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1. 发明专利

JPH05246784A 失效
公开(公告)号：JPH05246784A
公开(公告)日：1993-09-24
申请号：JP35450392
申请日：1992-12-16
申请人： TDK CORP
发明人： UMEHARA SAORI , OE KAZUHIDE
IPC分类号： B28B1/00 , C04B41/87 , H05B6/64
摘要： PURPOSE:To improve the start-up temp. characteristic, to raise the ultimate temp. and to ameliorate the workability, etc., by adding >=1 kind among Sb, Ta and Nb to SnO2 and depositing the admixture over a part of a ceramic refractory base material. CONSTITUTION:A coating soln. contg. desired amts. of >=1 kind among an Sb compd., Ta compd. and Nb compd. and an Sn compd. is applied over a honeycomb refractory (e.g. cordierite), and the material is calcined at ordinary pressure and >=400 deg.C in the O2 atmosphere of air, etc., to produce a high-frequency heating element 1 contg. 50mol% of >=1 kind among Sb, Ta and Nb expressed in terms of metal. The heating element 1 pierced with an air passage hole 1a, an air fan 2 and a microwave source for generating a microwave Wmu are assembled to produce a microwave oven 10. A body 3 to be treated is placed in the oven 10, irradiated with the microwave Wmu, heated and cooked.

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