Corrosion resistant coating containing and amorphous phase
AssigneeElisha Technologies Co LLC
InventorsRobert L. Heimann, Nancy M. McGowan, William M. Dalton, David R. Webb, David L. Price
Life of this patent
Estimating the term…
Abstract
The disclosure relates to the forming mineralized coatings on metal surfaces and to methods of forming such coatings. The coating can include a wide range of compounds and normally at least a portion of the coating corresponds to an amorphous phase. The coating and method are particularly useful in providing a corrosion resistant coating or film upon a metallic surface. This aspect of the disclosure involves the formation of a corrosion resistant “mineralized” layer of tailored composition upon a metal substrate.
Claims15
A mineralized surface formed by contacting a mineral precursor, comprising at least one silicate and having a basic pH, with a surface comprising at least one metal chosen from the group of magnesium, manganese, cobalt, nickel, copper, lead, zirconium, iron, chromium, zinc and alloys thereof wherein said mineralized surface comprises an amorphous phase and an inorganic oxide wherein the amount of oxygen present in said mineralized surface is less than stoichometric.
A mineralized layer comprising
- AxByOz—nH2)
- wherein A comprises at least one member chosen from the group of magnesium, manganese, cobalt, nickel, copper, lead, zirconium, iron, chromium, zinc and alloys thereof, B comprises silicon and at least one member chosen from the group of calcium and alkali metals wherein the values of x, y and z are greater than 0 and the ratio of y:z is less than or equal to 4:1 and wherein n ranges from about 0 to about 10.
A corrosion resistant mineralized layer comprising an amorphous phase and at least one crystalline inorganic oxide obtained by reacting a precursor, comprising at least one silicate and having a pH greater than about 8, with a surface comprising at least one metal wherein said at least one metal is present in said amorphous phase and said at least one crystalline inorganic oxide.
Dependencies are inferred from the claim text.