| 혼합물계획법에 의한 Li2O-ZrO2-SiO2 유리의 이온전도도와 조성의 관계 |
| 강은태, 김명중1, 김재동2 |
경상대학교 나노.신소재공학부, 경상대학교 공학원
1공간세라믹스(주) 기술연구소
2ATT(주) |
| Relationship between Ionic Conductivity and Composition of Li2O-ZrO2-SiO2 Glasses Determined from Mixture Design |
| Eun-Tae Kang, Myoung-Joong Kim1, Jae-Dong Kim2 |
Division of Nano & Advanced Materials Science and Engineering, Engineering Research Institute, Gyeongsang National University
1R&D center, Gonggan Ceramic Co., Ltd.
2ATT Ltd. |
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| ABSTRACT |
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The ionic conductivity of $Li_2O-ZrO_2-SiO_2$ glasses has been designed and analyzed on the basis of a mixture design experiment with constraints. Fitted models for the activation energy and the ionic conductivity are as follows: $Q(kJ/moi)=54.8565x_1+144.825x_2+133.846x_3-170.908x_1x_3-334.338x_2x_3$ $log{sigma}(300K)=-5.00245x_1-1.17876x_2-15.5173x_3+17.4522x_1x_3$. The electrical properties are very sensitive to the ratio of $Li_2O/SiO_2$. The effect of $ZrO_2$ is less than that of this ratio but $ZrO_2$ component attributes to the reduction of the activation energy. The optimal composition for best ionic conduction based on these fitted models is $55Li_2O{cdot}10ZrO_2{cdot}35SiO_2$. Its activation energy and ionic conductivity at 300 K are 46.98 kJ/mol and $1.08{times}10^{-5}{Omega}^{-1}{cdot}cm^{-1}$, respectively. |
| Key words:
Experimental design, Mixture design, $Li_2O-ZrO_2-SiO_2$ glass, Ionic conductivity, Optimal composition |
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