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    • 6. 发明授权
    • Method for producing fine metal powder
    • 金属粉末生产方法
    • US07470306B2
    • 2008-12-30
    • US10517821
    • 2003-06-11
    • Shinji InazawaMasatoshi MajimaKeiji KoyamaYoshie Tani
    • Shinji InazawaMasatoshi MajimaKeiji KoyamaYoshie Tani
    • B22F9/24
    • B22F9/24B22F2998/00B22F2998/10C25C5/02B22F1/0018
    • An object of the present invention is to provide a new method for producing a fine metal powder, in which high purity fine metal powders which are more minute than ever before, are uniform in particle diameter, and contain no impurities can be produced at lower cost, in larger amounts, and in safety, characterized by subjecting a solution containing tetravalent titanium ions and having a pH of not more than 7 to cathode electrolytic treatment to reduce parts of the tetravalent titanium ions to trivalent titanium ions, to prepare a reducing agent solution containing both the trivalent titanium ions and the tetravalent titanium ions, and adding a water-soluble compound of at least one type of metal element forming the fine metal powder to the reducing agent solution, followed by mixing, to reduce and deposit ions of the metal element by the reducing action at the time of oxidation of the trivalent titanium ions to the tetravalent titanium ions, to produce the fine metal powder.
    • 本发明的目的在于提供一种新型的金属粉末的制造方法,其中比以往更细的粒径均匀且不含杂质的高纯度细金属粉末可以以较低的成本制造 以更大量的安全性,其特征在于使含有四价钛离子并且pH不大于7的溶液经阴极电解处理以将四价钛离子的一部分还原为三价钛离子,从而制备还原剂溶液 含有三价钛离子和四价钛离子,并将形成细金属粉末的至少一种金属元素的水溶性化合物加入到还原剂溶液中,然后混合,以还原和沉积金属离子 元素,通过在三价钛离子氧化成四价钛离子时的还原作用,生成细金属粉末。