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Composite tantalate microwave dielectric ceramic with near-zero frequency temperature coefficient
The invention discloses a composite tantalate microwave dielectric ceramic with a near-zero frequency temperature coefficient. The chemical formula of the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is 0.38ZnZrTa2O8+0.62TiO2. The composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is prepared by weighing and matching chemical ram materials ZnO, ZrO2, TiO2 and Ta2O5, performing ball milling, drying and screening, pre-sintering the mixture at 1,000 to 1,100 DEG C, and combining the pre-sintered mixture into a clinker; performing secondary ball milling, drying, screening and pressing to mould a blank; sintering the blank at 1,250 to 1,350 DEG C; preserving the temperature for 2 to 6 hours, thus preparing the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient. The composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is a microwave dielectric material with a middle-and-high dielectric constant (50 to 55); the quality factor is higher than 20,000 GHz; the process is simple and pollution-free; the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient has a wide application prospect.
Composite tantalate microwave dielectric ceramic with near-zero frequency temperature coefficient
The invention discloses a composite tantalate microwave dielectric ceramic with a near-zero frequency temperature coefficient. The chemical formula of the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is 0.38ZnZrTa2O8+0.62TiO2. The composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is prepared by weighing and matching chemical ram materials ZnO, ZrO2, TiO2 and Ta2O5, performing ball milling, drying and screening, pre-sintering the mixture at 1,000 to 1,100 DEG C, and combining the pre-sintered mixture into a clinker; performing secondary ball milling, drying, screening and pressing to mould a blank; sintering the blank at 1,250 to 1,350 DEG C; preserving the temperature for 2 to 6 hours, thus preparing the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient. The composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient is a microwave dielectric material with a middle-and-high dielectric constant (50 to 55); the quality factor is higher than 20,000 GHz; the process is simple and pollution-free; the composite tantalate microwave dielectric ceramic with the near-zero frequency temperature coefficient has a wide application prospect.
Composite tantalate microwave dielectric ceramic with near-zero frequency temperature coefficient
LI LINGXIA (author) / LYU XIAOSONG (author) / SUN HAO (author) / YE JING (author) / LI SAI (author) / ZHANG SHUAI (author)
2015-11-18
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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