System and method for applying high temperature corrosion resistant amorphous based coatings
AssigneeLiquidmetal Coatings Enterprises, LLC.
InventorsJohn Kang, Evelina Vogli, Ricardo Salas
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Abstract
An embodiment relates to a material comprising a ceramic formed from an amorphous metal alloy (amorphous metal ceramic composite), wherein the composite exhibits a higher corrosion resistance than that of Haynes 230 when exposed to molten chlorides such as KCl or MgCl2 or combinations thereof at temperatures up to 750° C. Yet, another embodiment relates to a method comprising obtaining a substrate, forming a coating of an amorphous metal alloy, heating the coating, and transforming at least a portion the amorphous metal alloy into an amorphous metalceramic composite.
Claims20
A material comprising a composite comprising an amorphous metal ceramic composite comprising an iron-based amorphous metal alloy and a ceramic formed from the iron-based amorphous metal alloy,
- wherein the composite exhibits a higher corrosion resistance than that of a Haynes 230 alloy when immersed in a molten chloride salt comprising KCl and MgCl2 in a ratio of 68/32 for 300 hours at a temperature of 750° C.;
- wherein the iron-based amorphous metal alloy is fully amorphous up to 650° C. and starts to crystallize at a temperature higher than 650° C., and
- the ceramic comprises a boride and a carbide;
- wherein the iron-based amorphous metal alloy comprising Fe100-(a+b+c)(CraXbYc);
- wherein a is about 10 to 50 wt. %;
- b is between 0 to 30 wt. %, and c is between 0 to 10 wt. %;
- wherein X and Y are elements, and X is selected from the group consisting of molybdenum, copper, cobalt, aluminum, titanium, tungsten, niobium, silicon, vanadium, and combinations thereof, and Y is selected from the group consisting of boron, carbon, silicon, and combinations thereof.
A material comprising a composite comprising an amorphous metal ceramic composite comprising a nickel-based amorphous metal alloy and a ceramic formed from the nickel-based amorphous metal alloy, wherein the composite exhibits a higher corrosion resistance than that of a Haynes 230 alloy when immersed in a molten chloride salt comprising KCl and MgCl2 in a ratio of 68/32 at a temperature of 750° C., wherein the nickel-based amorphous metal alloy is fully amorphous up to 600° C. and starts to crystallize at a temperature higher than 600° C.;
- and the ceramic comprises a boride and a carbide.
Dependencies are inferred from the claim text.