公开(公告)号：KR1020010028177A

公开(公告)日：2001-04-06

申请号：KR1019990040271

申请日：1999-09-18

Applicant: 한국과학기술연구원

Inventor： 김현재 ,  정형진 ,  윤석진 ,  최지원 ,  박용욱 ,  강종윤

IPC: C04B35/465 ,  H01B3/12

CPC classification number: H01G4/1254 ,  C04B35/465

Abstract: PURPOSE: Provided is a composition of a ceramic dielectric for high frequency which has over epsilon30 of electric permittivity, less dielectric loss, and low sintering temperature, bringing down the cost of production, and whose TCF is adjustable within the effective range. CONSTITUTION: A composition of the formula (1) is manufactured by the following steps. CaCO3, Li2CO3, Nb2O5, and TiO2, as starting materials, are dried for 10 hours at 600 deg.C. The materials are mixed according to various composition rates, and, then, are calcined at 850 deg.C for about 2 hours in the atmosphere. After grinding the materials into powder, 5 % of PVA solution is added to the powder to make a cylindric sample. The sample is heated at 600 deg.C for about 1 hour to eliminate organic binder. And the sample is sintered at between 1000 and 1300 deg.C for 1-5 hours. In the formula (1), X is 0≤x≤0.5.

Abstract translation: 目的：提供一种高频陶瓷电介质的组成，其电容率超过ε30，介电损耗小，烧结温度低，降低了生产成本，其TCF可在有效范围内调节。 构成：式（1）的组合物通过以下步骤制造。 作为原料的CaCO 3，Li 2 CO 3，Nb 2 O 5和TiO 2在600℃下干燥10小时。 根据各种组成比混合材料，然后在大气中在850℃下煅烧约2小时。 将材料研磨成粉末后，将5％的PVA溶液加入粉末中制成圆柱形样品。 将样品在600℃加热约1小时以除去有机粘合剂。 样品在1000和1300℃之间烧结1-5小时。 式（1）中，X为0≤x≤0.5。

公开(公告)号：KR100307886B1

公开(公告)日：2001-09-24

申请号：KR1019990040271

申请日：1999-09-18

Applicant: 한국과학기술연구원

Inventor： 김현재 ,  정형진 ,  윤석진 ,  최지원 ,  박용욱 ,  강종윤

IPC: C04B35/465 ,  H01B3/12

Abstract: 조성식 Ca[(LiNb)Ti]O(x는 0≤x≤0.5)로표시되는고주파용유전체세라믹스조성물이제공된다. 이조성물은높은품질계수와유전율을가지며, 공진주파수의온도계수(TCF)가안정하면서조성의변화에따라 TCF를 0 ppm/℃까지조절이가능하여고주파용유전체세라믹스부품의재료로서사용될수 있을뿐만아니라, 소결온도가낮고, 소결시간도짧아양산시생산단가절감에유리한재료이다.