The invention discloses a
magnetic field heat treatment method for improving
high frequency magnetic property of
iron based nanocrystal. The
magnetic field heat treatment method for improving the highfrequency magnetic property of the
iron based nanocrystal comprises the following steps that a belt material is rolled into a ring shape
magnetic core, heat treatment is conducted in two
system devices respectively, firstly the
magnetic core is placed in a heat treatment
tube furnace,
crystallization annealing is conducted, and alpha-Fe (Si)
nanocrystal phase is separated out; then the
magnetic core after
crystallization is placed in a high-intensity
magnetic field heat treatment furnace, crossed magnetic field heat treatment is conducted,
magnetic anisotropy of the magnetic core is generatedin the magnetic field applying direction, and thus magnetic property of the magnetic core in
high frequency is improved; a precision magnetic element analyzer is used for measuring the single-turn
inductance value of the treated magnetic core, and effective magnetic
conductivity is conversed through formulas; then loss of the magnetic core in the
high frequency is measured using a soft magnetic
alternating current testing device; and finally, the phase structure of a magnetic
core sample is analyzed using an X-
ray analyzer, and a detecting result is acquired and is compared with an existing magnetic core. The magnetic field heat treatment method for improving the high frequency magnetic property of the
iron based nanocrystal further has the advantages that the logic is clear, the operation is simple, and implement is easy to conduct.