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Low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material and preparation method thereof
The invention discloses a preparation method of a low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material, which comprises the following steps: (1) proportioning raw materials Li2CO3, MnCO3 and ammonium polyphosphate according to the molecular formula LiMnPO4, mixing by ball milling, drying, and presintering in a 600-700-DEG C air atmosphere for 3-4 hours to obtain presintered powder; and (2) adding adhesives into the presintered powder, granulating, carrying out uniaxial pressurization to prepare a green compact, and finally, sintering in a 725-775-DEG C air atmosphere for 2-3 hours to obtain the low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic. The invention also discloses the low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material prepared by the preparation method. The low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material has the advantages of simple preparation technique, clean and green raw materials, no rare-earth element, low price, environment friendliness, low dielectric constant, low loss and high quality factor.
Low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material and preparation method thereof
The invention discloses a preparation method of a low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material, which comprises the following steps: (1) proportioning raw materials Li2CO3, MnCO3 and ammonium polyphosphate according to the molecular formula LiMnPO4, mixing by ball milling, drying, and presintering in a 600-700-DEG C air atmosphere for 3-4 hours to obtain presintered powder; and (2) adding adhesives into the presintered powder, granulating, carrying out uniaxial pressurization to prepare a green compact, and finally, sintering in a 725-775-DEG C air atmosphere for 2-3 hours to obtain the low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic. The invention also discloses the low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material prepared by the preparation method. The low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material has the advantages of simple preparation technique, clean and green raw materials, no rare-earth element, low price, environment friendliness, low dielectric constant, low loss and high quality factor.
Low-temperature-sintering lithium manganese phosphate microwave dielectric ceramic material and preparation method thereof
HU XING (author) / CHENG ZIFAN (author) / LING ZHIYUAN (author)
2015-10-14
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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