以次磷酸镍为原料制备NiP和NiPB非晶态合金的新方法

New Method of Preparing NiP and NiPB Amorphous Alloys Using Nickel Hypophosphite as Reactant

以次磷酸镍为原料用化学还原法制备出了NiP和NiPB非晶态合金.用ICP、XRD和TEM等方法对催化剂物性进行了表征.研究了制备条件,如原料浓度、温度、PH值及引发剂的加入对制备NiP非晶态合金的影响.在300K下所制备的NiP非晶态合金平均粒径约为30nm.研究了原料浓度与原料配比对NiPB非晶态合金物性的影响,可通过改变原料浓度和配比得到所需组成的NiPB非晶态合金.NiPB非晶合金平均粒径约为15nm.

NiP and NiPB amorphous alloys were prepared by chemical reduction method using nickel hy-pophosphite as reactant. Their physical properties were characterized by ICP, XRD and TEM . The effect of preparation conditions such as temperature, pH value, concentration of the reactants and additives on the yield and composition of NiP amorphous alloy was studied. The NiP amorphous alloy particle was found to be spherical and its average particle size was about 30 nm at 300 K. The effect of the concentration and mole ratio of the reactants on the composition of NiPB amorphous alloy was also studied. The average particle size of NiPB amorphous alloy (sample 5)was about 15 nm. It was convenient to obtain NiPB amorphous alloy with expected composition by changing the initial concentration and the mole ratio of the reactants.