PROBLEM TO BE SOLVED: To provide an Ni-Cu alloy composite plating solution which can enhance the corrosion resistance and lubricity of a plating coating.;SOLUTION: The Ni-Cu alloy composite plating solution 29 enables the alternative lamination of Ni alloy layers 4a and Cu alloy layers 4b on the inside face 2a of a cylinder by causing electric current to flow therein. The Ni-Cu alloy composite plating solution 29 contains at least one selected from C, h-BN and MoS2 as self-lubricating particles 5, contains at least one selected from SiC, Si3N4, Al2O3, c-BN and diamond as hard particles 6, contains a cationic surfactant as a surfactant, and contains sodium saccharate as a hardness increasing agent.;COPYRIGHT: (C)2002,JPO
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机译：解决的问题：提供一种能够增强镀层的耐腐蚀性和润滑性的Ni-Cu合金复合镀覆溶液;解决方案：Ni-Cu合金复合镀覆溶液29能够交替层压Ni合金层4a和通过使电流在圆柱体的内表面2a上的Cu合金层4b在其中流动。 Ni-Cu合金复合镀液29含有选自C，h-BN和MoS 2中的至少一种作为自润滑颗粒5，含有选自SiC，Si 3 N 4，Al 2 O 3，c-BN和金刚石中的至少一种作为硬质颗粒6。 ，含有阳离子表面活性剂作为表面活性剂，并含有糖酸钠作为增硬剂。;版权所有：（C）2002，JPO
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