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以OP-10-SDS/正丁醇/环己烷/水四元复配微乳液体系为反应介质、以KBH4为还原剂,在50℃还原氯化镍和硝酸铈制备了超细Ni-Ce-B非晶态合金,利用TEM、SEM、TG-DSC、XRD等手段对产物的形貌、结构、热稳定性和晶化性质进行了研究,并通过改变水相的组成来考察水核大小对合成产物平均粒径的影响。结果表明:在微乳液中可得到平均粒径30nm左右的超细Ni-Ce-B非晶态合金,其颗粒大小均匀,分散性良好;超细Ni-Ce-B非晶态合金的平均粒径随着w值(水和复配表面活性剂的摩尔比)及水核半径的增大而增大;超细Ni-Ce-B非晶态合金的晶化温度较Ni-B非晶态合金的晶化温度升高了近360℃。
Using ultrafine Ni-Ce (OP-10-SDS / n-butanol / cyclohexane / water quaternary complex microemulsion system as the reaction medium and KBH4 as the reductant and reducing nickel chloride and cerium nitrate at 50 ℃) B amorphous alloy were investigated by means of TEM, SEM, TG-DSC and XRD. The morphology, structure, thermal stability and crystallization properties of the amorphous alloy were studied. The water core size Effect on the average particle size of the synthesized product. The results show that the ultrafine Ni-Ce-B amorphous alloy with the average particle diameter of about 30nm can be obtained in the microemulsion with uniform particle size and good dispersion. The average particle size of the ultrafine Ni-Ce-B amorphous alloy Diameter increased with the increase of w (molar ratio of water to complex surfactant) and water core radius. The crystallization temperature of the ultrafine Ni-Ce-B amorphous alloy was higher than that of Ni-B amorphous The crystallization temperature of the alloy increased nearly 360 ℃.