In situ transmission electron microscopy investigation of the interfacial reaction between Ni and Al during rapid heating in a nanocalorimeter

Journal Article · Sat Nov 01 04:00:00 EDT 2014 · APL Materials

DOI:https://doi.org/10.1063/1.4900818· OSTI ID:22303417

LaGrange, Thomas; Reed, Bryan W.; Campbell, Geoffrey H. ^[1]; Woll, Karsten ^[2]

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1. Lawrence Livermore National Laboratory, Materials Science and Technology Division, Livermore, California 94550 (United States)
2. Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218 (United States)

The Al/Ni formation reaction is highly exothermic and of both scientific and technological significance. In this report, we study the evolution of intermetallic phases in this reaction at a heating rate of 830 K/s. 100-nm-thick Al/Ni bilayers were deposited onto nanocalorimeter sensors that enable the measurement of temperature and heat flow during rapid heating. Time-resolved transmission electron diffraction patterns captured simultaneously with thermal measurements allow us to identify the intermetallic phases present and reconstruct the phase transformation sequence as a function of time and temperature. The results show a mostly unaltered phase transformation sequence compared to lower heating rates.

• OSTI ID: 22303417
• Journal Information: APL Materials, Journal Name: APL Materials Journal Issue: 11 Vol. 2; ISSN AMPADS; ISSN 2166-532X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
77 NANOSCIENCE AND NANOTECHNOLOGY
DEPOSITS
ELECTRON DIFFRACTION
HEATING RATE
NANOSTRUCTURES
PHASE TRANSFORMATIONS
SENSORS
TIME DEPENDENCE
TRANSMISSION ELECTRON MICROSCOPY