欢迎登录材料期刊网

材料期刊网

高级检索

基于Hertz方程,修正了平头压痕薄膜系统的力学模型,建立了用于评估球头压痕确定薄膜弹性模量的等效膜厚法.采用有限元方法对模型进行计算分析,结果发现,当薄膜弹性模量大于基体时,计算误差小于Ranjana和William (RW)模型[1];当薄膜弹性模量小于基体时,对于较深的压痕计算得到的结果仍然和理论值相符,说明本模型可以用于比较深的压痕情况.另外,研究了薄膜屈服强度和球压头半径对计算结果的影响,结果显示,薄膜的压缩屈服强度越大,等效膜厚法得到的结果越准确;而在同一压痕深度下,较大的压头半径会带来较大的误差,当压痕深度较小时,薄膜的弹性模量受压头半径的影响较小.最后通过TiN/sapphire在球压头和三棱锥压头下的试验,验证了本方法.

参考文献

[1] Ranjana Saha;William D. Nix .Effects of the substrate on the determination of thin film mechanical properties by nanoindentation[J].Acta materialia,2002(1):23-38.
[2] Manhong Zhao;Yong Xiang;Jessica Xu;Nagahisa Ogasawara;Norimasa Chiba;Xi Chen .Determining mechanical properties of thin films from the loading curve of nanoindentation testing[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2008(21):7571-7580.
[3] Gan L;Ben-Nissan B .[J].Computational Materials Science,1997,8:273.
[4] Taljat B;Zacharia T;Haggag F M .[J].Journal of Materials Research,1997,12(04):965.
[5] Nayebi A;E1 Abdi R;Bartier O et al.[J].Mechanics of Materials,2002,34:243.
[6] Taljat B.;Kosel F.;Zacharia T. .New analytical procedure to determine stress-strain curve from spherical indentation data[J].International Journal of Solids and Structures,1998(33):4411-4426.
[7] Tang K C;Arnell R D .[J].Thin Solid Films,1999,355-356:263.
[8] Oliver W C;Pharr G M .[J].Journal of Materials Research,2004,19(01):3.
[9] King R B .[J].International Journal of Solids and Structures,1987,23:1657.
[10] Oliver W C;Pharr G M .[J].Journal of Materials Research,1992,7:1564.
[11] Field J S;Swain M V .[J].Journal of Materials Research,1993,8(02):297.
[12] Field JS.;Swain MV. .DETERMINING THE MECHANICAL PROPERTIES OF SMALL VOLUMES OF MATERIAL FROM SUBMICROMETER SPHERICAL INDENTATIONS[J].Journal of Materials Research,1995(1):101-112.
[13] Dorot hee D;Klaus R;Bridit S et al.[J].Materials Science and Engineering A:Structural Materials Properties Microstructure and Processing,2003,357:346.
[14] 赵翔,王峰会,王霞,刘志强.残余应力对固体氧化物燃料电池弹塑性性能的影响[J].无机材料学报,2011(04):393-398.
[15] Johnson K L.Contact Mechanics[M].Cambridge:Cambridge University Press,1985
[16] Rodriguez J;Garrido Maneiro M A .[J].Mechanics of Materials,2007,39:987.
[17] Swain M V;Wittling M .[J].Surface and Coatings Technology,1995,76-77:528.
[18] 弓满锋,乔生儒,张程煜,姬浩.薄膜弹性性能和膜厚对其弹性模量的影响[J].稀有金属材料与工程,2009(05):876-880.
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:
  • 1
    0%
  • 2
    0%
  • 3
    0%
  • 4
    0%
  • 5
    0%