- 专利标题： MODIFIED NI-TI-TA DIELECTRIC MATERIAL FOR MULTI-LAYER CERAMIC CAPACITOR AND LOW-TEMPERATURE PREPARATION METHOD THEREOF
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申请号： US18140424申请日： 2023-04-27
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公开(公告)号： US20230352239A1公开(公告)日： 2023-11-02
- 发明人: YuanYuan Yang , XiaoZhen Li , MengJiang Xing , YanLing Luo , HongYu Yang , QingYang Fan , Hao Li , YunSheng Zhao
- 申请人： Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China
- 申请人地址： CN Huzhou
- 专利权人： Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China
- 当前专利权人： Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China
- 当前专利权人地址： CN Huzhou
- 优先权： CN 2210472444.X 2022.04.29
- 主分类号： C04B35/626
- IPC分类号： C04B35/626 ; C04B35/64 ; H01G4/12 ; H01G4/30
摘要：
A modified Ni—Ti—Ta dielectric material for multi-layer ceramic capacitor (MLCC) and a low-temperature preparation method thereof are provided. By using characteristics that radii of the Cu2+ ion and (Al½Nb½)4+ ion are close to those of Ni and Ti elements, respectively, Cu2+, Al3+ and Nb5+ ions are introduced into a Ni0.5Ti0.5TaO4 matrix for partial substitution, a negative temperature coefficient of dielectric constant of -220±30 ppm/°C is provided while a sintering temperature is significantly reduced, and deterioration factors of loss caused by sintering aids is reduced, so that the dielectric material applied to radio frequency MLCC with low loss, low cost and good process stability is prepared.
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