Nanocrystal-enabled Solid State Bonding
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Authors
Holm, Elizabeth A.
Puskar, Joseph D.
Reece, Mark
Tikare, Veena
Cardona, Cristina Garcia
Brewer, Luke N.
Subjects
Advisors
Date of Issue
2010-10
Date
Publisher
Language
Abstract
In this project, we performed a preliminary set of sintering experiments to examine nanocrystalenabled
diffusion bonding (NEDB) in Ag-on-Ag and Cu-on-Cu using Ag nanoparticles. The
experimental test matrix included the effects of material system, temperature, pressure, and
particle size. The nanoparticle compacts were bonded between plates using a customized hot
press, tested in shear, and examined post mortem using microscopy techniques. NEDB was
found to be a feasible mechanism for low-temperature, low-pressure, solid-state bonding of like
materials, creating bonded interfaces that were able to support substantial loads. The maximum
supported shear strength varied substantially within sample cohorts due to variation in bonded
area; however, systematic variation with fabrication conditions was also observed. Mesoscale
sintering simulations were performed in order to understand whether sintering models can aid in
understanding the NEDB process. A pressure-assisted sintering model was incorporated into the
SPPARKS kinetic Monte Carlo sintering code. Results reproduce most of the qualitative
behavior observed in experiments, indicating that simulation can augment experiments during
the development of the NEDB process. Because NEDB offers a promising route to lowtemperature,
low-pressure, solid-state bonding, we recommend further research and development
with a goal of devising new NEDB bonding processes to support Sandia’s customers.
Type
Report
Description
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
United States Government
Late Start Laboratory Directed Research and Development (LDRD)
United States Department of Energy National Nuclear Security Administration
Sandia Corporation
Lockheed Martin Corporation
U.S. Department of Energy National Nuclear Security Administration
Late Start Laboratory Directed Research and Development (LDRD)
United States Department of Energy National Nuclear Security Administration
Sandia Corporation
Lockheed Martin Corporation
U.S. Department of Energy National Nuclear Security Administration
Funder
United States Department of Energy’s National Nuclear
Security Administration under Contract No. DE-AC04-94AL85000.
Format
31 p.
Citation
Holm, Elizabeth A., Joseph D. Puskar, Mark Reece, Veena Tikare, G. C. Cardona, and L. N. Brewer. "Nanocrystal Enabled Solid State Bonding." Report SAND2010-7013, Sandia National Laboratories, Livermore, California (2010).
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.