THE COMPOSITE OF COATING AGENT FOR MAGNETIC MATERIALS SURFACE TREATMENT AND SURFACE TREATMENT METHOD

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The present invention relates to a coating agent composition for treating the surface of a magnetic material and a surface treating method using the same. The coating agent composition comprises an epoxy resin, a zinc-aluminum composite metal powder, and a solvent. The zinc-aluminum composite metal powder, on the basis of 100 parts by weight of the composition, comprises 15 to 25 parts by weight of zinc and 5 to 15 parts by weight of aluminum. The epoxy resin and the zinc-aluminum composite metal powder are included at a weight ratio of 1 : 1 to 1 : 2. Environmental contamination caused by a waste liquid which is a byproduct of a conventional plating process is prevented, so environmentally-friendly properties are ensured. Adhesion with rare earth ncodymium sintered magnet material is excellent, and a process condition is optimized, so energy and process costs are simultaneously saved and excellent anticorrosion and sticking properties are ensured.(S10) Pretreat a base material (low temperature preheating)(S20) Produce a first composite film(S30) Firstly coat the same (low temperature coating)(S40) Firstly harden the same (first coating layer production)(S50) Produce a second composite film(S60) Secondly coat the same (low temperature coating)(S70) Secondly harden the same (second coating layer production)COPYRIGHT KIPO 2016