The influence of some process variables on the extent and number of WC/WC contacts in sintered compacts of a WC–25 wt-%Co alloy has been determined using optical and electron microscopy. Prolonged milling of the powder, solid-state presintering heat treatment, and liquid-phase sintering all decrease the extent of the WC/WC boundaries in the final product, whereas an increased compacting pressure promotes their formation.
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References
1.
ChermantJ. L., COSTERM., DESCHANVRESA., and LOSTA.: 4th European Symp. on ‘Powder Metallurgy’, II, 1975, 6.
2.
BengtssonB., JOHANNESSONT., and LLNDAUL.: Planseeber. Pulvermetall., 1974, 22, 285.
3.
BernardR.: Proc. Plansee Seminar, part2, 1956, p.41.
4.
PerssonG.: Nature, 1968, 218, 159.
5.
FrenchD. N.: Internat. J. Powder Metall., 1969, 5 (3), 47.
6.
NortonJ. T.: Ref. 3, p.48.
7.
ExnerH E. and FISCHMEISTERH.: Arch. Eisenhiittenwes, 1966, 37 (5), 417.
8.
FroschauerL. and FULRATHR. M.: J. Mater. Sci., 1976, 11 (1), 142.
9.
ReesG. J. and YOUNGB.: Powder Metall., 1971, 14 (27), 185.
10.
ExnerH. E. and GURLANDJ.: ibid., 1970, 13 (25), 13.
11.
GurlandJ.: Trans. Metall. Soc. AIME, 1958, 212, 452.
12.
ExnerH. E. and FISCHMEISTERH.: Prakt. Metallogr., 1966, 3, 19.
13.
LardnerE.: Powder Metall., 1970, 13 (26), 394.
14.
LardnerE.: ibid., 1978, 21, 65.
15.
JaffreyD., LEEJ. W., and BROWNEJ. D.: Powder Metall., 1980, in press.
16.
LardnerE.: Powder Metall., 1973, 16 (31), 107.
17.
BasuA. K. and SALEF. R.: J. Mater. Sc!, 1977, 12, 1115.
18.
ExnerH. E.: Powder Metall., 1970, 13 (26), 429.
19.
HinnÜBerJ., RÜDIGERO., and KINNAW.: ibid., 1961, 8, 1.
20.
MeredithB. and MILNERD. R.: ibid., 1976, 19, 38.
21.
BengtssonB., JOHANNESSONT., and LINDAUL.: ibid., 1973, 16 (32), 220.
22.
BengtssonB., JOHANNESSONT., and LINDAUL.: Planseeber. Pulvermetall., 1973, 21, 187.
23.
SnowballR. F. and MILNERD. R.: Powder Metall., 1968, 11 (21), 23.
EasterlingK. E. and THÖLÉNA. R.: Acta Metall., 1972, 20, 1001.
27.
KlarE. and SHAFERW.: Metall. Trans., 1976, 7A, 1470.
28.
WhalenT. J. and HUMENIKM.Jr: Proc. int. Conf., ‘Sintering and related phenomena’, (ed. G. C. Kuczynski, N. A. Hooten, and C. F. Gibbon), 715-742; 1967, New York, Gordon and Breach.
29.
NelsonR. J. and MILNERD. R.: Powder Metall., 1972, 15 (30), 346.
