什么是镀合金,结实么?

2025年04月08日 00:39
有2个网友回答
网友(1):

  一般来说,两种或两种以上金属离子在阴极上共沉积形成均匀细致镀层的过程叫做合金镀。
  镀合金特点:
  一、镀层致密性强:改善结合力,有利于基体与镀层之间牢固的结合,有利于获得成份稳定的合金镀层。
  二、沉积速度快:降低孔隙率,晶核的形成速度大于成长速度,促使晶核细化。改善覆盖能力和分散能力,减缓形态复杂零件的突出部位由于沉积离子过度消耗而带来的“烧焦”“树枝状”沉积的缺陷,节省原材料。
  三、硬度高,耐磨性好:改进镀层的机械物理性能,如提高密度降低表面电阻和体电阻,提高韧性、耐磨性、抗蚀性。降低镀层的内应力,改善晶格缺陷,容易得到无裂纹的镀层,减少添加剂。

网友(2):

两种或两种以上金属离子在阴极上共沉积形成均匀细致镀层的过程叫做合金镀,一般来讲其最小组分应大于1%。然而像镉钛、锌钛合金镀层中钛含量小于0.1%,但这些镀层由于少量金属元素的加入具有特殊性能,故也可称合金镀层。因此把两种或两种以上的合金放阴极液内插上电源形成一层合金镀的金属叫镀合金。它比没有这种合金镀的金属材料要结实得多,机械性能也高很多

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