| 摘要 |
<p>The steel sheet is coated with aluminum based alloy. After solidification of the applied coating, the sheet is subjected to a heat treatment that carries at least the outer layer (8) to a temperature greater than 570oC and lower than 660oC. Fabrication of a steel sheet (2) coated with an aluminum based metallic coating, principally subdivided into two layers, an inner layer (7) made up of one or several alloys with an iron, aluminum and/or silicon base and an outer layer (8) made up essentially of an aluminum based alloy. Other phases in the form of needles or elongated platelets (9) are distributed throughout the aluminum based alloy, which is applied by soaking in a bath of an aluminum based alloys. After solidification of the applied coating, the sheet is subjected to a heat treatment that carries at least the outer layer (8) to a temperature greater than 570oC and lower than 660oC. Sheet steel coated with an aluminum based alloy in accordance with this method is also claimed.</p> |
