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http://dx.doi.org/10.5757/JKVS.2012.21.6.287

A Study on the PZT Application for Spacecraft Components under Space Environment  

Lee, Sang-Hoon (Korea Aerospace Research Institute)
Moon, Guee-Won (Korea Aerospace Research Institute)
Yoo, Seong-Yeon (Chung-Nam National University)
Publication Information
Journal of the Korean Vacuum Society / v.21, no.6, 2012 , pp. 287-294 More about this Journal
Abstract
In the high vacuum condition of the space, outgassing from any assembly of satellite can contaminate satellites, especially second surface mirror and optical lens, it cause satellite to fail in own missions. Therefore, all unit shall be check for compatibility with vacuum using CVCM (Collected Volatile Condensable Material) and TML (Total Mass Loss) in advance. CVCM and TML of the PZT-5 piezoelectric ceramic vibrator has less than 0.1% and 1.0% respectively. Also, it has less than 500 $ng/cm^2/hr$ of Thermoelectric Quartz Crystal Microbalance for vacuum bake-out test using high temperature(more than $80^{\circ}C$) and high vacuum (less than $5.0{\times}10^{-3}$ Pa). Thus, piezoelectric ceramic vibrator may be employed in the vacuum environments. Finally, it can be confirmed that the characteristics change of the piezoelectric ceramic vibrator is less than 1% under vacuum environments.
Keywords
PZT actuator; Collected volatile condensable material; Total mass loss; Thermoelectric quartz crystal microbalance; Outgassing; Coupling factor;
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Times Cited By KSCI : 3  (Citation Analysis)
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