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Method for determining chemical ingredients in metal material matrix

A metal material and chemical composition technology, applied in the field of modern and novel atom probe measurement, can solve the problems of large data deviation and poor accuracy, and achieve the effect of good repeatability and accurate analysis results

Inactive Publication Date: 2007-09-05
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other methods are to count the signal strength, and need to consider many factors and parameters, which can only be obtained through complex calculations. The accuracy is poor and the data deviation is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: Analyzing the chemical composition of a certain steel type with the above-mentioned method of the present invention, and comparing with the results of traditional chemical analysis methods. The test analysis results are shown in the following table 1 (atomic percentage):

[0016] alloy element

[0017] As can be seen from Table 1, analyze the chemical composition (atomic percentage) of certain steel grade with the inventive method, except C element, other each element is very close to the result that chemical method records. In this embodiment, a total of four analyzes were performed, and the repeatability was also good. Since the C element will form carbide particles in the steel, the content of the C element in the matrix is ​​obtained in this embodiment, so it is lower than the result obtained by the chemical method.

Embodiment 2

[0018] Embodiment 2: Analyze the chemical composition of a certain copper alloy with the above-mentioned method of the present invention, and compare with the result obtained by the traditional chemical analysis method. The test analysis results are shown in the following table 2 (atomic percentage):

[0019] alloy element

[0020] As can be seen from Table 2, the chemical composition (atomic percentage) of a certain copper alloy analyzed by the inventive method is very close to the result measured by chemical methods. In this embodiment, a total of five analyzes were performed, and the repeatability was also very good.

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PUM

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Abstract

A method for determining chemical composition in base body of metal material includes applying 3-D atomic probe and relevant computer software to carry out quantitative analysis on chemical composition of metal material base body, enabling to carry out quantitative analysis once on all elements contained in metal and enabling to carry out individual quantitative analysis on fine separated out particles.

Description

technical field [0001] The invention relates to a method for measuring chemical components in a metal material matrix, which is different from traditional chemical analysis methods and belongs to the technical field of modern and novel atomic probe measurement methods. Background technique [0002] Modern materials science relies heavily on the understanding of the relationship of material properties to their composition and microstructure. In addition to traditional chemical analysis techniques, the chemical composition analysis of materials includes mass spectrometry, ultraviolet, visible light, infrared spectroscopy, gas chromatography, liquid chromatography, nuclear magnetic resonance, X-ray fluorescence spectroscopy, Auger and X-ray photoelectron spectroscopy, electron probes, laser probes, etc. [0003] For metals containing multiple elements, traditional chemical analysis techniques can only determine the exact content of one element per test, and it is an average co...

Claims

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Application Information

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IPC IPC(8): G01N27/00G01N1/32
Inventor 刘文庆周邦新刘庆冬虞伟钧褚于良李强
Owner SHANGHAI UNIV