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Hydrothermal preparation and dielectric research of Ba1-xCaxTiO3 powders for MLCC insulating medium
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Hao YIN, Yunyun ZHAO, Xiuyun ZHANG, Huarui XU, Guisheng ZHU, Le WAN, Kun XU, Mingnan SHANGGUAN
Insulating Materials | 2023, 56(4) : 28 - 33
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Insulating Materials | 2023, 56(4): 28-33
• Material Research •
Hydrothermal preparation and dielectric research of Ba1-xCaxTiO3 powders for MLCC insulating medium
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Hao YIN, Yunyun ZHAO, Xiuyun ZHANG, Huarui XU, Guisheng ZHU, Le WAN, Kun XU, Mingnan SHANGGUAN
Affiliations
  • 1Electronical Information Materials and Devices Engineering Research Center of Ministry of Education, Guilin University of Electronic Technology, Guilin 541004, China
  • 2Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
  • 3School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
Published: 2023-04-20 doi: 10.16790/j.cnki.1009-9239.im.2023.04.006
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In order to improve the upper limit temperature and high temperature stability of BaTiO3 for MLCC insulating dielectric material, a Ba1-xCaxTiO3 nano-powder was prepared by using BaCl2·H2O, CaCl2, and H2TiO3 as raw materials and KOH as mineralizer under the condition of 210℃/22 h hydrothermal reaction. The phase structure, microstructure, and dielectric properties of the samples were characterized and analyzed by XRD, SEM, LCR detection methods. The results show that the obtained powders are uniformly dispersed and the particle size is (110±20) nm. The doping of Ca2+ increases the Curie temperature of BaTiO3, and a Ba0.91Ca0.09TiO3 ceramics with 136.2℃of Curie temperature, 1 882 of dielectric constant, and 0.02 of dielectric loss factor are obtained at 1 250℃/2 h. The preparation of MLCC insulating dielectric materials with small particle size, narrow distribution, low agglomeration, and high performance is realized.

calcium barium titanate  /  insulating medium  /  hydrothermal  /  dielectric properties
Hao YIN, Yunyun ZHAO, Xiuyun ZHANG, Huarui XU, Guisheng ZHU, Le WAN, Kun XU, Mingnan SHANGGUAN. Hydrothermal preparation and dielectric research of Ba1-xCaxTiO3 powders for MLCC insulating medium[J]. Insulating Materials, 2023 , 56 (4) : 28 -33 . DOI: 10.16790/j.cnki.1009-9239.im.2023.04.006
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doi: 10.16790/j.cnki.1009-9239.im.2023.04.006
  • Receive Date：2022-04-18
  • Online Date：2025-11-21
  • Published：2023-04-20
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  • Received：2022-04-18
  • Revised：2022-05-20
Funding
Affiliations
    1Electronical Information Materials and Devices Engineering Research Center of Ministry of Education, Guilin University of Electronic Technology, Guilin 541004, China
    2Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China
    3School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.04.006
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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