Formation of metallic thermal barrier alloys
AssigneeThe NanoSteel Company, Inc.
InventorDaniel James Branagan
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Abstract
Metal alloys having low electrical and thermal conductivity including relatively large fractions of P-Group element additions. The P-Group elements may be selected from the group including phosphorous, carbon, boron, and silicon. The resultant alloys do not exhibit significantly increased brittleness, and are applied as a coating that provides a metallic thermal barrier coating.
Claims8
A metallic thermal barrier coating comprising an iron base alloy metal wherein iron is present at 52.3-55.9 atomic %, chromium at 19.0-22.0 atomic %, molybdenum at 0.6-2.5 atomic %, tungsten at 0.4-1.7 atomic %, manganese at 0.9-2.0 atomic %, carbon at 3.5-4.0 atomic %, boron at 15.6-16.0 atomic %, and at least 1.2 atomic % silicon, wherein said metallic thermal barrier coating has a thermal conductivity equal to or less than about 10 W/m-K at 400 degrees Celsius.
A method for producing a metallic thermal barrier coating composition comprising:
- (a) supplying an iron base metal alloy composition wherein iron is present at 52.3-55.9 atomic %, chromium at 19.0-22.0 atomic %, molybdenum at 0.6-2.5 atomic %, tungsten at 0.4-1.7 atomic %, manganese at 0.9-2.0 atomic %, carbon at 3.5-4.0 atomic %, boron at 15.6-16.0 atomic %, and at least 1.2 atomic % silicon;
- (b) mixing said metal alloy composition and;
- (c) forming a metallic barrier thermal coating using a thermal spray process, wherein said metallic thermal barrier coating composition has a thermal conductivity equal to or less than about 10 W/m-K at 400 degrees Celsius.
Dependencies are inferred from the claim text.