脱合金法制备纳米多孔镍材料研究进展 关键词：纳米多孔材料；镍及镍合金；脱合金；研究进展 [gap=1227]Key words：nanoporous materials；nickel and nickel alloys；dealloying；research progress
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但带涤纶连接环记忆合金组合式人工食管还存在中晚期脱管的问题未能完全解决。
However, trachea cannula exodus of terylene tandem ring alloy composite artificial esophagus in middle and late phases cannot be fully solved.
目的：观察改变镍钛合金组合式人工食管的管体结构在防止脱管中的作用。
OBJECTIVE: to explore the role of the tube structure changes in Nitinol alloy composite artificial esophagus to prevent trachea cannula exodus.
脱锌现象选择性得脱离合金中的锌，造成金属多孔、富铜结构，降低合金的机械强度。
Dezincification selectively removes zinc from the alloy, leaving behind a porous, copper-rich structure that has little mechanical strength.
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