In view of the squandered metal in composite electrodeposits, for example, the squandered nickel in nickel-tungsten-tungsten carbide composite electrodeposits.

• 为节约资源，回收废弃复合镀层中的金属元素，以镍-钨-碳化钨复合镀层为例，采用复合电沉积法制得镍-钨-碳化钨复合电极。