Corrosion performance of plasma-sprayed cast iron coatings on aluminum alloy for automotive components
この論文をさがす
説明
Abstract Corrosion behaviour of coatings sprayed with water-atomized (WA), cast iron powder were investigated by surface analyses and electrochemical methods, such as potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) in deaerated 0.5 M H 2 SO 4 solution. WA cast iron powders of Fe–3.75C–3.60Si–3.93Al (wt.%) were deposited onto an aluminum alloy (AA383 alloy) substrate by atmospheric DC plasma spraying. Four types of samples were prepared including cast iron liner and aluminum alloy substrate. C 1 coating was produced by using as-received WA cast iron powders without graphite and C 2 coating by using pre-annealing cast iron powder containing graphite structure. The results of the electrochemical tests indicated that the C 2 coating had greater corrosion-resistant properties than the C 1 coating, which could be attributed to its lower porosity, higher protective efficiency, and increased packing factor.
収録刊行物
-
- Surface and Coatings Technology
-
Surface and Coatings Technology 200 1162-1167, 2005-10-01
Elsevier BV