Quantitative analysis method of carbide content in high-temperature alloy

By combining metallographic sample preparation and electron probe microanalysis with image analysis software, the accuracy and applicability issues of carbide content analysis in high-temperature alloys have been solved. This method enables accurate identification of carbide content in high-temperature alloys and simplifies the processing steps, making it suitable for quantitative analysis of carbide content in high-temperature alloys.

CN122409730APending Publication Date: 2026-07-17HUADIAN ELECTRIC POWER SCI INST CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUADIAN ELECTRIC POWER SCI INST CO LTD
Filing Date
2025-07-31
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In the existing technology, the quantitative analysis method for carbide content in high-temperature alloys is inaccurate and cannot effectively identify and distinguish them, resulting in insufficient accuracy of carbide content analysis results. This fails to effectively solve the problems of narrow applicability and low accuracy of the quantitative analysis method for carbide content in the existing technology.

Method used

High-temperature alloy samples were prepared using metallographic sampling. The mass percentage distribution of each element was measured by electron probe microanalysis. The surface distribution of the main elements was used, and the content of carbides was statistically analyzed by image analysis software. This simplified the sample processing steps and avoided chemical or electrolytic etching treatments.

Benefits of technology

It improves the accuracy and applicability of carbide content analysis, simplifies the operation process, reduces costs, and can effectively identify and distinguish complex carbides, especially those rich in W and Ta.

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Abstract

本发明涉及一种高温合金中碳化物含量的定量分析方法,属于金属材料定量分析技术领域,解决现有高温合金中碳化物含量的分析方法适用性窄、分析结果准确性低的问题。包括采用金相制样法,经砂纸打磨和抛光后制备待测碳化物含量的高温合金金相试样;采用电子探针微区分析测量获得高温合金中各元素的质量百分比分布图,获取高温合金中碳化物的种类数和各类碳化物中含有的主要元素;根据确定的各类碳化物中含有的主要元素,调整观测参数,观测主要元素所在的区域,获得各类碳化物中主要元素的面分布图;采用图像分析软件统计分析各类碳化物中主要元素的面分布图中,主要元素区域像素占元素面分布图的比例,即为该碳化物的含量。本发明方法准确性高。
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