Crystal phase content quantitative analysis system and method

Abstract

Crystal phase content quantitative analysis system and method, the system mainly includes a global strategy module and a data collection and processing module; the global strategy module completes a global scan for the sample, is responsible for locating and estimating the size of the particles in the selected area of ​​the sample, and estimating the particle size Carry out statistics, according to the statistical data, and the detection time or the number of detection particles input by the user, the particles in the selected area are screened according to the particle size, and the path planning for data collection is carried out according to the screened particles; the data collection and processing module is responsible for The three-dimensional electron diffraction data of the target particles are collected and processed in real time to obtain particle unit cell parameters and symmetry information. The invention also includes a quantitative analysis method for crystal phase content. The invention can detect samples with unknown crystal phases, greatly reduce manual intervention, detect low-content crystal phases in samples, and provide users with accurate crystal phase information.

Description

technical field [0001] The invention relates to a quantitative analysis system and method for crystal phase content. Background technique [0002] The detection of crystalline phase content in samples is crucial for many application scenarios, such as mineral mining and detection, chemical industry, pharmaceutical industry, etc. The detection of crystal phase content is different from the detection of elements. Element detection can be obtained by energy spectrum, chromatography and many other methods. But the definition of crystal phase includes the kind of atoms and the arrangement of atoms. That is to say, substances in different crystal phases can be composed of different elements, or can be composed of one or the same combination of elements, but the arrangement of atoms is different. [0003] Powder X-ray diffraction is currently the main method for the detection of crystal phase content. Through the X-ray diffractometer, the diffraction data of the sample is colle...

AI Technical Summary

Problems solved by technology

During the implementation of this technology, experienced technicians need to spend a lot of energy and time on data processing. In the process of data processing, human factors have a great influence on the results.

At the same time, since there is no other feasible method, its accuracy cannot be cross-validated

Moreover, for many samples with unknown crystal phases, the powder X-ray diffraction technique cannot determine the content of each phase

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