Magneto-elastic amorphous wire material and magnetoelastic displacement transducer

Abstract

Magneto-elastic amorphous alloy material and a preparation method thereof are provided. The material is composed of FexReyBz, wherein, Re is one or more than two of La, Sm, Tb, Dy and Y. The preparation method is to mix and melt the FexReyBz into master alloy according to the atom percentage, produce amorphous wires on self-developed wire spraying equipment, strengthen internal stress through drawing the wires and improve the magneto-elastic performance of the wires. The material is provided with the 10<-3> vertical large magnetostrictive coefficient. And through the quenching and rapid setting preparation method, extremely large inner stress gradient from the surface to the core of the wires is made. The material is also provided with large inner stress anisotropy performance, and part of magneto-elastic performance is produced. The surface crystallization layer of the wires, the thickness of which is tens of nanometers to hundreds of nanometers, and amorphous matrixes produce magnetocrystalline anistotropy energies which strengthen the magneto-elastic performance of the wires. The material is provided with the vertical large magnetostrictive coefficient and makes use of a self-developed displacement sensor and a measurement instrument. Compared with the present import super-magnetostrictive displacement sensor, the sensor has the advantages of large investigation depth, high precision and strong vibration resistance capacity.

Description

technical field [0001] The invention relates to a novel material with magnetoelastic effect and a production method thereof, and a magnetoelastic displacement sensor made of the material, which belongs to the field of manufacturing technology. Background technique [0002] The level measurement sensor is an indispensable and important device in the industrial control process. There are many domestic level sensor manufacturers, but most of the products have low technical content. Most of the high-end modern new sensors are imported, especially the level sensors used by large enterprises are basically imported sensors. Therefore, the development and production of high-grade and advanced level sensors is the key to occupying the domestic level sensor market. Among them, due to the large volume of the storage tank in the tank farm, the liquid level sensor requires a large range and high precision. The traditional liquid level sensor is complicated to install, easily affected b...

AI Technical Summary

Problems solved by technology

At present, the magnetoelastic liquid level sensor commonly used has disadvantages such as low range, low precision, and especially high price, which is not conducive to localization.