Preparation method of iron-based nanocrystal spectroscopic standard sample

Abstract

The invention relates to a preparation method of a standard spectrum sample of Fe-based nanocrystalline. The method comprises the following steps: a chemical formula of a standard sample ratio is selected, and a raw material adding ratio is calculated; raw materials are added in a vacuum induction furnace according to the ratio, and the vacuum induction furnace is adopted to smelt the raw materials into molten steel; the molten steel is poured in a cylindrical graphite mold for heat treatment and forms steel samples; the steel samples are subjected to linear cutting, grinding and polishing treatment, and qualified steel samples are selected according to microscopic examination and ultrasonic nondestructive inspection; the qualified steel samples are subjected to uniformity analysis; a detection result is analyzed, and an average value is taken as an fixed value of the elements; and the standard sample is formed. The invention provides one preparation method of the standard spectrum sample of the Fe-based nanocrystalline by starting from chemical component design, a smelting process and a final sample processing process, a prepared product can be excited effectively and uniformly by a spectrometer, so that more accurate data are obtained, and guarantee is provided for development and production of a Fe-based nanocrystalline material.

Description

technical field [0001] The invention relates to a preparation method of a spectral standard sample, in particular to a preparation method of an iron-based nanocrystal spectral standard sample. Background technique [0002] The iron-based nanocrystalline alloy is mainly composed of Fe elements, and a small amount of Nb, Cu, Si, and B elements are added to form an alloy. After rapid solidification, an amorphous material is formed. After heat treatment, microcrystals with a diameter of 10-20nm are obtained. Distributed on an amorphous substrate, it is called iron-based nanocrystalline and iron-based ultrafine crystal materials. Due to its specific structure, it has a wide range of applications. [0003] In order to improve the stability of product performance, its composition consistency is very important. At present, spectrometers are commonly used to detect the composition of iron-based nanocrystals, but spectrometers need qualified standard samples to detect reasonable comp...

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Problems solved by technology

[0003] In order to improve the stability of product performance, its composition consistency is very important. At present, spectrometers are commonly used to detect the composition of iron-based nanocrystals, but spectrometers need qualified standard samples to detect reasonable composition values. Iron-based nanocrystalline alloy standard samples are due to their alloy There are many elements, and the smelting is difficult. So far, no national standard material has been formed, and there are few ideal iron-based nanocrystalline standard samples in actual use. There is Nb element with a high melting point in the alloy composition, which is easy to burn out The B element and the easily oxidizable Si element bring greater difficulty to the design of the smelting process, and the traditional sampling method will lead to the formation of pores and cracks in the sample block. Low, large component segregation between samples, which has higher requirements for the production of iron-based nanocrystalline spectral standards

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