Rear earth-contained high-permeability Ni-Fe soft magnetic alloy, preparation method and purposes thereof

Abstract

The invention belongs to the field of metallic functional materials, and particularly relates to a rear earth-contained high-permeability Ni-Fe soft magnetic alloy, a preparation method and purposes thereof. The alloy as weight percentage comprises the following components: 40-83 percent nickel (Ni), 0.38-0.56 percent manganese (Mn), 0.24-4.0 percent silicon (Si), 3.0-5.7 percent molybdenum (Mo), 2.0-8.2 percent copper (Cu), 0.02-15 percent rare earth element Re in lanthanide series, carbon less than 0.015 percent, phosphorus less than 0.015 percent and sulfur less than 0.015 percent, as well as iron and inevitable impurities, which occupy the less percentage, wherein the Re is at least one of the elements among lanthanum (La), cerium (Ce), seodymium (Pr), neodymium (Nd), promethium (Pm), Samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm),Ytterbium (Yb), lutetium (Lu), Scandium (Sc) and yttrium (Y) which are the rare earth elements in the lanthanide series. According to the invention, the suitable rare earth elements are added and the components of the alloy are reasonably adjusted, the Ni-Fe alloy has good alloying effect and improves the original microscopic structure, thereby having improved integrated magnetic property and mechanical property.

Description

technical field [0001] The invention belongs to the field of metal functional materials and relates to a nickel-iron alloy, in particular to a nickel-iron soft magnetic alloy containing rare earth elements. Background technique [0002] Soft magnetic alloys belong to the category of precision alloys and are widely used in energy, transportation, environmental protection and other fields. Due to their low coercive force and high magnetic permeability properties, they are often used to make magnetic conductors, magnetic shields, rotors and stators of motors, and transformers And the iron core of the relay and the magnetic components in various communication, sensing, recording and other projects. At present, nickel-iron alloy (permalloy) has become the alloy series with the most varieties and the most complete specifications among soft magnetic alloys, and plays an important role in various industries, especially in the electronics industry. [0003] my country is rich in rar...

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Problems solved by technology

Japanese application No. 55-73840 discloses a high-permeability magnetic alloy with improved wear resistance. By adding chromium, the surface wear resistance of magnetic products is improved, but the above two do not improve the magnetic properties. and

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