Abstract This paper presents and compares the results of investigation of the samples in the Bi2O3-P2O5-SiO2 system by means of simultaneous thermal analysis, X-ray phase analysis, and Knudsen effusion mass spectrometry. The samples were synthesized by the melt quenching technique using Bi2O3, SiO2, and NH4H2PO4. By differential scanning calorimetry, characteristic temperatures and enthalpies of phase transformations in the samples were determined. Mass losses of the samples obtained by thermogravimetric analysis in dynamic air flow were compared with those found by Knudsen effusion mass spectrometry in vacuum. Using X-ray phase analysis, unknown phases were identified in several samples. These phases might consist of previously unknown compounds containing bismuth, phosphorus, and silicon together. The results of the present study should be regarded as being preliminary information concerning phase equilibria in the Bi2O3-P2O5-SiO2 system.

中文翻译：

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Bi2O3-P2O5-SiO2 系统中样品的同时热分析：与 KEMS 数据的比较

摘要 本文介绍并比较了 Bi2O3-P2O5-SiO2 系统中样品的同时热分析、X 射线相分析和 Knudsen 渗出质谱的研究结果。样品是通过使用 Bi2O3、SiO2 和 NH4H2PO4 的熔体淬火技术合成的。通过差示扫描量热法，确定了样品中的特征温度和相变焓。将在动态气流中通过热重分析获得的样品的质量损失与在真空中通过 Knudsen 渗出质谱法发现的质量损失进行比较。使用 X 射线相分析，在几个样品中鉴定出未知相。这些相可能由以前未知的含有铋、磷和硅的化合物组成。