电陶瓷晶界化学诱导形成动力学的形成机理及原位观察-猫眼课题宝

电陶瓷晶界化学诱导形成动力学的形成机理及原位观察

批准号：

09450242

负责人：

MIZUTANI Nobuyasu

金额：

$8.96万

依托单位：

Tokyo Institute of Technology

依托单位国家：

日本

项目类别：

Grant-in-Aid for Scientific Research (B)

财政年份：

1997

资助国家：

日本

项目状态：

已结题

起止时间：

1997 至 1999

来源：

https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450242/

关键词：

electroceramics microstructure liquid phase grain boundary thin film varistor zinc oxide zirconium oxide

项目摘要

项目成果

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中文摘要

翻译

In the field of electro-ceramics，the liquid phase sintering techniques are used frequently in order to manufacture many ceramic chipsat lower temperature. However，phenomena including property change and appearance of electronic function beside only sinteringbehavior not been studied.In this research，mainly the formation mechanism of grain boundary layer having different chemical constituent andstructure with grain was studied on the point of chemical dynamics.(1) Establishment of the detailedphase diagram of ZnO-PrO D22-x D2 system up to 1600℃(2)The ZnO-PrO D22-x D2 system has nosolid solution region and one eutectic point at 1328℃.(3)By addition of CoO，liquidous temperature decresed to 1280℃。(4)the state of liquid phase in grain boundarieschanged strongly with oxygen pressure.(5) By infilutration of PrO - D22-x - D2 to grain boundaryregion from the surface of pure ZnO sintered body, the good varisor wag formed.Through this study我们发现了一个角色的liquid phase to appearance of properties，from the view point of chemical formation of grain boundary

英文摘要

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

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