抄録
The following surface treatments were conducted on cast iron by the following processes; i.e., manganese phosphate coating, electroless lead plating on manganese phosphate coating, electroless lead plating, and copper-tin alloy immersion plating. Then, frictional and wear resistances of the above coated surfaces were studied.
The results obtained were summarized as follows.
(1) These surfaces showed lower frictional coefficients, and particularly, manganese phosphate coating showed the lowest coefficient by its excellent property of preventing adhesion of metallic substances.
(2) Manganese phosphate coating showed very high wear resistance due to its high scuff resistance.
(3) Electroless lead plating on manganese phosphate coating showed higher wear resistance than manganese phosphate resistance.
(4) When the rotor coated with manganese phosphate or electroless lead plated rotor on manganese phosphate coating was combined with the stator which had been immersion plated with copper-tin alloy, showed higher wear resistance.
