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| ACCELERATION MECHANISM OF CYSTINE FOR ELECTROLESS NICKEL DEPOSITION |
| Han Keping;Fang Jingli;Wu Yong;Zhang Min;Wang Jianhong(Nanjing University Applied Chemistry Institute; State Key Labomtory Coordination Chemistry) |
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Abstract The influences of cystine on the electroless nickel deposition rate, hydrogen evolution, reactive activation energy, anodic oxidation of H2PO and cathodic reduction of Ni2+ were studied. The elemental composition of the deposit and the valence state of sulfur were also determined. The acceleration mechanism of cystine could be attributed to the adsorption and interaction of cystine and H2P on the active metal surface. In result, the cleavage of P-H bond of H2PO was accelerated and the electrons were much easily transported to metal surfaCe though atom S in cystine and atom H. Thus the reductions of Ni2+,H+ and H2PO on the metal surface were accelerated simultaneously.
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Received: 25 April 1996
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Cite this article:
Han Keping;Fang Jingli;Wu Yong;Zhang Min;Wang Jianhong(Nanjing University Applied Chemistry Institute; State Key Labomtory Coordination Chemistry). ACCELERATION MECHANISM OF CYSTINE FOR ELECTROLESS NICKEL DEPOSITION. J Chin Soc Corr Pro, 1996, 16(2): 81-86.
URL:
https://www.jcscp.org/EN/ OR https://www.jcscp.org/EN/Y1996/V16/I2/81
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