High-temperature material

Details High-temperature material High-temperature material

2005-08-30

2005-08-30

Ryan, Patrick Joseph (Department: 1745)

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

C148S325000, C429S006000, C429S047000, C429S209000, C313S118000

Reexamination Certificate

active

06936217

ABSTRACT:
A high temperature material which consists of a chromium oxide forming iron alloy including:a) 12 to 28 wt % chromium,b) 0.01 to 0.4 wt % La,c) 0.2 to 1.0 wt % Mn,d) 0.05 to 0.4 wt % Ti,e) less than 0.2 wt % Si,f) less than 0.2 wt % Al,wherein, at temperatures of 700° C. to 950° C., the high temperature material is capable of forming a Mn Cr2O4spinel phase. At a temperature of 700° C. to 950° on Mn, Cr2O4the spinel phase formed protects a body, such as spark plug electrodes and other electrodes.

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