摘要 : The electrochemical behavior of Bi2S3 coatings in Watts nickel plating electrolyte was investigated using the cyclic voltammetry, electrochemical quartz crystal microbalance, X-ray diffraction, and energy dispersive Xray analysis ... 展开 The electrochemical behavior of Bi2S3 coatings in Watts nickel plating electrolyte was investigated using the cyclic voltammetry, electrochemical quartz crystal microbalance, X-ray diffraction, and energy dispersive Xray analysis methods. During the bismuth sulfide coating reduction in Watts background electrolyte in the potential region from 0.4 to 0.6 V, the Bi2S3 and Bi(III) oxygen compounds are reduced to metallic Bi, and the decrease in coating mass is related to the transfer of S2 ions from the electrode surface. When the bismuth sulfide coating is reduced in Watts nickel plating electrolyte, the observed increase in coating mass in the potential region 0.1 to 0.4 V is conditioned by Ni2+ ions reduction before the bulk deposition of Ni, initiated by Bi2S3. In this potential region, the reduction of Bi(III) oxygen compounds can occur.After the treatment of as-deposited bismuth sulfide coating in nickel plating electrolyte at E=0.3 V, the sheet resistance of the layer decreases from 1013 to 500–700 Ω cm. A metalrich mixed sulfide Ni3Bi2S2–parkerite is obtained when asdeposited bismuth sulfide coating is treated in Watts nickel plating electrolyte at a potential close to the equilibrium potential of the Ni/Ni2+ system and then annealed at temperatures higher than 120 °C. 收起