利用高精密纳米压入仪检测微机械悬桥的载荷-挠度曲线,来研究低应力 LPCVD氮化硅薄 膜的力学特性.通过大挠度理论分析,得到考虑了衬底变形对挠度有贡献的微桥挠度解析表达式. 对于在加卸载过程中表现出完全弹性的微桥,利用最小二乘法对其挠度进行了拟合,从而得到杨氏 模量、残余应力和弯曲强度等力学特性参数.低应力 LPCVD氮化硅薄膜的研究结果 :杨氏模量为 (308.4± 24.1) Gpa , 残余应力为 (252.9± 32.4 )Mpa, 弯曲强度为 (6.2± 1.3) Gpa.
参考文献
[1] | Sharpe W.N. Jr.;Yuan B. .A new technique for measuring the mechanical properties of thin films[J].Journal of Microelectromechanical Systems: A Joint IEEE and ASME Publication on Microstructures, Microactuators, Microsensors, and Microsystems,1997(3):193-199. |
[2] | Tabata O;Kawahata K;Sugiyama S et al.Mechanical property measurements of thin films using load - deflection of composite rectangular membranes[J].Sensors and Actuators,1989,20:135-141. |
[3] | Ziebart V.;Munch U.;Schwizer J.;Baltes H.;Paul O. .Mechanical properties of thin films from the load deflection of long clamped plates[J].Journal of Microelectromechanical Systems: A Joint IEEE and ASME Publication on Microstructures, Microactuators, Microsensors, and Microsystems,1998(3):320-328. |
[4] | Buchaillot L;Farnault E;Hoummady M et al.Silicon nitride thin films Young's modulus determination by an optical non destructive method[J].Japanese Journal of Applied Physics,1997,36:1794-797. |
[5] | J. S. Burdess;A. J. Harris;D. Wood;R. Pitcher .The structural characteristics of microengineered bridges[J].Proceedings of the Institution of Mechanical Engineers, Part C. Journal of mechanical engineering science,2000(C2):351-357. |
[6] | Zhang T Y;Su Y J;Qian C F et al.Microbridge testingof silicon nitride thin films deposited on silicon wafers[J].Acta Materialia,2000,48:2843-2857. |
[7] | 铁摩辛柯·S;沃诺斯基 S.板壳理论[M].北京:科学出版社,1977 |
[8] | Nadim Maluf.An introduction to microelectromechanical systems engineering[M].Boston:Artech House,2000 |
[9] | Petersen K E;Guarnieri C R .Young's modulus measurements of thin films using micromechanics[J].Journal of Applied Physics,1979,50(11):6761-6766. |
[10] | Tai Y C;Muller R S.Measurement of Young's modulus onmicrofabricated structures using a surface profiler[A].Napa Valley CA,1990:147-152. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%