专利名称：Method for manufacture of high-frequency
dielectric ceramics
发明人：Kazutoshi Matsumoto,Koh Takada,Takehiro
Hyuga
申请号：US06/793108申请日：19851030公开号：US04731207A公开日：19880315
摘要：A dielectric ceramics possessing a high level of unloaded Q and low loss at highfrequency beneficial for communications at high frequency is produced by a methodwhich comprises heating a green compact of a composition represented by the generalformula: xBaO.yMgO.zTa.sub.2 O.sub. 5 (wherein x, y, and z satisfy 0.5≦x≦0.7, 0.15≦y.ltoreq. 0.25, 0.15≦z≦0.25, and x+y+z=1) to a temperature in the range of 1, 500° to 1,700°C. at a temperature increasing rate of 100° to 1,600° C./minute and subsequentlyretaining the green compact at the temperature for not less than 30 minutes.
申请人：SUMITOMO METAL MINING COMPANY LIMITED
代理机构：Watson, Cole, Grindle & Watson
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