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Title: Gold-nickel-titanium brazing alloy

Abstract

A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.

Inventors:
 [1]
  1. (Hillsborough, CA)
Publication Date:
OSTI Identifier:
867443
Patent Number(s):
US 4938922
Application Number:
07/370,490
Assignee:
GTE Products Corporation (Stamford, CT) OSTI
DOE Contract Number:
86X-SB047C
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gold-nickel-titanium; brazing; alloy; accordance; following; composition; weight; 91; 99; gold; nickel; 10; titanium; alternatively; palladium; follows; 83; 96; brazing alloy; gold-nickel-titanium brazing; following composition; /420/228/428/

Citation Formats

Mizuhara, Howard. Gold-nickel-titanium brazing alloy. United States: N. p., 1990. Web.
Mizuhara, Howard. Gold-nickel-titanium brazing alloy. United States.
Mizuhara, Howard. 1990. "Gold-nickel-titanium brazing alloy". United States. doi:. https://www.osti.gov/servlets/purl/867443.
@article{osti_867443,
title = {Gold-nickel-titanium brazing alloy},
author = {Mizuhara, Howard},
abstractNote = {A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month = 7
}

Patent:

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  • A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99 gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
  • A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99 gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
  • A brazing alloy in accordance with this invention has the following composition, by weight: 91 to 99% gold, 0.5 to 7% nickel; 0.10 to 2% titanium. Alternatively, with palladium present, the composition is as follows, by weight: 83 to 96% gold; 3 to 10% palladium; 0.5 to 5% nickel; 0.10 to 2% titanium.
  • This patent describes a brazing alloy. It has a brazing temperature of about 1020{degrees} to 1250{degrees} C. It consists of, in weight percent, 37-75 titanium, 5-43 niobium, 20-58 nickel.
  • A method of fabricating a heat exchanger includes brush electroplating plated layers for a brazing alloy onto a stainless steel tube in thin layers, over a nickel strike having a 1.3 .mu.m thickness. The resultant Au-18 In composition may be applied as a first layer of indium, 1.47 .mu.m thick, and a second layer of gold, 2.54 .mu.m thick. The order of plating helps control brazing erosion. Excessive amounts of brazing material are avoided by controlling the electroplating process. The reticulated copper foam rings are interference fit to the stainless steel tube, and in contact with the plated layers. Themore » copper foam rings, the plated layers for brazing alloy, and the stainless steel tube are heated and cooled in a vacuum furnace at controlled rates, forming a bond of the copper foam rings to the stainless steel tube that improves heat transfer between the tube and the copper foam.« less