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 brittlenes
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.
대표청구항▼
What is claimed is: 1. 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
What is claimed is: 1. 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. 2. The metallic thermal barrier coating of claim 1 wherein iron is present at 52.3 atomic %, chromium at 19.0 atomic %, molybdenum at 2.5 atomic %, tungsten at 1.7 atomic %, boron at 16.0 atomic %, carbon at 4.0 atomic %, silicon at 2.5 atomic % and manganese at 2.0 atomic %. 3. The metallic thermal barrier coating according to claim 1, wherein boron is present at 16.0 atomic % and carbon is present at 4.0 atomic %. 4. The metallic thermal barrier coating according to claim 1 wherein iron is present at 55.9 atomic %, chromium at 22.0 atomic %, molybdenum at 0.6 atomic %, tungsten at 0.4 atomic %, boron at 15.6 atomic %, carbon at 3.5 atomic %, silicon at 1.2 atomic %, and manganese at 0.9 atomic %. 5. 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. 6. The method of claim 5, wherein iron is present at 52.3 atomic %, chromium at 19.0 atomic %, molybdenum at 2.5 atomic %, tungsten at 1.7 atomic %, boron at 16.0 atomic %, carbon at 4.0 atomic %, silicon at 2.5 atomic % and manganese at 2.0 atomic %. 7. The method of claim 5, wherein iron is present at 55.9 atomic %, chromium at 22.0 atomic %, molybdenum at 0.6 atomic %, tungsten at 0.4 atomic %, boron at 15.6 atomic %, carbon at 3.5 atomic %, silicon at 1.2 atomic %, and manganese at 0.9 atomic %. 8. The metallic thermal barrier coating of claim 1, wherein metallic thermal barrier coating composition is sourced from a powder having a particle size in the range of 10 to 45 microns or 22 to 53 microns.
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이 특허에 인용된 특허 (15)
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