NiCoFe合金代铬镀层的电镀工艺(精选).doc

目录 摘要 1 一 Ni-Co-Fe合金代铬镀层 3 2 电流密度，PH値以及温度对工艺的影响 5 3 阴极电位对工艺的影响 6 4 热处理对工艺的影响 6 5 稀土添加剂对工艺的影响 7 三 Ni-Co-Fe合金代铬 7 1 Ni-Co-Fe合金纳米线有序阵列的模板合成与磁性 7 2 电沉积纳米晶Ni-Co-Fe合金镀层的热稳定性 7 总结 9 参考文献 9 摘要 由于铬镀层具有光亮、防变色，在大气环境下稳定性和光泽的持久性等独特的优良性能，而获得了广泛的应用。然而镀铬均镀性较差，电流密度高，电流效率低，能耗高，同时，铬雾和含铬废水排放严重污染环境和水源，危害人体健康。因而致力于开发代铬镀层，先后开发了电镀Sn- CO 、CO- B、Ni- CO- Tl- B等合金镀层以及化学镀Ni- MO- P、Ni- Cu- P、Ni-Sn- P、CO- W- P、Ni- W- P 等合金镀层，但是这些合金镀层的综合性能不能满足取代铬镀层的要求。鉴于上述状况，本文就可以取代铬镀层的电镀Ni- Fe- C合金工艺的优点，镀层性能，工业现状，研究现状，发展方向等加以叙述。从而使我们对电镀Ni- Fe- CO各个方面有一个全新的认识。本文着重介绍Ni-Co-Fe合金代铬Abstract As with bright chrome plating, anti-discoloration, under atmospheric conditions, stability and durability and other unique luster excellent performance, and access to a wide range of applications. However, poor chrome-plated, high current density, low current efficiency, high energy consumption, while chromium and chromium-containing wastewater discharge fog serious pollution of the environment and water and endanger human health. Therefore committed to the development on behalf of chrome plating.Has developed a plating Sn-CO, CO-B, Ni-CO-Tl-B alloy plating and electroless plating, etc. Ni-MO-P, Ni-Cu-P, Ni-Sn-P, CO-W-P, Ni - W-P alloy coating, etc., but the overall performance of the alloy coating can not satisfy the requirements substituted chromium plating. Given the above situation, this article can replace chrome plating electroplating Ni-Fe-CO Alloy advantages of coating performance, industry status quo, research status and development direction to be described. So that we have a new understanding in electroplating Ni-Fe-CO from all its aspects..we will focus on introduce the production technology and latest investigation of Ni-Fe-CO . 一 Ni-Co-Fe合金代铬镀层Ni-Co-Fe合金代铬镀层，在很大层度上改善了镀层的色泽，得到了与铬镀层极为相似的合金镀层，且镀层经热处理后其硬度与铬相当，。本发明Ni-Co-Fe合金代铬镀层的电镀液能在铁件和锌合金等基材上电镀得到暗青亮致密的镍钴铁合金镀层，镀层表面无微裂纹，具有很好的耐蚀性和耐磨性，基体结合力良好。镀液浓度低，带出量少，整个电镀工艺过程实现清洁生产，符合环保和可持续性生产的要求，且操作简单，适于推广。Ni-Co-Fe合金代铬镀层Ni-Fe-CO 合金镀层既可保持电镀金属镍镀层光亮性好、机械性能优良和化学性质稳定的优点，还可以使镀层的硬度和耐磨性