COATING MATERIAL FOR METALLIC BASE MATERIAL SURFACE
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United States of America Patent
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app pub date -
Mar 15, 2011
filing date -
Mar 5, 2009
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Abandoned
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Abstract
A spraying material for coating a metallic member, being inexpensive and having superior corrosion and erosion resistance even in high temperature environments, wherein the material is composed of an Fe—Si based compound and comprises an alloy composed of 10 to 35% by weight of Si and the remainder of Fe and inevitable impurities, and further, up to 5% by weight of B may be added to the material in terms of improvement in hardness and adhesiveness of the coating is provided in order to protect components such as heaters and water walls of coal fired boilers and heat exchanger tubes of fluidized bed boilers, etc., from corrosion and erosion. The spraying material is formed into a coating by, for example, high velocity flame spraying or atmospheric plasma spraying.
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