High-corrosion-resistance iron-based amorphous alloy material and preparation method thereof

Abstract

The invention discloses a high-corrosion-resistance iron-based amorphous alloy material and a preparation method thereof. The iron-based amorphous alloy material has high corrosion resistance, high amorphous forming capability and excellent magnetic properties. The chemical formula of the alloy material is FeaCobSicBdPeCfMog, wherein a, b, c, d, e, f and g are the percent contents of various corresponding component atoms by mass respectively, a is greater than or equal to 60 and less than or equal to 80, b is greater than or equal to 5 and less than or equal to 12, c is greater than or equal to 5 and less than or equal to 10, d is greater than or equal to 7 and less than or equal to 13, e is greater than or equal to 3 and less than or equal to 8, f is greater than or equal to 1 and less than or equal to 4 and g is greater than or equal to 0 and less than or equal to 7 with the sum of a, b, c, d, e, f and g being 100. The preparation method of the alloy material comprises the steps of preparing raw materials, melting, cooling to form alloy ingots, removing impurities on the surfaces of alloy ingots, preparing iron-based amorphous alloy thin sheets or iron-based amorphous alloy bars and carrying out stress relief annealing. According to the alloy material and the preparation method thereof disclosed by the invention, the contents of the components in the FeCoSiBPCMo alloy system are controlled to be close to an eutectic point, a closely packed structure is easily formed, the amorphous forming capability is achieved, and the high corrosion resistance and excellent magnetic properties are simultaneously obtained; therefore, the iron-based amorphous alloy material can be used as an electromagnetic device in harsh environments.

Description

Technical field [0001] The invention relates to the technical field of amorphous alloy materials and their preparation, in particular to an iron-based amorphous alloy material with high corrosion resistance and a preparation method thereof. Background technique [0002] In industrial applications, iron-based magnetic materials have a wide range of applications. They often work in corrosive environments such as acids and sewage. The economic loss caused by system replacement due to corrosion is very serious. Therefore, the materials used in electromagnetic devices are required to have good corrosion resistance and Excellent magnetic properties. [0003] In recent years, there has been a trend of using electric drive devices and electronic control devices to realize product drive, automatic control, and multi-function. One of its key core materials is soft magnetic materials. Therefore, industrial production, machinery manufacturing and other fields urgently need to develop soft ma...

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Problems solved by technology

In addition, the corrosion solution of the corrosion test is a neutral NaCl solution, and the test is not carried out in a sulfuric acid solution.

[0007] patent Authorized announcement number: CN101928896B, which discloses a large amorphous forming ability iron-based bulk amorphous magnetic alloy material and its preparation method. The amorphous alloy has a relatively large amorphous forming ability and can be made into an amorphous rod with a diameter of 6mm. , and has good soft magnetic properties (3.7-36.3A / m), but the soft magnetic properties cannot be achieved (below 2.8A / m)

In addition, the invention has no corrosion resistance research content

[0008] Patent application publication number: CN103589959A, which discloses an iron-based amorphous alloy material. The amorphous alloy cannot be prepared into a block, but can only be prepared into strips

In addition, the coercive force of the amorphous alloy is 15.6-08.2A / m, which cannot be lower than 2.8A / m

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