Title: Hydrogen-isotope permeation barrier

Abstract: A composite including a plurality of metal layers has a Cu-Al-Fe bronze layer and at least one outer layer of a heat and corrosion resistant metal alloy. The bronze layer is ordinarily intermediate two outer layers of metal such as austenitic stainless steel, nickel alloys or alloys of the refractory metals. The composite provides a barrier to hydrogen isotopes, particularly tritium that can reduce permeation by at least about 30 fold and possibly more below permeation through equal thicknesses of the outer layer material.

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Inventors: Maroni, Victor A. (Naperville, IL, US)
Van Deventer, Erven H. (Joliet, IL, US)

Application Number: 611722
Filing Date: 1975-09-09
Publication_date: 1977-06-28
Assignee: The United States of America as represented by the United States Energy (Washington, DC)
Primary Class(es): 138/140 138/143, 138/177, 376/136, 376/146, 376/305, 376/900, 428/586, 976/DIG1, 976/DIG328, 976/DIG343
Other Classes:
US Patent Ref:

2718690	Sep, 1955	Ulam	29/196.
2845698	Aug, 1958	Giovannucci et al.	29/194.
3381364	May, 1968	Winter	29/199.
3589873	Jun, 1971	Poth	29/196.
3589874	Jun, 1971	Butt	29/196.
3614379	Oct, 1971	Troton	29/196.
3861884	Jan, 1975	Popplewell	29/199.

Other Refs:
Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Weise, E. L.
Attorney: Carlson; Dean E., Jackson; Frank H., Glenn; Hugh W.