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以ＮｉＳＯ４·６Ｈ２Ｏ为原料，Ｎ２Ｈ４·Ｈ２Ｏ为还原剂，ＮａＯＨ调节溶液的ｐＨ值，控制反应条件为：Ｎｉ２＋的浓度１．０ｍｏｌ·Ｌ－１；Ｎ２Ｈ４·Ｈ２Ｏ／Ｎｉ２＋为２．０；ＮａＯＨ／Ｎｉ２＋为１．０；反应温度为９０℃，将得到的沉淀物洗涤、干燥，得到了平均粒度为６２ｎｍ的超细镍粉。考察了反应条件对还原反应的影响，并对制备的粉末采用ＴＥＭ、ＸＲＤ、ＩＡＳ及ＢＥＴ法进行了表征。结果表明：本法制备的镍粉具有粒度小、分布均匀、纯度高等特点。ＮａＯＨ的加入量对镍粉的纯度有影响。
NiSO4 · 6H2O as raw material, N2H4 · H2O as a reducing agent, NaOH to adjust the solution pH, the control reaction conditions: Ni2 concentration of 1.0mol·L-1; N2H4 · H2O / Ni2 + 2.0; NaOH / Ni2 + Was 1.0; the reaction temperature was 90 ° C, the resulting precipitate was washed and dried to obtain an ultrafine nickel powder having an average particle size of 62 nm. The effects of reaction conditions on the reduction reaction were investigated. The prepared powders were characterized by TEM, XRD, IAS and BET methods. The results show that the nickel powder prepared by the method has the advantages of small particle size, uniform distribution and high purity. The amount of NaOH on the purity of nickel powder have an impact.