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Memory Metal

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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Chem. Educ. 2005, 82, 10, 1488A
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    Memory Metal
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    Journal of Chemical Education

    Cite this: J. Chem. Educ. 2005, 82, 10, 1488A
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    https://doi.org/10.1021/ed082p1488A
    Published October 1, 2005
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    Abstract

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    Nitinol metal, also known as "memory" metal, is an alloy of nickel and titanium which exhibits interesting "shape memory" properties. Nitinol's properties are a result of its ability to undergo a solid-to-solid phase change. The nickel and titanium atoms undergo slight shifts in the metal's overall structure as it changes from a low-temperature martensite phase to a high-temperature austenite phase and vice versa. In this Activity, students investigate the properties of wire made from nitinol metal and compare its properties to wire made from other metals such as copper and galvanized steel. Using the observed properties of nitinol metal, students then design (and may make) a toy that would use nitinol metal to operate. This Activity complements the National Chemistry Week 2005 theme, "The Joy of Toys".

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    Journal of Chemical Education

    Cite this: J. Chem. Educ. 2005, 82, 10, 1488A
    Click to copy citationCitation copied!
    https://doi.org/10.1021/ed082p1488A
    Published October 1, 2005
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