Preparation of Core-Shell BaTiO3 Particles Coated with MgO

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Chang-Sam Kim²  Jae-Nam Kim³  Guang-Jin Choi³  Tae-Suk Byun³  Young-Jung Kim¹ 

[1] Deptartment of Materials System Engineering, Sunmoon University;Multifunctional Ceramics Research Center, KIST;Deptartment of Chemical Engineering, Inje University

关键词: Magnesium Oxide;    Barium Titanate;    Powder Coating;    MLCC;    Core-Shell Structure;   

DOI  :  10.1252/jcej.38.553

来源: Maruzen Company Ltd

【 摘 要 】

References(12)Cited-By(4)MgO is a well-known additive to BaTiO3 powder for MLCC application. A nano-coating process was investigated to produce an MgO shell layer onto BaTiO3 core powder. Several deposition reaction routes were examined to find out that a magnesium nitrate-urea system worked very well, if not the best. The solution-state reaction gave Mg5(CO3)4(OH)2·4H2O as confirmed by XRD, which later turned to MgO upon calcination at 600°C. The core-shell morphology was characterized using SEM and TEM whereas the composition of the shell layer was determined via ICP-AES and XRF. The composition of the MgO shell layer was rather easily controlled by adjusting initial amounts of reactants.

【 授权许可】

Unknown