Conclusions
A study was made of the effect of time of sintering at 1120–1170°C on the magnetic characteristics of SmCo5 magnets. It was established that the specific magnetization intensity and coercive force of these magnets change appreciably at the beginning of sintering (τs < 5 min), but subsequently vary but little with sintering time. The presence of a low-meltingpoint addition was found to have no effect on the densification rate of SmCo5 powder compacts. The sintering of SmCo5 magnets of optimum chemical composition occurs in the solid state irrespective of the method by which the SmCo5 powder has been enriched in samarium. It is proposed that a Sm2Co7 alloy powder be employed for this purpose. Structural equilibrium in particles, which is chiefly responsible for the magnetic characteristics of sintered SmCO5 specimens, becomes established in a short period of time thanks to a high value of coefficient of diffusion.
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Translated from Poroshkovaya Metallurgiya, No. 3(183), pp. 70–75, March, 1978.
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Kononenko, A.S., Sergeev, V.V. Effect of time of sintering on some properties of SmCo5 magnets. Powder Metall Met Ceram 17, 222–226 (1978). https://doi.org/10.1007/BF00791433
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DOI: https://doi.org/10.1007/BF00791433