Shape Memory Micro- and Nanowire Libraries for the High-Throughput Investigation of Scaling Effects

The scaling behavior of Ti-Ni-Cu shape memory thin-film micro- and nanowires of different geometry is investigated with respect to its influence on the martensitic transformation properties. Two processes for the high-throughput fabrication of Ti-Ni-Cu micro- to nanoscale thin film wire libraries an...

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Bibliographic Details
Published in:ACS combinatorial science Vol. 19; no. 9; p. 574
Main Authors: Oellers, Tobias, König, Dennis, Kostka, Aleksander, Xie, Shenqie, Brugger, Jürgen, Ludwig, Alfred
Format: Journal Article
Language:English
Published: United States 11.09.2017
Subjects:
Alloys - chemistry
Copper - chemistry
Dental Alloys - chemistry
Materials Testing
Nanowires - chemistry
Nickel - chemistry
Particle Size
Small Molecule Libraries - chemistry
Temperature
Titanium - chemistry
shape memory alloy
zero hysteresis
thin film
scaling effects
phase transformation
combinatorial material science
ISSN:2156-8944, 2156-8944
Online Access:Get more information
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Summary:The scaling behavior of Ti-Ni-Cu shape memory thin-film micro- and nanowires of different geometry is investigated with respect to its influence on the martensitic transformation properties. Two processes for the high-throughput fabrication of Ti-Ni-Cu micro- to nanoscale thin film wire libraries and the subsequent investigation of the transformation properties are reported. The libraries are fabricated with compositional and geometrical (wire width) variations to investigate the influence of these parameters on the transformation properties. Interesting behaviors were observed: Phase transformation temperatures change in the range from 1 to 72 °C (austenite finish, (A ), 13 to 66 °C (martensite start, M ) and the thermal hysteresis from -3.5 to 20 K. It is shown that a vanishing hysteresis can be achieved for special combinations of sample geometry and composition.
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ISSN:2156-8944
2156-8944
DOI:10.1021/acscombsci.7b00065