Conclusions
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1.
The hardnesses of copper cermet specimens obtained by four pressings at 3.5 tons/cm2 and sintering at low temperatures are greater than the corresponding values for compact deformed and annealed copper and are of the order of 56 kg/mm2.
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2.
The tensile strength increases with the number of cycles at the same temperature. The maximum value (20.5 kg/mm2) is observed with an increase in the sintering temperature to 900°C.
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3.
The density is a maximum and the resistivity a minimum in the case of specimens sintered at 900° C. These properties are obtained after four sinterings. The density reaches 8.84 g/cm3 and the resistivity 0.0167 Ω · mm2/ m.
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Literature cited
K. V. Savitskii, Poroshkovaya Met., No. 4 (1964).
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Translated from Poroshkovaya Metallurgiya, No. 2 (74), pp. 34–39, February, 1969.
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Namitokov, K.K., Bundur, E.P. & Yudin, B.A. Effect of repeated pressing and sintering on the properties of copper cermet specimens. Powder Metall Met Ceram 8, 113–116 (1969). https://doi.org/10.1007/BF00774815
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DOI: https://doi.org/10.1007/BF00774815