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用于特殊電鍍行業的含硫活性鎳扣的制備

Preparation of activated nickel buttons with sulphur for anodic materials in the special plating industry

  • 摘要: 考察了電解液中摻硫劑TS、添加劑SB的質量濃度及電流密度等關鍵因素對鎳扣含硫量和產品物理外觀的影響,研究了1#電解鎳與含硫鎳扣產品電化學活性的區別,確定了采用硫化鎳可溶陽極電解制備含硫活性鎳扣的工藝和最佳技術參數.最佳技術參數為:摻硫劑TS的質量濃度7.53 mg·L-1、添加劑SB的質量濃度36.97 mg·L-1)、平均表觀電流密度1300 A·m-2,其他技術參數與電解鎳生產技術參數相同.在上述條件下制備出的含硫鎳扣,外表光亮,形狀規則,硫的質量分數在0.01%~0.03%之間.其電化學活性較強,化學成分也均符合1#電解鎳的要求.該工藝目前已應用于工業生產,產品可以滿足精密電鍍行業所需特殊電鍍陽極的需求.

     

    Abstract: Experiments were performed to investigate the effects of the key factors such as the mass concentrations of adding sulfur agent TS and additive SB as well as current density on the sulphur content and physical appearance of nickel buttons. Differences in electrochemical activity were analyzed between the 1# electrolysis nickel and the products of activated nickel buttons. The process and the optimum parameters of adopting the soluble anode electrolysis with nickel sulfide were decided for developing the activated nickel buttons by experiment. The optimum technological conditions were obtained as follows:the mass concentrations of adding sulphur agent TS and additive SB are 7.53 mg·L-1 and 36.97 mg·L-1 respectively, the average apparent current density is 1300 A·m-2, and other technological parameters are the same as those of the 1# electrolytic nickel. Nickel buttons with smooth surface and regular shape were developed at the parameters above, which contain sulphur from 0.01% to 0.03%. The products possess high electrochemical activity, and their chemical composition accords with the requirements of the 1# electrolysis nickel. The technology has been used in industry, and the products meet the requirements of special plating anodes for the precision electroplating industry.

     

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