| 摘要 |
An article (1 ) comprising a cast iron bulk material (3) and having an inner surface delimiting an internal passage (2), said inner surface being coated with a coating comprising a corrosion resistant layer (4) comprising MCrAlX, wherein M is Fe, and wherein X is an active element, and a ceramic layer (5) provided outside of the corrosion resistant layer. A method of forming such an article comprises forming a core and applying a ceramic layer and a corrosion resistant layer comprising MCrAlX, wherein M is one of Fe and Ni, and wherein X is an active element, onto the core, assembling the core into a mold, casting iron into the mold at a pouring temperature lower than the melting temperature of the corrosion resistant layer to form said article, and removing the core. |
