Samsung Electro-mechanics Co., Ltd.

Samsung Fine Chemicals Co., Ltd.

Jai Joon Lee

Kang Heon Hur

Jong Han Kim

Woo Young Yang

Yun Jung Park

Jun Hee Lee

Sung Bum Sohn

Keon Il Kim

Hyun Chul Jeong

Seon Cheol Park

Jae Chul Jung

Disclosed herein is a conductive paste composition. The conductive paste composition according to the exemplary embodiment of the present invention includes a conductive powder including nickel or a nickel alloy; a spherical particulate inhibitor including BaTiOpowders; and a glass composition having Chemical Formula of aLiO-bKO-cCaO-dBaO-eBO-fSiO, wherein a, b, c, d, e, and f satisfy a+b+c+d+e+f=100, 2&#x2266;a&#x2266;10, 2&#x2266;b&#x2266;10, 0&#x2266;c&#x2266;25, 0&#x2266;d&#x2266;25, 5&#x2266;e&#x2266;20, and 50&#x2266;f&#x2266;80.

Conductive paste composition and method for producing multilayer ceramic capacitor using the same

The present invention relates to a method for preparing barium titanate based powder. More particularly, the present invention provides a method for preparing barium titanate powder comprising the following steps of precipitation of barium titanyl oxalate (BaTiO(CO).4HO) with spraying a mixture of an aqueous barium chloride (BaCl.2HO) and titanium tetrachloride (TiCl) to an aqueous solution of oxalic acid, via a nozzle; wet pulverization by using a beads mill after adding an additive such as an amine; dry; pyrolysis; and re-pulverization.

Method for preparing barium-titanate based powder

Disclosed is a method for preparing barium titanate powder by oxalate synthesis, whereby barium titanate powder or doped barium titanate powder with excellent powder properties can be produced at high efficiency and with economic benefit. An aqueous solution containing barium chloride and titanium chloride or further containing at least one dopant serving as a donor or acceptor is mixed with an aqueous oxalic acid solution to afford barium titanyl oxalate (BTO) or doped-BTO as a precipitate which is then aged, washed, and dried, followed by primary calcination and pulverization and secondary calcination and pulverization.

Method for preparing barium titanate powder by oxalate synthesis

The method is carried out in the following manner: An aqueous mixture solution containing barium chloride and titanium chloride is added into an aqueous oxalic acid solution, so that barium titanyl oxalate would be precipitated. Then the precipitates are aged, washed and filtered. The filtered barium titanyl oxalate precipitates are crushed, and dried. Then a thermal decomposition is carried out to obtain a agglomerated barium titanate powder, and this is crushed again to obtain the final barium titanate powder. In order to obtain barium titanate based powder such as Ba(Ti Zr )O , (Ba Ca )(Ti Zr )O , and (Ba Ca Sr )(Ti Zr )O , the desired elements (Ca, Sr, Zr and so on) are added to barium titanyl oxalate when crushed before thermal decomposition step. After thermal decomposition and crushing, the barium titanate based powder can be obtained.

Method for producing barium titanate based powders by oxalate process

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Suwon, South Korea

Jai Joon Lee