pp. 113-120
S&M1161 Research Paper of Special Issue https://doi.org/10.18494/SAM.2016.1257 Published: February 24, 2016 Effect of Temperature and Humidity on Degradation of Single-Crystal Silicon Microbeam in MEMS Resonator [PDF] Taeko Ando, Mitsuhiro Shikida, and Kazuo Sato (Received October 6, 2015; Accepted December 28, 2015) Keywords: single-crystal silicon, fatigue strength, temperature, humidity, fracture surface
The fatigue property of single-crystal silicon was studied as a function of environmental conditions, both temperature and humidity, using a fan-shaped resonator. The fatigue tests were conducted in a custom-made measurement setup consisting of an environmental chamber, a heating system, a moisture generator unit, an electrical control system, and an observation system. As a result, it was found that the fatigue strength was markedly decreased under a highly humid condition, but the decrease in fatigue strength due to high humidity was suppressed at a high temperature. Scanning electron microscopy (SEM) observation of the fracture surface of a specimen revealed that the morphologies of the fracture surface depended on the applied stress without both temperature and humidity effects.
Corresponding author: Taeko AndoCite this article Taeko Ando, Mitsuhiro Shikida, and Kazuo Sato, Effect of Temperature and Humidity on Degradation of Single-Crystal Silicon Microbeam in MEMS Resonator, Sens. Mater., Vol. 28, No. 2, 2016, p. 113-120. |