【摘要】 装饰铬在全世界的市场需求量是硬铬的3倍,长期以来镀铬工艺是众所周知的有毒工艺,由于电镀纳米Sn-Co-X合金具有与Cr6+非常接近的颜色及更好的耐腐蚀性,且对环境和人体安全,是取代Cr6+与Cr3+的极好选择。纳米Sn-Co-X的耐腐蚀性优于Cr6+和Cr3+,更优于常规晶态的Sn-Co合金。用扫描电镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱仪(XPS)和原子发射光谱(AES)对纳米Sn-Co-X合金的微观结构及腐蚀前后的表层变化进行了分析,阐述了纳米Sn-Co-X合金优异的耐腐蚀性机理。更多还原

【Abstract】 Decorative chromium demand in the worldwide market is more than three times of hard chromium.However,chromium plating process has long been known to be hazardous.The corrosion resistance of nano-crystalline Sn-Co-X alloy intended as an alternative for decorative chromium has been studied.The corrosion resistance of Sn-Co-X is better than trivalent chromium and hexavalent chromium,and it is much better than coarser gained Sn-Co alloy.The microstructures of Sn-Co-X alloy were analyzed by scanning electron microscope(SEM),transmission electron microscope(TEM),X-ray photoelectron spectroscopy(XPS) and atomic emission spectrometry(AES) before and after corrosion.The mechanism of its excellent corrosion resistance was described.更多还原