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 holmium and praseodymium in the following ratio of components, at.%: the holmium the 98.9 99,0,praseodymium 1,0 - 1,2 and

I. Allestimenti. This invention relates to the production of magnetic alloys based on rare-earth metals.

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

2. Boyar L. A., Elderly M. A. - FTT, 1972, T. 14, N 6, S. 1833-1835.

2. Baselines C. G., L. Boyarsky A., Muraviev C. M. - the book "Materials 21 all-Union conference on low temperature physics" - Kharkiv, Ukraine, ILTPE USSR Academy of Sciences, 1980, so 2, S. 60-62.

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

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

5. Patent 1-42338, Japan, class C 22 C 1/04 published 09.12.89.

However, all known alloys have insufficient magnetic induction.

Technical sadcase, containing Ho, additionally introduced Pr respectively from 1.0 to 1.2 at.%.

III. To confirm the achievement of the technical objectives, the following examples:

For the manufacture of single crystal alloys method was used for recrystallization annealing of deformed crystals, which 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 60owith exact reference angle (10').

The location of the diffraction spots on the image determined by the location of the reflecting planes of the crystal against the TCI Wolfe was defined crystallographic directions.

Estimate of the distribution component of the single crystals was carried out using a "Cameca". To find the concentration distribution of the components was determined by the content of Ho - Pr and Pr 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. Ho98,8Pr1,2its magnetic induction equal to I = 38,4 kg;

1. Ho99,0Pr1,0its magnetic induction equal to I = 36,5 kg;

1. Ho99,5Pr0,5its magnetic induction equal to I = 34,7 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.

Magnetic alloy containing Ho, characterized in that it additionally contains a Pr in the following ratio of components, at.%:


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