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On the transformation behaviour, mechanical properties and biocompatibility of two NiTi-based shape memory alloys:: NiTi42 and NiTi42Cu7

Paper ID Volume ID Publish Year Pages File Format Full-Text
13006 827 2001 9 PDF Available
Title
On the transformation behaviour, mechanical properties and biocompatibility of two NiTi-based shape memory alloys:: NiTi42 and NiTi42Cu7
Abstract

The transformation behaviour, mechanical properties and cytotoxicity of a binary NiTi42 and a ternary NiTi42Cu7 alloy have been investigated. The transformation temperatures were determined via differential scanning calorimetry, the mechanical properties have been investigated in 3-point bending tests in the temperature range between 6 and 60°C. The cytotoxicity tests were performed on both alloys in cultured epithelial cells from human gingiva. The cytotoxicity investigations included both MTT tests and morphological observations. It is shown that although the ternary alloy is characterised by a narrower hysteresis and superior mechanical properties, including fatigue resistance, its cytotoxicity is higher than that of the binary alloy. This is thought to arise from the release of copper ions in the medium, which upon atomic absorption spectroscopy measurements amount to approximately 2.8 μg cm−2 for an incubation period of 7 days.

Keywords
Shape memory alloys; NiTi; NiTiCu; Bending properties; Biocompatibility; Cytotoxicity
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On the transformation behaviour, mechanical properties and biocompatibility of two NiTi-based shape memory alloys:: NiTi42 and NiTi42Cu7
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 22, Issue 15, 1 August 2001, Pages 2153–2161
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us