低圧コールドスプレー亜鉛コーティングによる腐食鉄鋼構造物の耐食性再生

抄録

In this study, we investigated the applicability of the combination of the laser cleaning and cold spraying technique for corrosion repair. Zinc coating was applied to the corrosion substrates which were treated by the laser cleaning and conventional shot-blast cleaning techniques. The corrosion resistance property was evaluated by a salt spray test for 168 hours. The results showed that zinc coating was deposited successfully on the substrates treated with the laser cleaning and conventional shot-blast cleaning. As a result of the corrosion test, no corrosion of the substrate was observed, and the corrosion resistance was achieved by the cold sprayed zinc coating. In addition, a compound of zinc, chlorine, and oxygen was generated on the surface of the zinc coating, which may improve the corrosion resistance of the zinc coatings.