Co-Ti-Ta-based dielectric ceramic material and preparation method thereof
A technology of co-ti-ta and dielectric ceramics, which is applied in the field of electronic ceramics and its manufacturing, can solve the problems of poor sintering temperature parameters of Trirutile phase microwave dielectric ceramics, etc.
Active Publication Date: 2019-03-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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[0004] In view of the above existing problems or deficiencies, in order to solve the problem of poor sintering temperature and parameter performance of existing Trirutile phase microwave dielectric ceramics, the present invention provides a Co-Ti-Ta based dielectric ceramic material and its preparation method
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[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0014] Step 1, the Co 2 o 3 、TiO 2 and Ta 2 o 5 The raw powder according to the general chemical formula Co 0.5 Ti 0.5 TaO 4 ingredients.
[0015] Step 2. Add the powder obtained in step 1 into a nylon tank according to the mass ratio of powder: zirconia ball: deionized water 1:4:3, mix with a planetary ball mill for 6 hours, take it out and dry it at 100°C to Sieve through a 200-mesh sieve, and then pre-fire in the atmosphere at 1000°C for 4 hours to synthesize the main crystal phase Co 0.5 Ti 0.5 TaO 4 .
[0016] Step 3. Add the powder obtained after pre-calcining in step 2 into the nylon tank according to the mass ratio of powder: zirconia ball: deionized water 1:5:1, mix it with a planetary ball mill for 4 hours, take it out and bake it at 100°C After drying, add PVA solution with a mass percentage of 4% as a binder to granulat...
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Abstract
The invention belongs to the fields of electronic ceramics and production thereof and particularly relates to a Co-Ti-Ta-based dielectric ceramic material and a preparation method thereof. The Co-Ti-Ta-based dielectric ceramic material provided by the invention is a Co0.5Ti0.5TaO4 microwave dielectric ceramic material which is of a Trirutile phase crystal structure, and has the characteristics ofpre-burning temperature of 800 to 1100 DEG C, relatively low sintering temperature of 1000 to 1100 DEG C, moderate dielectric constant (36 to 41) and loss as low as 4.3*10<-4>. The Co-Ti-Ta-based dielectric ceramic material comprises the following raw materials: Co2O3, TiO2 and Ta2O5; a chemical formula is Co0.5Ti0.5TaO4; and the Co-Ti-Ta-based dielectric ceramic material is prepared by adopting asolid phase method. The material disclosed by the invention has high dielectric constant and low sintering temperature; in addition, the preparation method is simple and is easily applied to industrial production.
Description
technical field [0001] The invention belongs to the field of electronic ceramics and its manufacture, and in particular relates to a Co-Ti-Ta-based dielectric ceramic material and a preparation method thereof. The material structure is a Trirutile phase. Background technique [0002] With the rapid development of electronic communication, the importance of microwave communication (mainly UHF, SHF frequency band, 300MHz ~ 300GHz) in the field of modern communication transmission is becoming more and more significant, and it has achieved a wide range of applications in the fields of mobile, radio and television, satellite communication and military radar. develop. Therefore, the demand for microwave components such as resonators, filters, dielectric antennas, and dielectric waveguide loops is also increasing. Due to the excessive volume and weight of metal resonators and metal waveguides, the development of microwave integrated circuits is limited, and microwave hybrid integr...
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IPC IPC(8): C04B35/495C04B35/622
CPCC04B35/495C04B35/622C04B2235/3275C04B2235/3232C04B2235/786C04B2235/96C04B2235/6567C04B2235/3253
Inventor 李恩竹杨鸿宇杨鸿程陈亚伟钟朝位张树人
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA