Phase evolution and dielectric properties of MgTi2O5 ceramic sintered with lithium borosilicate glass

被引:56
作者
Shin, H
Shin, HK
Jung, HS
Cho, SY
Hong, KS [1 ]
机构
[1] Seoul Natl Univ, Sch Mat Sci & Engn, Seoul 151744, South Korea
[2] Kangnung Natl Univ, Dept Ceram Engn, Kangnung 210702, South Korea
[3] Samsung Corning Precis Glass, Asan 336840, Chungnam, South Korea
关键词
ceramics; glasses; dielectric properties;
D O I
10.1016/j.materresbull.2005.04.025
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Phase evolution, densification, and dielectric properties of MgTi2O5 dielectric ceramic, sintered with lithium borosilicate (LBS) glass, were studied. Reaction between LBS glass and MgTi2O5 was significant in forming secondary phases such as TiO2 and (Mg,Ti)(2)(BO3)O. The glass addition was not necessarily deleterious to the dielectric properties due to the formation of TiO2: permittivity increased and temperature coefficient of resonance frequency could be tuned to zero with the addition of LBS glass, although the inevitable glass-induced decrease of quality factor was not retarded by the formation of TiO2. The sintered specimen with 10 wt% LBS fired at 950 degrees C for 2 h showed permittivity of 19.3, quality factor of 6800 GHz, and tau(f) of - 16 ppm/degrees C. (C) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2021 / 2028
页数:8
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