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Degree:Doctoral Degree in Engineering
School/Department:College of Material Science and Technology

郑勇

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Gender:Male

Education Level:华中科技大学

Paper Publications

(1–x)Li 1.0125 MgPO 4 –xBa 3 (VO 4 ) 2 复相陶瓷的制备及其微波介电性能
Date of Publication:2019-01-21 Hits:

Affiliation of Author(s):材料科学与技术学院
Journal:硅酸盐学报
Key Words:磷酸锂镁;钒酸钡;复相陶瓷;微波介电性能;
Abstract:采用固相烧结法制备(1–x)Li1.0125MgPO4–xBa3(VO4)2复相陶瓷,研究了Ba3(VO4)2掺杂对复相陶瓷相组成、烧结特性、显微组织和微波介电性能的影响。结果表明:(1–x)Li1.0125MgPO4–xBa3(VO4)2陶瓷中仅存在Li1.0125MgPO4和Ba3(VO4)2相。Ba3(VO4)2的添加能明显降低Li1.0125MgPO4陶瓷的烧结温度。随着Ba3(VO4)2含量的增加,复相陶瓷的相对介电常数εr逐渐增大,品质因子Q×f逐渐减小,谐振频率温度系数τf由负值逐渐变为正值。通过调节x值,可获得近零的τf值。0.5Li1.0125MgPO4–0.5Ba3(VO4)2复相陶瓷经875℃烧结2h后具有最佳微波介电性能,即εr=9.72,Q×f=57347GHz,τf=-1.9×10-6/℃,是一种极具潜力的低温共烧介质材料。
Translation or Not:no
Date of Publication:2019-01-21
Co-author:张梦迪,,lvxuepeng
Correspondence Author:zy
Date of Publication:2019-01-21