发明名称 |
Austenitic stainless steel article having a passivated surface layer |
摘要 |
An austenitic stainless steel article, preferably in the form of a tubing. The article has a passivated surface layer, which in the case of a tubing is on the interior surface of the tubing. The passivated surface layer has an oxide component having Fe2O3 and Cr2O3 and a metal component of Fe with zero valence and Cr with zero valence. The ratio of the oxide component to the metal component is in excess of 8:1. |
申请公布号 |
EP1043421(A3) |
申请公布日期 |
2002.08.21 |
申请号 |
EP20000302895 |
申请日期 |
2000.04.06 |
申请人 |
CRUCIBLE MATERIALS CORPORATION |
发明人 |
TVERBERG, JOHN C. |
分类号 |
B23H5/08;B23H9/00;C23C22/50;C23C30/00;C25F1/06;C25F3/16;C25F3/24;F16L9/02 |
主分类号 |
B23H5/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|