Brazing method
Abstract
There is disclosed a positive cathode electrode structure formed by brazing a thin porous membrane to a backing material by preselecting a predetermined area of the thin porous membrane and thereafter providing a braze flow barrier throughout the remainder of the membrane and electrolessly plating a nickel-phosphide alloy on the backing material, or in this case the honeycomb structure. The preselected area of the thin porous membrane is placed in intimate contact with the electrolessly plated portion of the backing material and heated to elevated temperatures in the absence of oxygen to form a brazed joint limited to a preselected area. If the braze flow barrier is provided by application of a liquid organic solvent, then the organic solvent is driven off by maintaining the thin porous membrane at elevated temperatures for an extended period of time prior to the brazing operation.
- Inventors:
-
- Simi, CA
- Encino, CA
- Schaumburg, IL
- Issue Date:
- OSTI Identifier:
- 864024
- Patent Number(s):
- 4293089
- Application Number:
- 06/037,076
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23K - SOLDERING OR UNSOLDERING
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- DOE Contract Number:
- W-31109-ENG
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- brazing; method; disclosed; positive; cathode; electrode; structure; formed; porous; membrane; material; preselecting; predetermined; thereafter; providing; braze; flow; barrier; throughout; remainder; electrolessly; plating; nickel-phosphide; alloy; honeycomb; preselected; placed; intimate; contact; plated; portion; heated; elevated; temperatures; absence; oxygen; form; brazed; joint; limited; provided; application; liquid; organic; solvent; driven; maintaining; extended; period; time; prior; operation; honeycomb structure; flow barrier; time prior; porous membrane; structure formed; electrode structure; elevated temperatures; organic solvent; elevated temperature; intimate contact; cathode electrode; extended period; liquid organic; electrolessly plated; comb structure; /228/
Citation Formats
McCormick, James T, Ferry, Paul B, and Hall, John C. Brazing method. United States: N. p., 1981.
Web.
McCormick, James T, Ferry, Paul B, & Hall, John C. Brazing method. United States.
McCormick, James T, Ferry, Paul B, and Hall, John C. Tue .
"Brazing method". United States. https://www.osti.gov/servlets/purl/864024.
@article{osti_864024,
title = {Brazing method},
author = {McCormick, James T and Ferry, Paul B and Hall, John C},
abstractNote = {There is disclosed a positive cathode electrode structure formed by brazing a thin porous membrane to a backing material by preselecting a predetermined area of the thin porous membrane and thereafter providing a braze flow barrier throughout the remainder of the membrane and electrolessly plating a nickel-phosphide alloy on the backing material, or in this case the honeycomb structure. The preselected area of the thin porous membrane is placed in intimate contact with the electrolessly plated portion of the backing material and heated to elevated temperatures in the absence of oxygen to form a brazed joint limited to a preselected area. If the braze flow barrier is provided by application of a liquid organic solvent, then the organic solvent is driven off by maintaining the thin porous membrane at elevated temperatures for an extended period of time prior to the brazing operation.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 06 00:00:00 EDT 1981},
month = {Tue Oct 06 00:00:00 EDT 1981}
}