METHOD FOR PREPARING TANTALUM POWDER FOR HIGH-RELIABILITY, HIGH SPECIFIC CAPACITY ELECTROLYTIC CAPACITOR

WIPO Patent Application WO/2015/124094

A1

A method for preparing a tantalum powder for a high-reliability, high specific capacity electrolytic capacitor, wherein the ratio of the mean particle size of raw material tantalum powder to the mean particle size of flaky tantalum powder is 0.5-25, preferably 1.5-10, and more preferably 2-5. The preparation method of the present invention has a simple process and strong controllability. The obtained flaky tantalum powder has a lower content of metallic impurities, a higher specific surface area, a good fluidity and formability after conglomeration, a higher specific capacity, and a lower leakage current and a higher breakdown voltage when used under a higher voltage.

WO/2002/030595	PROCESS FOR PRODUCING, THROUGH STRIP CASTING, RAW ALLOY FOR NANOCOMPOSITE TYPE PERMANENT MAGNET
JP2008214747	R-T-B ALLOY, METHOD FOR PRODUCING THE SAME, FINE POWDER FOR R-T-B RARE EARTH PERMANENT MAGNET, AND R-T-B RARE EARTH PERMANENT MAGNET
JP6691825	A method for manufacturing a negative electrode of a nickel-metal hydride secondary battery and a device for manufacturing a negative electrode of a nickel-metal hydride secondary battery.

LI ZHONGXIANG (CN)
CHENG YUEWEI (CN)
SHI DEJUN (CN)
DONG XUECHENG (CN)
WANG TING (CN)
WANG ZHIDAO (CN)
WEI JUNXIANG (CN)

PCT/CN2015/073090

August 27, 2015

February 15, 2015

Click for automatic bibliography generation  

NINGXIA ORIENT TANTALUM IND CO (CN)

B22F9/04; B22F1/068; B22F1/142; B22F1/145; B22F1/148

CN1899730A	2007-01-24
CN101010160A	2007-08-01
CN101491834A	2009-07-29
CN102719720A	2012-10-10
US5211741A	1993-05-18

See also references of EP 3095540A4

CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
中国国际贸易促进委员会专利商标事务所 (CN)

View/Download PDF      PDF Help

Previous Patent: HIGH AIR-TIGHTNESS DEVICE

Next Patent: INFORMATION RELEASE METHOD, APPARATUS, AND SYSTEM