HARDNESS DETERMINATION OF AU THIN FILM BY NANOINDENTATION TECHNIQUE — A COMPARATIVE STUDY ON VARIOUS CHARACTERIZING METHODS
The purpose of this paper is to find a reliable method for determining the hardnesses of soft metallic thin films on hard substrates. Based on the nanoindention experimental data for a 504 nm Au thin film deposited on glass substrate system, several possible methods are applied and the results come from them are compared. The results reveal that the Oliver-Pharr method is strongly influenced by the material pile-up behavior and substrate effect that leads to an erroneously overestimated hardness. However, the methods based on traditional area calculations by SEM image, work of indentation principles during the indentation cycle and constant modulus assumption calculations all can effectively avoid the effect of pile-up and minimize that of substrate. Among three, the results from indentation method are obviously much higher than those from other two. Hence we argue that the results by SEM image method and constant modulus assumption calculations are more reasonable.
nanoindentation mechanical properties hardness thin metallic film Au
Xiangyang Zhou Zhuangde Jiang Hairong Wang
Institute of Precision Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P.R. China Institute of Precision Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P.R. China;Sta Institute of Precision Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, P.R. China;Ins
国际会议
海南三亚
英文
2007-01-10（万方平台首次上网日期，不代表论文的发表时间）