Magnetic alloy

 

(57) Abstract:

The invention relates to the field of magnetic materials, namely, magnetic alloys based on rare-earth metals. The obtained magnetic alloy with high magnetic induction, containing terbium and samarium in the following ratio of components, at.%: the terbium 99,0-99,5; samarium 0.5 to 1.0.

The technical field. This invention relates to the production of magnetic alloys based on rare-earth metals.

The prior art. Currently known on the basis of Tb alloys: Tb-Ho, Tb-Fe-Co, Fe-B-Tb.

Boyar L. A., Semenov F. M., Romanenko A. I. - FTT, 1974, T. 16, N 10, S. 3112 - 3114.

2. Boyar L. A. - the book "Alloys of rare earth metals with special physical properties", Publishing house "Nauka", M., 1983, S. 42 - 45.

3. Patent 4769063, USA, MCI C 22 C 1/04 published 06.09.88.

4. Patent 1-42338, Japan, MKI C 22 C 1/04 published 09.12.89.

However, all known alloys have insufficient magnetic induction.

The technical purpose of this invention to provide an alloy with high magnetic induction. This task is solved in that the alloy containing Tb, additionally introduced Sm with emery.

For the manufacture of single crystals was used the method of recrystallization annealing of deformed crystals, for which we used the seed, oriented along the direction of <0001> relative to the growth axis at an angle of 12o. The grown single crystals represented ingots with a diameter of 50 mm and a thickness of 6-8 mm, which contained 4 - 5 large blocks.

Lauerma - polychromatic x-ray snapshot of a stationary crystal. To obtain radiographs used the camera RXO. The sample on the camera strengthens on the goniometric head. A narrow beam of x-rays were cut collimator. A diffraction pattern was recorded on film, and located perpendicular to the selected collimator primary x-ray beam.

The goniometric head is allowed to rotate the crystal by arcs head 60 with the exact reference angle (10').

The location of the diffraction spots on the image determined by the location of the reflecting planes of the crystal with respect to the primary beam and x-ray film.

With increasing projection and grid Wolfe, defined crystallographic directions.

tarirovannogo distribution components determined the content of the Tb - Sm and Sm 3-4 points along the length and width of the crystal.

The maximum deviation from the average concentration was 0.1 at.% for each sample.

Thus, the grown crystals had a fairly uniform distribution of the component volume.

Thus, the composition of the alloy:

1. Tb99,0Sm1,0its magnetic induction equal to l = 39,7 kg;

2. Tb99,5Sm0,5its magnetic induction equal to l = 35,9 kg;

The invention relates to the production of magnetic materials, with record values of the magnetic induction. That opens the possibility to use these alloys in vacuum, electronic, nuclear, aeronautical engineering, computer engineering, metallurgy and many other industries and the national economy.

Currently, the closest analogues are:

1. Boyar L. A. - the book "Alloys of rare earth metals with special physical properties", Publishing house "Nauka", M., 1983.

2. Patent 4769063, USA, MCI C 22 C 1/04 published 06.09.88.

3. Patent 1-42338, Japan, MKI C 22 C 1/04 published 09.12.89.

Magnetic alloy containing Tb, characterized in that it further is

 

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