| 单词 |
Nitinol |
| 释义 |
Nitinol|ˈnɪtɪnɒl|
[f. Ni, chem. symbol for nickel + Ti, chem. symbol for titanium + the initial letters of Naval Ordnance Laboratory, Silver Spring, Maryland, U.S.A., the place of work of the metallurgists who discovered the alloy and invented its name.]
An alloy of nickel and titanium; esp. one composed of equimolecular proportions of these elements, which has the property that after deformation it will return to its former shape when heated to a certain transition temperature.
1968Buehler & Wang in Ocean Engin. I. 105 (heading) A summary of recent research on the Nitinol* alloys and their potential application in ocean engineering. [Note] *Name derived from Ni-Ti-NOL. Prefix numeral value (e.g., 55-Nitinol) indicates the nominal nickel content in weight per cent, balance titanium. Ibid., The 55-Nitinol was found to be a single phase alloy containing only TiNi phase.., while nickel-rich TiNi alloys showed a TiNi3 phase that co-existed in varying quantity with the TiNi phase. Nominal 55-Nitinol..exhibits a very unusual ‘mechanical memory’. Ibid. 106, 55-Nitinol and 60-Nitinol must be considered as separate and distinct alloy types. 1969Nature 29 Nov. 844/2 An object made of ‘Nitinol’ can be deformed to an arbitrary shape, briefly heated to ‘fix’ that shape, and then possesses a ‘memory’. 1971Sci. Amer. Mar. 48/1 At present the only commercial use of Nitinol is in a heat-shrinkable tube coupling. |
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