▎ 摘　　要

NOVELTY - Composite plating solution comprises 0.04-0.07 Molar nickel(II) sulfate hexahydrate, 0.12-0.14 Molar sodium tungstate dihydrate, 0.15 Molar sodium bromide, 0.40-0.50 Molar sodium citrate, 0.50-0.60 Molar ammonium chloride, 0.10-0.60 g/liter sodium dodecyl sulfate and 0.5-10 g/liter graphene oxide. USE - Composite plating solution. ADVANTAGE - The composite plating solution is uniform, compact, durable, corrosion resistant and has low friction coefficient. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing composite plating solution, which involves: (A) polishing steel with sandpaper and then subjecting to ultrasonic cleaning; (B) degreasing and then subjecting to ultrasonic cleaning; (C) carrying out acid washing for activating the surface; and (D) carrying out pulse plating and then electroplating and cleaning to obtain finished product, where current density is 5-10 Ampere/decimeter square, pH is 7.5-8.5, time is 40-60 minutes and temperature is 65-75 degrees C.