化学镀Ni-Mo-P合金镀层的组织结构与防垢性能研究

发布时间：2019-04-26 23:19

【摘要】：目的采用材料测试方法和防垢实验,研究不同工艺条件下的化学镀Ni-Mo-P合金镀层的组织结构与防垢性能。方法在化学镀Ni-P镀层基底上,添加含有钼酸根离子杂多酸盐,在不同工艺条件下化学沉积Ni-Mo-P合金镀层,研究化学镀Ni-Mo-P合金镀层的表面形貌和组织结构,分析镀液中硼酸含量和钼酸铵含量对镀层沉积速率的影响,观测镀层在结垢实验后的表面形貌并分析结垢速率。通过SEM,XRD和EDS对化学镀Ni-Mo-P合金镀层的表面形貌和组织结构进行检测,研究在酸性镀液中硼酸含量对化学镀Ni-Mo-P工艺条件的影响。采用防垢实验测试化学镀Ni-Mo-P合金镀层的防垢性能。结果在化学镀Ni-Mo-P过程中,钼酸根离子杂多酸盐具有稳定作用。化学镀Ni-Mo-P合金镀层的化学沉积镀液的最佳工艺条件为:Ni SO4·6H_2O 16.5 g/L,Na H_2PO_2·H_2O 20 g/L,钼酸钠0.5~0.8 g/L,硼酸2 g/L,乙酸钠7.5 g/L。化学镀Ni-Mo-P合金镀层的结垢速率明显低于化学镀Ni-P镀层,具有良好的防垢能力,形成了非晶态的镀层。结论采用化学镀Ni-P镀层基底上沉积得到非晶态的Ni-Mo-P合金镀层,硼酸具有调节镀液p H值和络合作用,非晶态的Ni-Mo-P合金镀层平均结垢速率最小值为0.58μm/h,具有良好的阻垢能力。
[Abstract]:Aim to study the microstructure and anti-scaling properties of electroless plating Ni-Mo-P alloy coating under different technological conditions by means of material test and anti-scaling experiment. Methods the surface morphology and microstructure of electroless plating Ni-P alloy coating were studied by electroless deposition of Ni-Mo-P alloy coating on the substrate containing molybdate ion heteropolyacid salt under different technological conditions, and the surface morphology and microstructure of electroless plating Ni-Mo-P alloy coating were studied. The effect of boric acid content and ammonium molybdate content in plating solution on the deposition rate was analyzed. The surface morphology of the coating after scaling experiment was observed and the scaling rate was analyzed. The surface morphology and microstructure of electroless Ni-Mo-P alloy plating were examined by SEM,XRD and EDS. The effect of boric acid content in acidic plating solution on the technological conditions of electroless Ni-Mo-P plating was studied. The anti-scaling performance of electroless plating Ni-Mo-P alloy coating was tested by anti-scaling experiment. Results in the process of electroless Ni-Mo-P plating, molybdate ion heteropolyesters have a stabilizing effect. The optimum technological conditions for electroless deposition of Ni-Mo-P alloy coating are as follows: Ni SO4 路6H _ 2O 16.5 g / L, Na _ 2O _ 2PO _ 2 路H _ 2O _ 20 g / L, sodium molybdate 0.5 / 0.8 g / L, boric acid 2 g / L, sodium molybdate 0.5 / 0.8 g / L and boric acid 2 g / L, respectively. Sodium acetate 7.5 g / L. The scale formation rate of electroless plating Ni-Mo-P alloy coating is obviously lower than that of electroless plating Ni-P coating, which has good anti-scaling ability and forms amorphous coating. Conclusion amorphous Ni-P alloy coating can be obtained by deposition on the substrate of electroless plating Ni-Mo-P coating. Boric acid can regulate the pH value and complexation of the plating solution. The average scaling rate of amorphous Ni-Mo-P alloy coating is 0.58 渭 m / h, which has good scale inhibition ability.
【作者单位】：大连大学表面工程中心;大连大学机械工程学院;大连大学环境化学与工程学院;
【基金】：科技创新主体支持计划(KJCX-ZTPY-2014-0003)~~
【分类号】：TG174.4

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