Guanidine based vehicle/binders for use with oxides, metals and ceramics
AssigneeThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration
InventorsWarren H. Philipp, Lisa C. Weitch, Martha H. Jaskowiak
Life of this patent
Estimating the term…
Abstract
The use of guanidine salts of organic fatty acids (guanidine soaps) as vehicles and binders for coating substrate surfaces is disclosed. Being completely organic, the guanidine soaps can be burned off leaving no undesirable residue. Of special interest is the use of guanidine 2-ethyl hexanoate as the vehicle and binder for coating problematic surfaces such as in coating alumina fibers with platinum or zirconia. For this application the guanidine soap is used as a melt. For other applications the guanidine soap may be used in a solution with a variety of solvents, the solution containing chlorometalates or powdered metals, refractories or ceramics.
Claims5
A method for coating an aluminum oxide fiber with platinum comprising the steps of:
- dissolving guanidine 2-ethyl-hexanoate in an organic solvent to form a solution, said guanidine 2-ethyl-hexanoate serving as a vehicle and binder;
- adding guanidine chloroplatinate to said solution;
- drawing said fiber through said solution thereby forming a coated fiber;
- and
- heating said coated fiber to drive off substantially all organic components and to bond the platinum to said fiber.
Dependencies are inferred from the claim text.