为了探索镀液组分对Ni-W-P合金镀层结构与性能的影响规律,寻求合适的镀液配比,为后续实验奠定基础,采用扫描电镜/能谱、X射线衍射以及金相分析等方法,研究了不同成分和结构的化学沉积Ni-W-P合金层,测量了不同成分沉积层的镀态与热处理后的硬度.结果表明:对于Ni-W-P合金镀层,镀液组分是决定镀层结构状态的关键因素.镀液中钨酸钠含量增加,次磷酸钠含量减少时,镀层结构将发生由非晶态→混晶态→纳米晶态的连续演变,其相应的镀态硬度与热处理后硬度也发生变化,这种变化与因成分改变导致的结构、晶化程度、W含量、Ni_3P析出量与尺寸等因素的改变有关.
In order to explore the influence of the bath composition on Ni-W-P alloy coating structure and prop-erties, to find the right ratio, so as to lay the foundation for follow-up experiments, SEM/EDS, X-ray diffraction, and metallographic analysis and other methods were adopted to study the composition and structure of different chemical depo-sition of Ni-W-P alloy. And the hardness of different components of the sediment layers plated state and the hardness af-ter heat treatment were measured. The results show that; For the Ni-W-P alloy,plating bath composition is the key factors to determine the coating structure. Bath sodium tungsten content is increased, sub-sodium content is decreased, the coat-ing structure will take place continuous evolution which from the amorphous→crystalline→mixed nano-crystalline state,
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