Abstract

It is shown that the phase composition of commercial ferromagnetic KS37 alloy depends on the conditions of its grinding in hydrogen and subsequent heat treatment in vacuum. Treatment parameters (hydrogen saturation pressure and grinding of the alloy, mill rotation frequency, grinding time, vacuum treatment temperature) that allow a wide variation in the phase composition of the alloy and in the quantitative ratio of the phases have been established. Depending on the above-mentioned conditions, several phase compositions involving SmCo5, Sm2Co17, Sm2Co7, and Sm5Co19 can be obtained.

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