高性能磁流变液悬浮相表面改性的研究

摘要

Electroless nickel and nitriding on the surface of iron powder in suspended phase can improve the property of magnetorheological fluid.The antioxidation of iron powder is improved through the electroless nickel and nitriding by SEM,TG,XRD and magnetization characteristic,Fe4N is formed on the surface of iron powder through the nitriding.The wear resistance of magnetorheological fluid is improved through nitriding by friction performance analysis.%对悬浮相铁粉的表面进行镀镍和渗氮,从而改善磁流变液的性能。通过扫描电镜分析、热重分析、XRD分析、磁化特性分析,发现镀镍和渗氮可以提高铁粉的抗氧化性,渗氮后粒子表面形成1层Fe4N。摩擦性能的分析表明渗氮后提高了磁流变液的耐磨性。