Elastic properties of γ′-Fe4N probed by nanoindentation and ab initio calculation
Elastic properties of γ′-Fe4N probed by nanoindentation and ab initio calculation
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DOI：
10.1016/j.actamat.2011.12.051
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发表时间：
2012-03
期刊：
影响因子：
9.4
通讯作者：
Tetsuya Takahashi;J. Burghaus;D. Music;R. Dronskowski;J. Schneider
中科院分区：
文献类型：
--
作者：
Tetsuya Takahashi;J. Burghaus;D. Music;R. Dronskowski;J. Schneider
我们从实验和理论上研究了γ'-Fe4N的弹性性能，计算数据与文献实测数据之间的差异高达31%。分别采用反应磁控溅射技术和两步氨解反应合成了纯相γ'-Fe4N薄膜和块状样品。通过纳米压痕测得弹性模量分别为157±11和159±17GPa。对于块状 γ'-Fe4N 的纳米压痕，采用结构顺应性校正来消除孔隙率和安装的影响。这些测量的弹性模量与从头计算得到的 162GPa 值一致。
We studied the elastic properties of γ′-Fe4N experimentally and theoretically, as the difference between calculated and measured literature data is up to 31%. A phase-pure γ′-Fe4N thin film and a bulk-like sample were synthesized using a reactive magnetron sputtering technique and a two-step ammonolysis reaction, respectively. The elastic moduli were measured to be 157±11 and 159±17GPa, respectively, by nanoindentation. For nanoindentation on bulk-like γ′-Fe4N, the correction of structural compliance was applied to remove the influence of the porosity as well as of mounting. These measured elastic moduli are consistent with the value of 162GPa obtained from ab initio calculations.