Surface modified stainless steel

Details Surface modified stainless steel Surface modified stainless steel

2005-12-20

2005-12-20

Wyszomierski, George (Department: 1742)

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C148S277000, C148S537000

Reexamination Certificate

active

06977016

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.

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P. Y. Hou et al., “Effect of Reactive Element Oxide Coatings on the High Temperature Oxidation Behavior of a FeCrAl Alloy,”J. Electrochem. Soc., vol. 139, No. 4, Apr. 1992, pp. 1119-1126.

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