Study of the structure and interface of NiTi SMA/FC composite films prepared by the sol-gel method

Journal Article · Fri Feb 15 00:00:00 EST 2008 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2006.11.029· OSTI ID:21062196

Liu, Y F; Ma, X ^[1]; Han, X ^[2]

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1. School of Material Science and Engineering, Tianjin University of Technology, Tianjin, 300191 (China)
2. Research Institute of Physical Material, Tianjin University of Technology, Tianjin, 300191 (China)

Ferroelectric ceramic (FC) films were prepared on a NiTi shape memory alloy (NiTi SMA) substrate by the sol-gel method. The effect of the heat treatment temperature on the crystallization of both the NiTi SMA and ferroelectric ceramic is discussed. The heterostructure of the interface was characterized by scanning electron microscopy and X-ray diffraction. The results indicate that aging reactions in the NiTi SMA substrate were restricted by the presence of the ceramic film. Also, the transitional TiO{sub 2} layer produced in-situ by the oxidation of the surface of the NiTi SMA substrate improves the adhesion between the ceramic film and NiTi SMA.

• OSTI ID: 21062196
• Journal Information: Materials Characterization, Vol. 59, Issue 2; Other Information: DOI: 10.1016/j.matchar.2006.11.029; PII: S1044-5803(06)00352-4; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
CRYSTALLIZATION
FERROELECTRIC MATERIALS
FILMS
HEAT TREATMENTS
INTERFACES
LAYERS
NICKEL ALLOYS
OXIDATION
SCANNING ELECTRON MICROSCOPY
SHAPE MEMORY EFFECT
SOL-GEL PROCESS
SUBSTRATES
TITANIUM ALLOYS
TITANIUM OXIDES
X-RAY DIFFRACTION