| abstract |
The invention provides a room temperature magnetostrictive material and a preparation method thereof. The molecular formula is Mn 1‑x Ni x CoSi, and the value range of x is 0.02≤x≤0.03. In the preparation process, each raw material is also weighed according to the stoichiometric ratio Mn:Ni:Co:Si=(1‑x):x:1:1, and the value range of x is also 0.02≤x≤0.03. After mixing the raw materials evenly The prepared raw materials are also cleaned, smelted, tube sealed, strong magnetic field annealed, post-annealed and sample taken out in sequence, wherein the raw materials are also cleaned by hydrochloric acid solution, and the arc melting furnace is also pre-removed by elemental Zr before smelting In the oxygen step, the vacuum sealing of the alloy ingot after crushing also adopts a double-layer quartz glass tube. A room temperature magnetostrictive material prepared by the invention is annealed in a high temperature and strong magnetic field to form a textured and dense alloy sample. |