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Investigation of the magnetic properties of strip made from iron powder

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

Strip with a porosity of 25%, when sintered at a temperature of 1200°C in hydrogen with a dewpoint of −30°C, is refined with respect to carbon and oxygen. At the lower sintering temperatures of 1000 and 1100°C, the carbon content is reduced to 0.03–0.02%; the quantity of not easily reducible oxides remains unaltered.

With regard to the kinetics of grain growth, nonporous strip made from iron powder may be classed with steels which are coarse-grained by their prehistory.

Porosity substantially affects the value of coercivity. Each 2% of pores increases the coercivity approximately by 0.1 oersted.

If temperatures of 1200°C and above, with holding times of 2–3 hr are used for presintering, and temperatures of 900–1000°C for the final heat treatment of the nonporous strip, the magnetic properties of the strip can satisfy the requirements of GOST 3836-47 for low-carbon, electrical engineering thin sheet steel.

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Authors and Affiliations

  1. Institute of Metal Ceramics and Special Alloys, Academy of Sciences, Ukr.SSR

    O. A. Katrus, I. M. Fedorchenko & G. A. Vinogradov

Authors
  1. O. A. Katrus
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  2. I. M. Fedorchenko
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  3. G. A. Vinogradov
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Katrus, O.A., Fedorchenko, I.M. & Vinogradov, G.A. Investigation of the magnetic properties of strip made from iron powder. Powder Metall Met Ceram 1, 25–30 (1962). https://doi.org/10.1007/BF01135027

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  • DOI: https://doi.org/10.1007/BF01135027

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