次亚磷酸钠为还原剂的玻璃、陶瓷表面化学镀

Electroless Plating of Porcelain and Glass Surface by Using Sodium Hypophosphite as Reductant

在普通平板玻璃和空心陶瓷基材表面沉积镍磷合金。对镀液成分及用量、温度、pH值、施镀时间等工艺参数用均匀设计进行组合筛选，获得可沉积光亮Ni-P镀层的中低温酸性玻璃基体Ni-P化学镀工艺：NiSO4·7H2O 30g·L^-1，NaH2PO2·H2O 22g·L，琥珀酸36g·L^-1，添加剂A2mg·L^-1，温度48℃～50℃，pH值5．8～6．0；对玻璃表面化学镀镍进行改进获得了空心陶瓷表面高温酸性NiP化学镀工艺：NiSO4·7H2O 29g·L，NaH2PO2·H2O 38g·L^-1，琥珀酸36g·L^-1，添加剂A2mg·L^-1；温度90±1℃，pH值5．5～6．0。玻璃表面镀层表面质量良好，光亮、平整，有较好结合力；有效沉积时间达到15min时，空心陶瓷表面镀层表面质量良好，与陶瓷表面有较好结合力。

Adjusting process parameters such as composition, temperature, pH and plating time, the improved technology processes of Ni-P plating on glass surface and porcelain granule were obtained respectively. Composition of the bath for glass was nickel sulfate 30 g/L, sodium hypophosphite 22 g/L, butadiene 50 g/L, additive A 2 mg/L, temperature 48-50 ℃ and the pH 5.8-6.0. Composition of the bath for porcelain granule was nickel sulfate 29 g/L, sodium hypophosphite 38 g/L, butadiene 50 g/L, additive A 2 mg/L, temperature 90 ± 1 ℃ and the pH 5.5-6.0. The results of the performance measurement showed that Ni-P deposit on glass surface had excellent brightness, neat and good adhesion. When the effective deposit time reached to 15 min, the amorphous Ni-P films on the porcelain grain had good suface station and adhesion.