Fe-Ga based magnetostrictive wire and preparation method thereof

Abstract

The invention relates to an Fe-Ga based magnetostrictive wire and a preparation method thereof. The raw material component used by the method is (Fel-x-yGaxMy)l-z(NC)z, wherein M is selected from one or more types of all transition elements other than Fe, B, Be, Al, In, Ge, Sn, Sb, Bi, Pb, S and Se, and N is Nb, Ti, Si, Zr, Mo and the like, x is equal to 0.10 to 0.30, y is equal to 0.00 to 0.05, z is equal to 0.00 to 0.02, and the balance Fe. The method processes an Fe-Ga alloy into a finished wire through cold- or warm-hydrostatic extrusion. The invention solves the problems of poor plasticity, larger flow friction resistance and high processing cost when in Fe-Ga alloy plastic processing. The diameter of the prepared Fe-Ga based magnetostrictive wire is between 0.01mm and 2mm, the surface finishment is high, and the magnetostrictive properties under the low-magnetic field environment can reach 180*10-6.

Description

A kind of Fe-Ga base magnetostrictive wire and preparation method thereof technical field The invention belongs to the field of magnetic materials, and relates to a Fe-Ga-based magnetostrictive wire and a preparation method thereof. Background technique As a kind of transducing material, magnetostrictive material has been applied in the field of transducing technology since the 1940s and 1950s. Because when the magnetostrictive phenomenon occurs, a large force can be generated, and the response time is also very short. Later, magnetostrictive materials are also used in technical fields such as driving and sensing. In the field of sensors, including torque sensors, pressure sensors, displacement sensors, etc., magnetostrictive wires are widely used. The common magnetostrictive wires are mostly Fe-Ni, Fe-Ni-Co, etc. These alloys have good plasticity and are good for processing into wires, but the magnetostrictive performance is low, which limits the accuracy and measurement...

AI Technical Summary

Problems solved by technology

However, for the conventional hydrostatic extrusion method, since the raw material alloy is required to have good plasticity when preparing the metal wire, such as the elongation of the material is required to be greater than 5%, therefore, for Fe-Ga alloys with poor room temperature plasticity, It is difficult to directly use the conventional static night extrusion method

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