共 21 条
[21]
Ushakov DF, 1975, FIZ KHIM STEKLA, V1, P151
Thermal studies of ZnO-B2O3-P2O5-TeO2 glasses
被引：42
作者：
Mosner, P.
[1
]
Vosejpkova, K.
[1
]
Koudelka, L.
[1
]
Benes, L.
[2
]
机构：
[1] Univ Pardubice, Fac Chem Technol, Dept Gen & Inorgan Chem, Pardubice 53210, Czech Republic
[2] Acad Sci, Inst Macromol Chem, Joint Lab Solid State Chem, Fac Chem Technol,Vvi, Pardubice 53210, Czech Republic
关键词：
Borophosphate glasses;
Tellurite glasses;
Thermal properties;
Thermal stability;
Crystallization;
BOROPHOSPHATE;
CRYSTALLIZATION;
PHOSPHATE;
LITHIUM;
B2O3;
D O I：
10.1007/s10973-011-1535-4
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The effect of TeO2 additions on the thermal behaviour of zinc borophosphate glasses were studied in the compositional series (100 - x)[0.5ZnO-0.1B(2)O(3)-0.4P(2)O(5)]-xTeO(2) by differential scanning calorimetry, thermodilatometry and heating microscopy thermal analysis. The addition of TeO2 to the starting borophosphate glass resulted in a linear increase of glass transition temperature and dilatometric softening temperature, whereas the thermal expansion coefficient decreased. Most of glasses crystallize under heating within the temperature range of 440-640 degrees C. The crystallization temperature steeply decreases with increasing TeO2 content. The lowest tendency towards crystallization was observed for the glasses containing 50 and 60 mol% TeO2. X-ray diffraction analysis showed that major compounds formed by annealing of the glasses were Zn2P2O7, BPO4 and alpha-TeO2. Annealing of the powdered 50ZnO-10B(2)O(3)-40P(2)O(5) glass leads at first to the formation of an unknown crystalline phase, which is gradually transformed to Zn2P2O7 and BPO4 during subsequent heating.
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页码：1129 / 1135
页数：7
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