Conclusions
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1.
It has been established that the optimum conditions for the comminution of titanium carbide and zirconium diboride powders in the planetary mill are: 50 vol.% of balls, at a ball diameter of 10–11 mm, 30 vol.% of powder, and 10–20 vol.% of acetone (relative to the barrel volume) and also 10–15% of oleic acid relative to the charge volume.
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2.
A study was made of the effects of comminution time upon the specific surface and contamination with iron of powders. It is shown that planetary milling under the optimum conditions yields powders with a particle size of less than 1μ and a specific surface attaining 42.9–46.3 m2/cm3.
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Literature cited
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A. G. Dobrovol'skii, Yu. I. Nikitin, et al., Poroshkovaya Met., No. 6, 1 (1967).
B. D. Durevich, L. B. Nezhevenko, et al., in: Refractory Carbides [in Russian], Naukova Dumka, Kiev (1970), p. 40.
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Yu. S. Darievich and V. S. Pugin, Poroshkovaya Met., No. 12, 4 (1971).
V. A. Perov and V. Yu. Brand, Comminution of Ores [in Russian], Metallurgizdat, Moscow (1950).
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A 1% C–1.5% Cr ball-bearing steel-Translator.
Translated from Poroshkovaya Metallurgiya, No. 6 (126), pp. 11–15, June, 1973.
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Matsera, V.E., Pugin, V.S., Dobrovol'skii, A.G. et al. Comminution of powders in the planetary centrifugal mill. Powder Metall Met Ceram 12, 447–450 (1973). https://doi.org/10.1007/BF00797078
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DOI: https://doi.org/10.1007/BF00797078