Study on the Preparation of Multi-layer Electromagnetic Shielding Coating

The preparation of multi-layer electromagnetic shielding coating was studied on.At first,a layer of Ni -P-Cu was coated by correct disposal,a layer of Ni-P was coated.By testing,it had an excellent magnetic shielding efficiency during a widely frequency,furthermore it had a lot of excellent perform- ances,such as anti-oxidation,anti-corrupt and anti-wear and tear.