Mechanical properties of CoCrCuFeNi multi-principal element alloy thin films on Kapton substrates
Mechanical properties of CoCrCuFeNi multi-principal element alloy thin films on Kapton substrates
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DOI：
10.1016/j.surfcoat.2020.126474
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发表时间：
2020-11
影响因子：
5.4
通讯作者：
C. H. Li;R. Dedoncker;L. W. Li;F. Sedghgooya;F. Zighem;V. Ji;D. Depla;P. Djemia;D. Faurie
中科院分区：
文献类型：
--
作者：
C. H. Li;R. Dedoncker;L. W. Li;F. Sedghgooya;F. Zighem;V. Ji;D. Depla;P. Djemia;D. Faurie
研究了磁控溅射法在Kapton衬底上制备的CoCrCuFeNi薄膜的力学性能。通过共聚焦显微镜测量拉伸试验过程中允许多裂纹和随后的屈曲这些薄膜的分析。不同的多裂纹模型（Beuth，夏和哈钦森，弗兰克）允许分析的破碎实验，并确定断裂韧性。它随薄膜厚度增加而增加，因此似乎不是材料的固有特性，而是与薄膜的纳米晶体性质有关。最后，CoCrCuFeNi薄膜和Kapton之间的粘附力被发现是可比的其他金属/聚合物系统。
The mechanical properties of CoCrCuFeNi thin films deposited by magnetron sputtering on Kapton substrates are studied in this paper. Measurements by confocal microscopy during tensile tests allow the analysis of multi-cracking and subsequent buckling of these thin films. Different multi-cracking models (Beuth, Xia & Hutchinson, Franck) allow to analyze the fragmentation experiments and to determine the fracture toughness. It increases with the film thickness and thus does not seem to be an intrinsic property of the material, but linked to the nanocrystalline nature of the films. Finally, the adhesion between CoCrCuFeNi thin films and Kapton is found to be comparable to that of other metal/polymer systems.