Flake tantalum powder for manufacturing electrolytic capacitors
来源期刊：Rare Metals2008年第1期
论文作者：HE Jilina,b,YANG Guoqib,PAN Luntaoa,b,LIU Hongdonga,b,and BAO Xifangb a National Special Metal Materials Engineering Research Center of Tantalum and Niobium,Ningxia ,China b Ningxia Orient Tantalum Industry Co.Ltd.(OTIC),Ningxia ,China
文章页码：22 - 26
摘 要：The FTP200 flake tantalum powder was introduced.The microstructures of the powder with leaf-like primary particles having an average flakiness of 2 to 20 and porous agglomerated particles were observed.The chemical composition,physical properties,and electrical properties of the FTP200 powder were compared with those of the FTW300 nodular powder.The FTP200 powder is more sinter-resistant,and the surface area of the flake tantalum powder under sintering at high temperature has less loss than that of the nodular tantalum powder.The specific capacitance of the flake tantalum powder is higher than that of the nodular tantalum powder with the same surface area when anodized at high voltage.Thus,the flake tantalum powder is suitable for manufacturing tantalum solid electrolytic capacitors in the range of median and high（20-63 V） voltages.
HE Jilina,b,YANG Guoqib,PAN Luntaoa,b,LIU Hongdonga,b,and BAO Xifangb a National Special Metal Materials Engineering Research Center of Tantalum and Niobium,Ningxia 753000,China b Ningxia Orient Tantalum Industry Co.Ltd.(OTIC),Ningxia 753000,China
摘 要：The FTP200 flake tantalum powder was introduced.The microstructures of the powder with leaf-like primary particles having an average flakiness of 2 to 20 and porous agglomerated particles were observed.The chemical composition,physical properties,and electrical properties of the FTP200 powder were compared with those of the FTW300 nodular powder.The FTP200 powder is more sinter-resistant,and the surface area of the flake tantalum powder under sintering at high temperature has less loss than that of the nodular tantalum powder.The specific capacitance of the flake tantalum powder is higher than that of the nodular tantalum powder with the same surface area when anodized at high voltage.Thus,the flake tantalum powder is suitable for manufacturing tantalum solid electrolytic capacitors in the range of median and high（20-63 V） voltages.
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