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Vol.35, No.9, 1211 ~ 1218, 1997
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| Title |
| A Study on Corrosion-Resistive Coating for 316L Stainless Steel Ⅰ. Ni-Al Metallic Coating |
| 송석권 , 황일두 , 김남진 , 이덕열 Suk Kwan Song , Il Doo Hwang , Nam Jin Kim , Dok Yol Lee |
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| Abstract |
| 316L stainless steel plates, which are usually used for metallic components of molten carbonate fuel cells, were coated with nickel and aluminum successively for the enhancement of their corrosion resistance. Electroplating and pack cementation were employed respectively for nickel and aluminum coating. The corrosion property of the coated specimen was checked by dipping test and anodic polarization test, and compared with those of the bare stainless steel and the one coated only with aluminum. In the case of dipping test the specimen was characterized, before and after the test, using optical microscopy to study the morphology of its cross-section, and X-ray diffraction to identify the phases of the coated layer. Intermetallic compound of Al₃Ni₂ was formed on the surface of the coated specimen and this specimen turned out to be highly resistant to corrosion, even more than the one coated only with aluminum. |
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