Phase formation during liquid phase sintering of ZnO ceramics
Source abstract
Abstract
ZnO doped with Bi$_2$O$_3$ and Sb$_2$O$_3$ (ZBS), is the basic system for ceramic varistors. Phase formation during sintering of ZBS was measured in situ, using 1 mm thick samples and synchrotron X-rays. Sintering shrinkage was measured in different atmospheres by an optical method. Thermodynamic calculations were performed to explain phase formation, composition, stability of additive oxides and influence of the oxygen fugacity on sintering. Sb$_2$O$_4$, pyrochlore, trirutile and spinel were formed at temperatures of 500–800 °C. The oxidation of antimony was controlled by the oxygen partial pressure and affected both, phase formation and sintering kinetics, in the ZBS system.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Metallurgical Processes and Thermodynamics · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
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