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Dielectric ceramic body including TIO2 dispersion in crystallized cordierite matrix phase, method of producing the same, and circuit board using the same
Dielectric ceramic body including TIO2 dispersion in crystallized cordierite matrix phase, method of producing the same, and circuit board using the same
A dielectric ceramic body prepared by firing a mixture of a cordierite glass powder and a TiO.sub.2 powder, or a mixture of these powders and a RE.sub.2 Ti.sub.2 O.sub.7 powder (RE representing a rare earth element), wherein particles of the TiO.sub.2 powder or particles of the TiO.sub.2 powder and the RE.sub.2 Ti.sub.2 O.sub.7 powder are dispersed in a matrix phase of crystalline cordierite produced from the fired cordierite glass powder. In the first case, the cordierite glass powder and the TiO.sub.2 powder have a proportion which satisfies 70≦x 100, 0 y. ltoreq.30, and x+y=100, where x and y represent contents in weight % of the cordierite glass powder and said TiO.sub.2 powder, respectively. In the second case, the cordierite glass powder, TiO.sub.2 powder and the RE. sub.2 Ti.sub.2 O.sub.7 powder have a proportion which satisfies 50≦ x 100, 0 y≦30, 0 z≦ 40, and x+y=100, where z represents a content in weight % of the RE.sub.2 Ti.sub.2 O.sub.7 powder.
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机译:通过烧制堇青石玻璃粉末和TiO 2粉末的混合物,或这些粉末与RE 2 Ti 2 O 7粉末的混合物制备的介电陶瓷体(RE代表稀土元素),其中TiO.2粉末或TiO2粉末和RE.2 Ti.2 O7粉末的颗粒分散在基质相中由烧制的堇青石玻璃粉末产生的结晶堇青石。在第一种情况下,堇青石玻璃粉末和TiO 2粉末的比例满足70&lE; x <100,0 展开▼