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镍钛合金(NiTi)的形状记忆效果,是1963年美国的海军军械部实验室(Nav al Ordnancel aboratory)发现的。取等原子比附近的镍钛材料的字头,称为Nitinol,强度耐蚀性极好,有热弹力型的马氏体变态,有种种难以想象的性质。即用记忆处理,使它记住一定温度下的形状,再把它冷却后,使之变为另外的形状,如在加热到一定温度时,可以完全恢复到使其记忆的原来状态,即具有形状记忆效应(Shape memory effect)。产生这种形状记忆的温度,可由变更镍的浓度,添加微量的
The shape memory effect of NiTi was discovered by the Naval Ordnancel aboratory in 1963 in the United States. Take the atomic ratio of nickel-titanium near the prefix, known as Nitinol, excellent corrosion resistance, thermoformed martensite metamorphosis, there are a variety of unimaginable nature. That is, memory processing, make it remember the shape of a certain temperature, and then cool it, make it into another shape, such as heating to a certain temperature, can be fully restored to its original state of memory, that is, with Shape memory effect. The temperature at which this shape memory occurs can be achieved by varying the concentration of nickel and adding trace amounts