Preparation method of Sm-Co-based amorphous nanocrystalline thin-strip magnet

Abstract

The invention relates to a preparation method of a Sm-Co-based amorphous nanocrystalline thin-strip magnet, and relates to a rare earth metal and magnetic transition metal containing magnet made of a hard magnetic material. The Sm-Co-based amorphous nanocrystalline thin-strip magnet has a chemical formula of SmxCoyFezZruBvQw, wherein the symbols of qualified elements metered by atomic percentage meet the following conditions: x + y + z + u + v + w = 100, x = 9.0-14.0, y = 45.0-70.5, z = 2.8-18.4 , u = 1.1-7.0, v = 3.8-19.0, w = 1.0-21.2, and Q is one to four elements of Nb, Al, Si, Cu and C. The Sm-Co-based amorphous nanocrystalline thin-strip magnet prepared by a centrifugal fast quenching and strip throwing technology has the advantages of high room temperature intrinsic coercivity, high resistance to corrosion and high strength.

Description

technical field

[0001] The technical scheme of the invention relates to a magnet of hard magnetic material containing rare earth metal and magnetic transition metal, in particular to a preparation method of a Sm-Co based amorphous nanocrystalline thin strip magnet. Background technique

[0002] Amorphous state refers to a state in which atoms in the internal structure of a substance are arranged in a long-range disorder. In 1960, Klement et al. (Klement W., Willens R.H., Duwez P. Non-crystalline structure in solidified gold-silicon alloys [J]. Nature, 1960, 187: 869-870) successfully applied the rapid quenching technology to Au for the first time. - Cooling of the Si alloy, an alloy with an amorphous structure is obtained, also known as a metallic glass. Due to the long-range atomic disordered structure of metallic glasses, which have the properties of solid and liquid, metal and glass, they exhibit many unique properties, such as excellent magnetic properties, high corrosi...

Images