Crystallization kinetics of ultrafine Co74.4B25.6 amorphous powder prepared by chemical reduction

Preparation and magnetic properties of amorphous Co–Cu–B alloy nano-powders

“…4 is the DSC plots for samples S6, S7 and S8 taken at a heating rate of 20 K/min. It is noted that no distinguished glass transition was identified on these curves, which is in agreement with the previous results [8,9] that the samples were also prepared by chemical reduction. All these curves have a single exothermic peak, which further confirms that these three samples were indeed amorphous, and suggests that their crystallization occurred in a single-stage process corresponding to the simultaneous precipitation of crystalline phases.…”

Hydrogenation of p-chloronitrobenzene on Mo, La, Fe, and W-modified NiCoB nanoalloy catalysts

“…TEM results confirmed that the particle size of these catalysts was very small, especially for the modified NiCoB catalysts. It has been reported that the amorphous nano-sized catalysts have many intrinsic properties such as short-range order, long-range disorder, and more defect sites [21][22][23][24][25][26]. These properties favored their catalytic properties.…”

Preparation and magnetic properties of amorphous Co–Zr–B alloy nano-powders

“…6 observation, we know that the thermal stability of Co-Zr-B amorphous powder rests with Co-based Zr-containing amorphous particles. It has been found that the addition of Zr element to the Co-B alloy system increases the crystallization peak temperature up to 771.3 K compared to the Co 74.4 B 25.6 amorphous powders prepared by chemical reduction, for which the one and only crystallization peak temperature is 737.7 K [28]. An amorphous alloy can be regarded as a kind of supercooled liquid.…”