Permeability responsive oscillator for detecting phase transform

Details Permeability responsive oscillator for detecting phase transform Permeability responsive oscillator for detecting phase transform

1976-09-13

1978-08-08

Corcoran, Robert J.

Electricity: measuring and testing

Magnetic

Curie point determination

324224, 324227, 324236, G01R 3312

Patent

active

041059719

ABSTRACT:
A device for detecting phase transformations in a magnet material is disclosed. A sample is placed in a coil coupled to a harmonic oscillator and subjected to heat radiation means for simulating predetermined heating and cooling rates which result in phase transformations within the material being tested. The phase transformations are a function of changes in magnetic permeability which vary with temperature changes.

REFERENCES:
patent: 3239826 (1966-03-01), Yetter
patent: 3377838 (1968-04-01), Kanazawa et al.
Perekos et al., An Automatic Unit for Determining the Curie Temperature of Ferromagnetic Material; Zavodskaya Lab. (USSR), vol. 41, No. 1, pp. 61-62; Jan. 1975.

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