2024铝合金化学镀Ni-P加速剂的研究

研究了硫脲、碘酸钾以及两者复合后对2024铝合金化学镀Ni-P合金镀层沉积速率的影响。结果表明:硫脲、碘酸钾都可以促进Ni-P合金在铝合金表面的沉积,且当镀液中硫脲、碘酸钾的质量浓度分别为3mg/L和20mg/L时,沉积速率都达到了最大值;并且当两者复合以后,镀层沉积速率又明显提高;当镀液中硫脲和碘酸钾的质量浓度比为1:5时,沉积速率达到最高值,此时镀层质量良好,耐蚀性高。

A Study of the Accelerator for Electroless Plating Ni-P on 2 024 Aluminum Alloy

The effects of thiourea(TU),KIO_3 and their compounds on deposition velocity of Ni-P electroless plating for 2 024 aluminum alloy were studied.The experimental results show that TU and KIO_3 both can accelerate the deposition of Ni-P coating on aluminum alloy,and when the mass concentration of TU and KIO_3 in the bath was 3 mg/L and 20 mg/L respectively,the deposition velocity of both is the highest.Furthermore,the optimal acceleration efficiency can be obtained by compounding TU and KIO_3 at a mass ratio o...