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Method for Quantitative Analysis of Components of Powder Mixtures

A powder mixture, quantitative analysis technology, applied in the analysis of materials, the use of wave/particle radiation for material analysis, measuring devices, etc., can solve the problems of inability to quantitatively analyze the components of powder mixtures, and the inability to accurately quantitatively analyze the components of powder mixtures, to achieve The effect of simple method and wide application prospect

Active Publication Date: 2018-06-15
广西三环高科拉曼芯片技术有限公司
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Problems solved by technology

[0003] At present, a commonly used X-ray diffraction quantitative analysis method is the standard sample method. This standard sample method is used to quantitatively analyze polycrystalline powders. The analysis process often only uses the diffraction intensity information of the strongest peak or three strong peaks, and cannot Accurate quantitative analysis of the composition of the powder mixture, let alone the quantitative analysis of the composition of the powder mixture with overlapping peaks

Method used

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  • Method for Quantitative Analysis of Components of Powder Mixtures
  • Method for Quantitative Analysis of Components of Powder Mixtures
  • Method for Quantitative Analysis of Components of Powder Mixtures

Examples

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Effect test

Embodiment 1

[0056] Provides magnesium oxide (MgO) crystal powder and aluminum oxide (Al 2 o 3 ) 3 kinds of powders to be tested composed of mixed amorphous powder X 1 、X 2 、X 3 , the difference between these three powders to be tested is that the mass percentages of the magnesia crystalline powder and the alumina amorphous powder are different, and the same X-ray diffractometer is used to scan the powder X 1 、X 2 、X 3 Carry out diffraction analysis, the diffraction angle is from 20 degrees to 80 degrees, and the powder X to be tested is obtained at a rate of 4 degrees per minute 1 、X 2 、X 3 X-ray diffraction spectrum; without changing the parameters of the X-ray diffractometer, the diffraction angle is from 20 degrees to 80 degrees, and the X-ray diffraction of magnesium oxide crystal powder and aluminum oxide amorphous powder are respectively obtained at a rate of 4 degrees per minute. Spectrum; all obtained X-ray diffraction spectra are centralized, and the intensity data of the...

Embodiment 2

[0063] Provided by titanium oxide (TiO 2 ) crystal powder, zinc oxide (ZnO) crystal powder and cerium oxide (CeO 2 13 kinds of powders to be tested Y composed of at least two kinds of mixtures in ) crystal powder 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 , Y 10 , Y 11 , Y 12 , Y 13 , the difference between the 13 kinds of powders to be tested is only the mass percentages of titanium oxide, zinc oxide and cerium oxide, and the same X-ray diffractometer is used to carry out diffraction analysis on the 13 kinds of powders to be tested in a θ-2θ scanning mode, The diffraction angle is from 20 degrees to 80 degrees, and the X-ray diffraction spectra of the 13 powders to be tested are respectively obtained at a rate of 4 degrees per minute; without changing the parameters of the X-ray diffractometer, the diffraction angle is from 20 degrees to 80 degrees. degrees, respectively obtain the X-ray diffraction spectra of titanium oxide crystal powder, zinc oxide crys...

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Abstract

The invention provides a method for quantitatively analyzing powder mixture components. The method includes the following steps that to-be-tested powder is provided, an X-ray diffraction spectrum of the to-be-tested powder is acquired, and the to-be-tested powder is formed by mixing two or three kinds of standard sample powder; X-ray diffraction spectra of the standard sample powder are respectively provided; the X-ray diffraction spectra of the to-be-tested powder and the standard sample powder are analyzed through a main component analysis method, and score values of the to-be-tested powder and the standard sample powder are respectively obtained; according to the score values of the to-be-tested powder and the standard sample powder, a score plot is established, and score value points of the standard sample powder in the score plot are connected through a straight line to obtain a component analysis line; the position of the score value of the to-be-tested powder in the component analysis line is found, and the mass percentage of the standard sample powder in the to-be-tested powder is calculated according to the absorbing-coefficient-modified lever raw formula. The invention further relates to a method for quantitatively analyzing the mass percentage of pure phase powder in the to-be-tested powder.

Description

technical field [0001] The present invention relates to a method for quantitatively analyzing the composition of powder mixtures. Background technique [0002] With the development of modern material science, the research on various crystalline and amorphous materials has become more and more in-depth, and the requirement for quantitative analysis of the phase composition of materials has become increasingly urgent. As a classical characterization method, X-ray diffraction technique is widely used in this kind of research. X-rays are scattered when encountering regularly arranged atoms or ions in the crystalline phase, and the phase of the scattered X-rays is strengthened in certain directions, thus showing a unique diffraction phenomenon corresponding to the crystalline phase structure. [0003] At present, a commonly used X-ray diffraction quantitative analysis method is the standard sample method. This standard sample method is used to quantitatively analyze polycrystall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N23/207
CPCG01N23/207
Inventor 李江昊张政军
Owner 广西三环高科拉曼芯片技术有限公司
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