전기아연도금 강판의 몰리브데이트 화성처리
Molybdate Chemical Conversion Coating of Electro-Galvanized Steel
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Abstract
Molybdate chemical conversion coating layer formed on EGI has been studied in view of corrosion resistance, surface morphologies, and phases formed. It was found that coating layer consists of MoO3, MoO2, Mo oxides having lower valences than 4 and ZnO. It is interesting to note that the coating layer formed at high Mo concentration (30 g/l) in the temperature range of 40-60oC exhibited relatively high corrosion resistance, although thickness of coating layer is nearly identical with those formed under the other conditions. It was believed that an increase of driving force due to high Mo concentration plays an important role in the formation of corrosion-resistant coating layer, probably due to the formation of dense coating layer.
참고문헌 (5)
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