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Proceedings Paper

Surface relief phenomenon in a NiTi shape memory alloy rod
Author(s): W. M. Huang; W. H. Zhang
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Paper Abstract

The surface relief phenomenon is one of the interesting properties of shape memory alloys. In this paper, this phenomenon in a NiTi shape memory alloy rod is investigated quantitatively using a temperature controllable atomic force microscope. The surface reflection, which depends heavily on the surface roughness, is studies quantitatively with different incident angles and incident directions. It is found that the incident angle α has a slight effect on the distribution of θ, which is the angle between the real reflective direction and the ideal one. The material is almost uniform in any direction, despite that only one incident angle and four directions have been analyzed. At room temperature (martensite phase), θ mainly falls to around 3°. While at 100°C (austenite phase), a large portion of θ shifts to around 20°. In order to obtain a ratio of change over 0.5, θ is expected to be at around 3°.

Paper Details

Date Published: 25 March 2004
PDF: 8 pages
Proc. SPIE 5277, Photonics: Design, Technology, and Packaging, (25 March 2004); doi: 10.1117/12.522750
Show Author Affiliations
W. M. Huang, Nanyang Technological Univ. (Singapore)
W. H. Zhang, Nanyang Technological Univ. (Singapore)

Published in SPIE Proceedings Vol. 5277:
Photonics: Design, Technology, and Packaging
Chennupati Jagadish; Kent D. Choquette; Benjamin J. Eggleton; Brett D. Nener; Keith A. Nugent, Editor(s)

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