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概述了超临界CO_2流体特性及其电化学沉积新方法.分析了表面活性剂、CO_2的含量和电解液的三元体系及过程参数对形成的导电乳化液及沉积层微观结构的影响规律.利用该项新技术,在制备高性能镀膜材料等方面取得了积极的进展,其镀膜平整、晶粒细小(小于100nm),显微硬度和耐磨性比普通电镀层有显著提高.最后展望了未来的发展方向.

The characteristics of CO_2 supereritieal fluids and a new electroplating method are summarized. The effects of the ternary system of a surfactant, dense CO_2 concentration and the electroplating solution on conducive emul-sion and deposit film microstructure in supercritical CO_2 electroplating are analyzed including process parameters. The remarkable progress of the high-performance films produced in supercritical fluids electroplating is presented, which has a higher uniformity, a smaller grain size(sub-100nm), a significantly micro-hardness and wear resistance compared with electroplating from the only solution. At last, the potential developments of this technology in the future are ex-pected.

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