Conclusions
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1.
The strength of TiC and ZrC specimens of various porosities was studied in the temperature range 300–3000°K.
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2.
The strength was found to exhibit a peak at 0.6–0.7 Tmelt, whose appearance is attributed to the transition of the materials investigated to the tough-brittle state.
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3.
The effect of specimen preparation technique on the mechanical properties of TiC and ZrC was established. It was found that, at any given porosity, the strength of slip-cast specimens is 30% higher than that of compacted specimens. It is therefore recommended that the technique of slip casting of refractory compounds should be used more widely in powder metallurgy.
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Literature cited
S. S. Ordan'yan and A. I. Avgustinik, Abstracts of Papers Presented to a Scientific-Technical Conference of Young Scientists [in Russian], Goskhimizdat (1962).
V. T. Troshchenko, Poroshkovaya Met., No. 3 (1963).
V. K. Kharchenko and L. I. Struk, Poroshkovaya Met.,2, No. 8, 7 (1962).
A. Kelly and D. I. Rowcliffe, J. Am. Ceram. Soc.,50, No. 5, 31 (1967).
W. Williams, J. Appl. Phys.,35, 1329 (1964).
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Translated from Poroshkovaya Metallurgiya, No. 8(92), pp. 63–67, August, 1970.
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Ordan'yan, S.S., Drozdetskaya, G.V. High-temperature strength of TiC and ZrC specimens prepared by different techniques. Powder Metall Met Ceram 9, 665–668 (1970). https://doi.org/10.1007/BF00803812
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DOI: https://doi.org/10.1007/BF00803812