Materials having an enhanced emissivity and methods for making the same
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United States of America Patent
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Feb 2, 2016
Grant Date -
Jan 1, 2009
app pub date -
Nov 7, 2006
filing date -
Nov 7, 2005
priority date (Note) -
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Abstract
Exemplary materials exhibiting high emissivity and methods for making them are provided. These materials can include a porous coating of small particles provided on a substrate, where the particles can resist sintering and further densification at high temperatures. These materials may be formed by generating an arc using a one-sided electrode apparatus, where particles produced by the arc and electrode can impinge on the substrate and adhere to it. The coating can include predominantly undensified small particles which can have a size less than about 1 μm. These materials can have an emissivity greater than 0.8 or 0.9. Such materials can be used to form infrared emitters which may provide greater energy efficiency and increased operating lifetime as compared to uncoated emitters. Surfaces coated with small particles may be used in further applications such as catalytic or reactive surfaces, engine components, or acoustical dampening surfaces.
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