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    • 9. 发明授权
    • Tantalum powders and methods of producing same
    • 钽粉及其制造方法
    • US07142408B2
    • 2006-11-28
    • US10864253
    • 2004-06-09
    • Duan-Fan Wang
    • Duan-Fan Wang
    • H01G9/00
    • H01G9/042H01G9/0525
    • Methods of forming tantalum powders and other valve metal powders are described. The method involves high impact milling a starting powder in a fluid medium and optionally a milling media using a high energy mill. The methods of the present invention have the ability to reduce DC leakage and/or increase capacitance capabilities of valve metal powders when formed into capacitor anodes. The methods of present invention further reduce the milling time necessary to form high surface area valve metal powders and leads to reducing contaminant levels in the valve metal powders. The process is particularly well-suited for forming metal flakes, such as tantalum or niobium flakes, of high purity.
    • 描述了形成钽粉末和其它阀金属粉末的方法。 该方法包括在流体介质中高效冲击起始粉末,并且任选地使用高能磨机研磨研磨介质。 当形成电容器阳极时,本发明的方法具有减小阀门金属粉末的DC泄漏和/或增加电容能力的能力。 本发明的方法进一步减少形成高表面积阀金属粉末所需的研磨时间,并导致减少阀金属粉末中的污染物水平。 该方法特别适用于形成高纯度的金属薄片,例如钽或铌薄片。