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首页> 外文期刊>Steel Research International >Characterization of Multiphase Mixtures of Calcium Aluminates and Magnesium Aluminate Spinel Using Time-Gated Raman Spectroscopy
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Characterization of Multiphase Mixtures of Calcium Aluminates and Magnesium Aluminate Spinel Using Time-Gated Raman Spectroscopy

机译：使用时间门控拉曼光谱法表征铝铝铝铝铝铝铝铝和镁铝酸镁的混合物

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摘要

In aluminum-killed calcium-treated steels, the characterization of multiphase oxides found in the CaO-MgO-Al2O3 system is essential for the study of inclusion formation, modification, and the control process. Herein, Raman spectroscopy is used as a characterization technique for the multiphase mixtures of MgO center dot Al2O3 spinel and calcium aluminate phases of C12A7, C3A, and CA. Multiphase samples of C12A7-CA-MA and C12A7-C3A-MA are synthesized from MgO center dot Al2O3 spinel and calcium aluminates with varying phase content. The relative intensity of the Raman peaks is qualitatively used for the most primary phases present in the sample. Regression models are also identified for predicting the phase composition. Prediction model identification is conducted using the successive projection algorithm (SPA) for feature selection and the partial least squares regression (PLS) model as a regressor. The identified prediction models show a reasonably good prediction performance. Herein, the time-gated Raman spectroscopy technique to characterize the multiphase mixture of magnesium aluminate spinel and calcium aluminate phases of CA, C12A7, C3A is used, and the potential application for inclusion characterization is demonstrated.
机译：在铝杀死的钙处理钢中，Ca-MgO-Al2O3系统中发现的多相氧化物的表征对于包含形成，改性和对照过程的研究至关重要。在此，拉曼光谱用作MgO中心点Al2O3尖晶石的多相混合物的表征技术，以及C12A7，C3A和CA的钙铝酸钙相。 C12A7-CA-MA和C12A7-C3A-MA的多相样品由MgO中心点Al 2 O 3尖晶石和具有不同相含量的钙铝酸盐合成。拉曼峰的相对强度适用于样品中存在的最基阶段。还识别回归模型以预测相组合物。使用连续投影算法（SPA）进行预测模型识别，用于特征选择和局部最小二乘回归（PLS）模型作为回归线。所识别的预测模型显示出合理良好的预测性能。在此，使用时浇注的拉曼光谱技术，用于表征铝酸镁型尖晶石和Ca，C12a7，C3a的钙铝酸钙阶段的多相混合物，并且对包含表征的潜在施用进行了说明。

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