公开(公告)号：US20040009296A1

公开(公告)日：2004-01-15

申请号：US10616988

申请日：2003-07-11

Applicant: SANDVIK AB

Inventor： Jan Andersson ,  Magnus Cedergren

IPC: C23C016/00

CPC classification number: C23C18/1279 ,  C23C18/1208 ,  C23C18/1241

Abstract: A method has been developed for surface modifications of high temperature resistant alloys, such as FeCrAl alloys, in order to increase their resistance to corrosion at high temperatures. Coating it with a Ca-containing compound before heat-treating builds a continuous uniform and adherent layer on the surface of the alloy, that the aluminum depletion of the FeCrAl alloy is reduced under cyclic thermal stress. By this surface modification the resistance to high temperature corrosion of the FeCrAl alloy and its lifetime are significantly increased.

Abstract translation: 为了提高耐高温腐蚀性，已经开发了用于耐高温合金如FeCrAl合金的表面改性的方法。 在热处理前用含Ca化合物进行涂覆，在合金表面形成连续的均匀和粘附层，使FeCrAl合金的铝耗尽在循环热应力下降低。 通过这种表面改性，FeCrAl合金的耐高温腐蚀及其寿命显着增加。