Phase formation and thermal stability of amorphous ZrNbCrMo thin films

被引：6

作者：

Kaplan M. ^{[1
]}

Pálsson G.K. ^{[1
]}

Holzapfel D.M. ^{[2
]}

Schneider J.M. ^{[2
]}

Hjörvarsson B. ^{[1
]}

机构：

[1] Department of Physics and Astronomy, Uppsala University

[2] Materials Chemistry, RWTH Aachen University

来源：

Journal of Non-Crystalline Solids: X | 2021年 / 9-10卷

关键词：

Amorphous alloys; Calphad; Mixing enthalpy; Refractory metal; Thermal stability; ZrNbCrMo;

D O I：

10.1016/j.nocx.2021.100061

中图分类号：

学科分类号：

摘要：

We demonstrate that the atomic size mismatch, δ, can be used to predict the boundary between amorphous and crystalline phase formation ranges in ZrNbCrMo thin films. The concentrations of all alloying elements are varied systematically, which induces a change in δ. The formation of an amorphous phase is observed by x-ray diffraction for δ ≥ 6.9%, whereas crystallization is detected for δ ≤ 6.9%. The crystallization temperature increases from 575 to 625 ∘C by increasing Nb + Mo content from 10 to 34 at.%, and decreases to 475 ∘C upon further additions of Nb + Mo. Calphad calculated liquidus temperatures, Tl, increases monotonously and δ decreases monotonously with Nb and Mo additions. Consequently, δ and Tl do not serve as predictors for thermal stability of ZrNbCrMo thin films. © 2021 The Author(s)

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