WO2014077176A3 - 被覆チタン酸バリウム微粒子及びその製造方法 - Google Patents

被覆チタン酸バリウム微粒子及びその製造方法 Download PDF

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Publication number
WO2014077176A3
WO2014077176A3 PCT/JP2013/080078 JP2013080078W WO2014077176A3 WO 2014077176 A3 WO2014077176 A3 WO 2014077176A3 JP 2013080078 W JP2013080078 W JP 2013080078W WO 2014077176 A3 WO2014077176 A3 WO 2014077176A3
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Prior art keywords
barium titanate
inclusive
titanate particulate
particulate
aqueous solution
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PCT/JP2013/080078
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English (en)
French (fr)
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WO2014077176A2 (ja
Inventor
秀彦 飯沼
守谷　好美
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関東電化工業株式会社
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Application filed by 関東電化工業株式会社 filed Critical 関東電化工業株式会社
Priority to JP2014546952A priority Critical patent/JP6368246B2/ja
Priority to US14/441,888 priority patent/US9478356B2/en
Priority to CN201380059415.XA priority patent/CN104797531B/zh
Priority to KR1020157014308A priority patent/KR102020702B1/ko
Publication of WO2014077176A2 publication Critical patent/WO2014077176A2/ja
Publication of WO2014077176A3 publication Critical patent/WO2014077176A3/ja

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
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Abstract

積層セラミックスコンデンサ等で用いるための、高温焼成時のグレイン成長が抑制された、表面被覆チタン酸バリウム微粒子及びその製造方法の提供。水熱反応により得られるチタン酸バリウム微粒子であって、平均粒子径10nm以上1000nm未満、Ba/Ti比0.80以上1.20以下、c/a比1.001以上1.010以下であり、Mg、Ca、Ba、Mnおよび希土類元素の群から選択される少なくとも１種類の金属の化合物を含む被覆層を表面に有することを特徴とする被覆チタン酸バリウム微粒子。本発明の被覆チタン酸バリウム微粒子は、（１）バリウム水酸化物を含む水溶液とチタン水酸化物を含む水溶液とを、Ba/Ti比が0.80以上1.20以下となる割合で混合し、温度200℃以上450℃以下、圧力2.0MPa以上50MPa以下、反応時間0.1分以上１時間以下で水熱反応させてチタン酸バリウム微粒子を得る工程、（２）当該チタン酸バリウム微粒子を水溶液中に均一に分散させる工程、（３）当該チタン酸バリウム微粒子の表面に金属化合物を被覆する工程、を含む方法で製造される。
PCT/JP2013/080078 2012-11-13 2013-11-07 被覆チタン酸バリウム微粒子及びその製造方法 WO2014077176A2 (ja)

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US14/441,888 US9478356B2 (en) 2012-11-13 2013-11-07 Coated barium titanate particulate and production method for same
CN201380059415.XA CN104797531B (zh) 2012-11-13 2013-11-07 包覆钛酸钡细颗粒及其制造方法
KR1020157014308A KR102020702B1 (ko) 2012-11-13 2013-11-07 피복 티탄산바륨 미립자 및 그 제조 방법

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WO2014077176A2 (ja) 2014-05-22
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US20150270067A1 (en) 2015-09-24
JPWO2014077176A1 (ja) 2017-01-05
US9478356B2 (en) 2016-10-25
CN104797531A (zh) 2015-07-22
KR102020702B1 (ko) 2019-09-10
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