| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9821524 | Vacuum | 2005 | 7 Pages |
Abstract
Al-Cu-Fe-Cr quasicrystalline coating was deposited on a substrate of stainless steel by low-pressure plasma spraying (LPPS) method. The corrosion behavior of such coating was studied by polarization in 1Â mol/l H2SO4 and 0.1Â mol/l NaOH solutions at room temperature. The polarization curve shows that LPPS Al-Cu-Fe-Cr quasicrystalline coating can turn to passive state both in 1Â mol/l H2SO4 solution and in 0.1Â mol/l NaOH solution. The corrosion resistance of the coating is poorer than that of bulk quasicrystal in 0.1Â mol/l NaOH solution. Also in strong alkaline solution the corrosion resistance of the coating is much poorer than single-phase austenitic stainless-steel 1Cr18Ni9Ti. In the later period of polarization, the Al2O3 layer formed on surface of the coating is destroyed by localized corrosion.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Yongwang Kang, Chungen Zhou, Shengkai Gong, Huibin Xu,