Measurement of mechanical properties of mems materials
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摘要:
微电子机械系统(MEMS)技术的迅速崛起,推动了所用材料微尺度力学性能测试技术的发展.首先按作用方式将实验分成压痕/划痕、弯曲、拉伸、扭转四大类,系统介绍检测MEMS材料微尺度力学性能的微型试样、测试方法及其实验结果.测试材料主要有硅、氧化硅、氮化硅和一些金属.实验结果主要包括基本的力学性能参数如弹性模量、残余应力、屈服强度、断裂强度和疲劳强度等.最后,简要分析了未来的发展需求.
Abstract:The rapid developments of Microelectromechanical systems (MEMS) promote studies on testing microscale mechanicalproperties for their materials. Firstly, recent methods for testing microscale mechanical properties are summarized, based on four distinct types of tests, nanoindentation/scratch, beam and film bend, tension, and torsion. The integration of the sample and loading system on the microscopic scale is explained in detail. Si, SiO2, Si3N4, Au, Ti, Ni are used in these tests. Experimental results are introduced, including elastic modulus, residual stress, yield strength, fracture strength, fatigue strength, and so on. Finally, a brief discussion on future developments is given.
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Key words:
- MEMS /
- mechanical properties /
- nanoindentation/scratch /
- bend /
- tension /
- torsion
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