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铁族锌基合金异常共沉积机物研究进展 总被引:3,自引:0,他引:3
概述了铁族锌基合金异常共沉积机理的研究现状与发展概况。对铁族锌基合金异常共沉积机理发展的历史过程进行了回顾,对几种主要机理进行了论述及评价,并介绍了近年来出现的几种新观点。 相似文献
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The effects of pulse parameters on the cobalt content, surface morphologies and grain size of Zn-Co alloy deposits were studied using a pulse plating technique with a square-wave current containing reverse pulse. Average current density and reverse anodic current density amongst the variables investigated have very strong effects on the cobalt content in the Zn-Co alloy deposits. Grain size, surface appearance and internal stress in the deposit were improved significantly by introducing the reverse current. Varieties of Zn-Co alloy compositionally modulated multilayer (CMM) coatings with large differences in cobalt contents for different sublayers were electrodeposited by designing corresponding waveforms using a computer-aided pulse plater and characterized in terms of surface morphologies. Cross-sectional morphologies of the Zn-Co alloy CMM coatings, examined using field emission gun scanning electron microscopy (FEGSEM), confirmed the layered structure. 相似文献
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电镀锌基合金工艺的发展及应用 总被引:11,自引:0,他引:11
综述了锌与铁族金属形成的二元合金铁电镀艺及应用情况,其中主要对锌-镍、锌-钴、锌-铁合金电镀工艺方法和特点作了较详细的论述。 相似文献
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近年来,锌基合金在国内模具制造行业应用日趋广泛.锌基合金的机械性能和铸造性能均佳,采用少无切屑的加工方法,可以制型腔复杂的各种模具.其制造周期短、成本低.而且旧模还可重熔回用.因而它广泛地应用于制造冲裁拉延模,也用于制造塑料成型模.随着锌基合金的推广应用,对模具寿命和表面质量,提出了更高的要求,而满足这种要求的重要途径就是电镀.据资料报导,美国及一些欧洲国家,近年来开展了该课题的研究,在该基体上直接 相似文献
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