FeCr纳米合金粉的制备及性能

本文采用电爆炸法制备了FeCr纳米合金粉，对不同放电电压和金属丝丝径对粉体粒径及其分布的影响进行了探究。结果表明，在其他工艺参数不变的前提下，随着放电电压的增大、金属丝丝径的降低，纳米粉体粒径逐渐降低，粒径分布逐渐变窄。根据影响规律，对较优实验条件下制得的FeCr纳米合金粉进行性能表征，粉体呈光滑球形，粒径大小基本处于100nm以下，平均粒径仅为57.87nm，其Fe、Cr、O含量与FeCr合金丝基本相同，物相结构主要为Fe-Cr合金相。

Study on Preparation and properties of FeCr Nano Alloy Powder

In this paper, FeCr nano alloy powder was prepared by electric explosion, and the influence of different discharge voltage and wire diameter on the particle size and distribution of the powder was investigated. The results show that with the increase of discharge voltage and the decrease of wire diameter, the particle size of nano powder decreases and the particle size distribution narrows gradually under the premise that other process parameters remain unchanged. According to the influence law, the properties of FeCr nano alloy powder prepared under the optimal experimental conditions were characterized. The powder was smooth and spherical, the particle size was basically below 100nm, and the average particle size was only 57.87nm. The content of Fe, Cr, O was basically the same as that of FeCr alloy wire, and the phase structure was mainly Fe-Cr alloy phase.