The influence of Bi₂O₃ and melting temperature on the thermal and structural properties of xBi₂O₃-(60-x) ZnO-40B₂O₃ glasses has been investigated in this study. It is expected that these factors can be used to control the degree of reduction of Bi₂O₃, and the relationship between these factors and the color change of the process for bismuth glass is discussed. Due to high-temperature melting, the bismuth-doped borate glasses have changed into dark/black from original transparent yellow and the light transmittance will decrease, so it is not used in optical applications. The thermal properties of glass are measured by a thermomechanical analyzer (TMA), and the glass structure is analyzed by FTIR and XPS. The results show that the glass is mainly composed of [BiO₆] octahedron, [BiO₃] triangle, [BO₄] tetrahedron, and triangle [BO₃] units, and the network of the glass system is mainly bonded by B-O-B, B-O-Zn, B-O-Bi, and Bi-O-Bi. The glass thermal expansion coefficient (CTE) of this glass system increases with the increase of Bi₂O₃ content, and the O1s nuclear electron binding energy shifts to the lower energy direction with the increase of Bi₂O₃ addition. In terms of FTIR, as the melting temperature rises, the B-O-B bonding vibration concentration of [BO₄] inside the borate glass decreases, and the density of B-O-B bonding vibration of [BO₃] increases, Moreover, the increase in melting temperature increases the probability of reducing Bi ions to Bi⁰, reduces the bonding of Bi-O-B, and increases the bonding of B-O-B, and the CTE also slightly decreases.

中文翻译：

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Bi2O3-ZnO-B2O3玻璃体系结构与热性能的关系

本研究研究了Bi ₂ O ₃和熔化温度对xBi ₂ O ₃ -(60-x) ZnO-40B ₂ O ₃玻璃的热性能和结构性能的影响。预计这些因素可用于控制Bi ₂ O ₃的还原程度，并讨论了这些因素与铋玻璃工艺颜色变化之间的关系。由于高温熔化，掺铋硼酸盐玻璃从原来的透明黄色变成了暗/黑色，透光率会降低，因此不用于光学应用。玻璃的热性能通过热机械分析仪（TMA）进行测量，玻璃结构通过FTIR和XPS进行分析。结果表明，玻璃主要由[BiO ₆ ]八面体、[BiO ₃ ]三角形、[BO ₄ ]四面体和三角形[BO ₃]单元，玻璃体系的网络主要由BOB、BO-Zn、BO-Bi和Bi-O-Bi结合而成。该玻璃体系的玻璃热膨胀系数（CTE）随着Bi ₂ O ₃含量的增加而增加，O1的核电子结合能随着Bi ₂ O ₃添加量的增加而向低能量方向移动。从FTIR来看，随着熔融温度的升高，硼酸盐玻璃内部[BO ₄ ]的BOB键振动浓度降低，[BO ₃ ]的BOB键振动密度增大，而且，熔融温度的升高使硼酸盐玻璃内部的BOB键振动密度增大。将 Bi 离子还原为 Bi ^{0 的}概率, 减少了 Bi-OB 的结合，增加了 BOB 的结合，CTE 也略有下降。