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The wet and a method for manufacturing a high tap density ultra-fine spherical metal nickel powder
The wet and a method for manufacturing a high tap density ultra-fine spherical metal nickel powder
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机译:湿法和高振实密度超细球形金属镍粉的制造方法
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摘要
The present invention provides a wet processes preparing method of spherical ultrafine nickel powder with high tap density. The method is comprised of using nickel sulfate to react with mixed solution of sodium hydroxide and sodium carbonate to generate nickel hydroxide and basic nickel salt, adding polyhydric alcohol as appearance controlling agent, adding yttrium salt as crystal nucleus forming agent, and using hydrazine or hydrazine hydrate as reducer in order to producing excellent spherical nickel powder with high tap density, narrow grain size distributing, strong resistoxidation, good dispersivity, and mean grain size 0.2-lµm.The invention increases the tap density of nickel powder prapared by wet processes and decreases environment pollution and production cost greatly. Nickel powder prepared by the invention is used to microelectronics laminated ceramic capacitor, powder metallurgy, magnetic material and so on.
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