Physics, 1955, 26, 1205.

36.

Lindner

and Parfitt

G. D.

, J. Chem. Physics, 1957, 26, 182.

37.

Oishi

and Kingery

W. D.

, ibid., 1960, 33, 905.

THEORIES OF HOT PRESSING *

Abstract

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References