Formation Mechanism and In-situ Observation of Chemically Induced Formation Dynamics of Grain Boundary in Electro-ceramics

在电子陶瓷领域，液体相位交错技术经常被用于制造低温度下的许多陶瓷芯片。该现象包括电子功能两侧的特性的变化和出现，但尚未研究。在这项研究中，主要是谷物边界层具有不同化学结构和结构的形成机制，而谷物是在化学动力学方面研究的。（1） Establishment of the detailed phase diagram of ZnO-PrO-D22-x-D2 system up to 1600（2） The ZnO-PrO-D22-x-D2 system has no solid solution region and one eutectic point at 1328（）。（3）通过添加CoO，液体温度降低到1280℃。（4）谷物边界中液体阶段的状态，由于氧气压力而被强烈地改变了。（5）通过将PrO D22-x D2从纯ZnO接口体表面的谷物边界区域渗透到谷物边界区域，形成良好的变异器，通过本研究，我们讨论了液体阶段在性能方面的作用，等等，从谷物边界化学形成的观点出发。

In the field of electro-ceramics, the liquid phase sintering techniques are used frequently in order to manufacture many ceramic chips at lower temperature. However, the phenomena including property change and appearance of electronic function beside only sintering behavior have not been studied.In this research, mainly the formation mechanism of grain boundary layer having different chemical constituent and structure with grain was studied on the point of chemical dynamics.(1) Establishment of the detailed phase diagram of ZnO-PrOィイD22-xィエD2 system up to 1600℃(2) The ZnO-PrOィイD22-xィエD2 system has no solid solution region and one eutectic point at 1328℃.(3) By addition of CoO, the liquidous temperature decresed to 1280℃.(4) The state of liquid phase in grain boundaries changed strongly with oxygen pressure.(5) By infilutration of PrOィイD22-xィエD2 to grain boundary region from the surface of pure ZnO sintered body, the good varisor wag formed.Through this study, we discussed the role of liquid phase to appearance of properties, etc. from the view point of chemical formation of grain boundary