People often ask questions like this: Does the low-temperature vacuum environment have any effect on piezo products? Can piezo ceramics withstand low temperatures? So today we will talk about the effects of low temperature on piezo ceramics.
First of all, it is certain that piezo ceramics can be used at low temperatures, and CoreMorrow can provide piezo ceramics for use at low temperatures of -273°C. But we need to understand that the piezo effect of piezo ceramics will be reduced when the temperature is lower than room temperature, and the output and displacement that the piezo ceramics can produce will also be greatly reduced. When the low temperature is <260K, the loss is about every K. 0.4%, in the environment of liquid nitrogen, the displacement of piezo ceramics is about 10% of the displacement at room temperature.
For different piezo materials, the curve will change.
The low-voltage cylindrical piezo ceramic actuator is designed by encapsulating the low-voltage piezo ceramic stack inside, and the outside is protected by a cylindrical stainless steel shell, and the piezo ceramic stack is preloaded through the mechanical shell, which has a higher internal mechanical preload force that can be applied to high load and high dynamic applications. It can output the displacement and output generated by the piezo ceramic stack, and can withstand a certain pulling force.
CoreMorrow’s cryogenic vacuum compatible piezo ceramic actuators have undergone cryogenic vacuum treatment and use cryogenic vacuum compatible materials to make them suitable for cryogenic vacuum applications. It is characterized by direct drive structure, large output, high precision and high reliability.
Original link：http://www.coremorrow.com/en/newsshow-66-746-1.html