Hydrogen permeation resistant barrier
First Claim
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1. A method for minimizing the diffusion of hydrogen and its isotopes through a metal wall comprising:
- diffusing aluminum into said metal wall, forming an intermetallic aluminide barrier coating, and placing said barrier in contact with molten alkali metal containing hydrogen.
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Abstract
A hydrogen permeation resistant barrier is formed by diffusing aluminum into an iron or nickel alloy and forming an intermetallic aluminide layer.
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Citations
7 Claims
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1. A method for minimizing the diffusion of hydrogen and its isotopes through a metal wall comprising:
- diffusing aluminum into said metal wall, forming an intermetallic aluminide barrier coating, and placing said barrier in contact with molten alkali metal containing hydrogen.
- View Dependent Claims (2, 3, 4, 5, 6)
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7. A hydrogen diffusion resistant component for a liquid metal fast breeder reactor or a fusion reactor containing molten alkali metal as a coolant, in which said component is subjected to an environment of molten alkali metal and hydrogen, comprising:
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a. a metal wall of an austenitic, ferritic, or nickel-rich alloy; and b. a hydrogen permeation resistant intermetallic aluminide coating of Fe3 Al, FeAl, Fe3 Al2, Ni3 Al, NiAl, or AiAl2 formed by the diffusion of aluminum into a surface of said metal wall.
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Specification