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Title: Method for eliminating runout of braze filler metal during active brazing

Patent ·
OSTI ID:1892589
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Nanometers thick conformal coatings deposited by atomic-layer deposition (ALD) onto the metal surface of an active braze joint modifies the surface chemistry to eliminate excess braze filler metal flow. Unlike other means used to prevent braze filler metal runout, the thin ALD coating does not hinder next assembly processes, does not require post-braze cleaning, and does not alter the base material mechanical properties.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
DOE Contract Number:
NA0003525
Assignee:
National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
Patent Number(s):
11,241,752
Application Number:
16/409,087
OSTI ID:
1892589
Resource Relation:
Patent File Date: 05/10/2019
Country of Publication:
United States
Language:
English

References (6)

Solder active braze patent December 1997
Surface preparation for high purity alumina ceramics enabling direct brazing in hydrogen atmospheres patent November 2001
Viscous flow reactor with quartz crystal microbalance for thin film growth by atomic layer deposition journal August 2002
Atomic Layer Deposition and Conversion patent-application February 2005
Interface Reactions Responsible for Run-Out in Active Brazing: Part 1 journal February 2018
Soldering method and method of manufacturing semiconductor device including soldering method patent-application August 2008

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