期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 36, 期 10, 页码 1383-1388出版社
MINERALS METALS MATERIALS SOC
DOI: 10.1007/s11664-007-0271-9
关键词
dielectric proper-ties; barium titanate; regression analysis; uniform design; X8R ceramics
Regression analysis based on uniform design was introduced as a new approach for designing BaTiO3-based X8R ceramics. The amounts of Nb2O5, Nd2O3, Zn0.8Mg0.2TiO3 (ZMT), and magnesium lithium borosilicate (MLBS) were the four investigated factors with respect to the dielectric constant at room temperature (epsilon) and temperature-capacitance characteristics (TCC) at 125 degrees C (TCC125 degrees C) and TCC150 degrees C. Experiments were designed according to the uniform design with four factors for each at twelve levels. For each response, the second-order polynomial equations were obtained by multiple regression analysis. As a result, the empirical mathematical models could successfully predict the experimental results with very good accuracy. Finally, based on optimization strategy, we succeeded in producing lead-free X8R ceramics with various dielectric constants ranging from 1500 to 3300, which is promising for developing X8R MLCC with different capacities.
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