Conclusions
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1.
There has been demonstrated the possibility of slip casting billets for a mixture of powders (70 wt.% ZrC + 30 wt.%W) with different specific weights.
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2.
There has been selected an optimum composition of slips containing a mixture of zirconium carbide and tungsten powders, obtained by the common grinding of the powders in a vibromill, and a 14% content of a 2% solution of carboxymethyl cellulose.
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3.
It has been shown that drying and sintering of the castings must be done with slow elimination of the moisture, with a preliminary sintering and a final sintering at 2200°C. Rapid drying or rapid heating with burning off of the plasticizer leads to cracking of the castings.
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4.
Articles obtained by the method of slip casting, sinter with a large but uniform shrinkage. The density of the sintered articles is 7.5 g/cm3.
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Literature cited
A. G. Dobrovol'skii and É. Ya. Popichenko, Poroshkovaya Met, No. 9, 45 (1965).
A. G. Dobrovol'skii, G. G. Dobrovolskii, T. A. Lyudvinskaya, and É. Ya. Popichenko, Neorganicheskie Materialy, No. 6 (1966).
A. G. Dobrovol'skii, Slip Casting [in Russian], “Metallurgiya,” Moscow (1967).
N. A. Figurovskii, Sedimentation Analysis [in Russian], Akad. Nauk SSSR, Moscow-Leningrad (1948).
N. I. Nikitin, Chemistry of Pulps and Celluloses [in Russian], Akad. Nauk SSSR, Moscow-Leningrad (1951).
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Translated from Poroshkovaya Metallurgiya, No. 2 (74), pp. 94–99, February, 1969.