公开(公告)号：US20090302135A1

公开(公告)日：2009-12-10

申请号：US12226750

申请日：2007-04-24

申请人： Joachim R. Kiefer ,  Christpher Andrew Goat

发明人： Joachim R. Kiefer ,  Christpher Andrew Goat

IPC分类号： F02M51/00 ,  H01L41/22 ,  H01L41/053

CPC分类号： F02M51/0603 ,  F02M2200/16 ,  F02M2200/22 ,  H01L41/053 ,  H01L41/0533 ,  Y10T29/42

摘要： An electrical device such as a piezoelectric actuator is protected against permeation by injurious fluids such as fuel (diesel/gasoline) and water by encapsulating the device with a shape memory metallic material. The shape memory metallic material may be in the form of a tube manufactured to the required dimensions for encapsulation of the device. The tube may then be plastically deformed, such as by stretching, before being placed over the device and heated above its transformation temperature to recover its original shape. The invention is particularly suitable for protecting passivated piezoelectric actuators.

摘要翻译： 诸如压电致动器的电气装置通过用形状记忆金属材料封装该装置来防止诸如燃料（柴油/汽油）和水的有害流体的渗透。 形状记忆金属材料可以是制造成用于封装装置的所需尺寸的管的形式。 然后，管可以在被放置在器件上之前被塑性变形，例如通过拉伸，并在其转变温度之上被加热以恢复其原始形状。 本发明特别适用于保护钝化的压电致动器。