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Phase Evolution and Diffusion Mechanism in Zn/Mg/Zn Coatings by PVD.

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Title: Phase Evolution and Diffusion Mechanism in Zn/Mg/Zn Coatings by PVD.
Authors: Liu, Xin1 (AUTHOR), Zhao, Xingyuan1 (AUTHOR) CisriZhaoxy@outlook.com, Liu, Qiuyuan1 (AUTHOR), Zhang, Ziyue1 (AUTHOR), Zhang, Qifu1 (AUTHOR)
Source: Journal of Materials Engineering & Performance. Jun2026, Vol. 35 Issue 22, p22240-22249. 10p.
Subjects: Physical vapor deposition, Solid-state phase transformations, Diffusion control, Surface coatings, Ab-initio calculations, Metal coating, Intermetallic compounds, Heat treatment
Abstract: This study investigates the diffusion behavior and intermetallic phase evolution in Zn/Mg/Zn multilayer coatings fabricated via physical vapor deposition (PVD). Post-deposition annealing at 250-350 °C was employed to drive the solid-state alloying process. Experimental characterization like SEM, EDS, XRD, etc reveals that significant interdiffusion occurs above 300 °C, transforming the distinct trilayer structure into a multiphase alloy coating. Crucially, first-principles calculations clarify the phase selection mechanism: while the Mg4Zn7 phase is thermodynamically favorable to nucleate, it fails to satisfy the Born criteria for shear stability. Consequently, Mg4Zn7 acts as a mechanically metastable kinetic precursor, rapidly transforming into the robust MgZn2 and Mg2Zn11 phases. These findings provide a theoretical framework for controlling phase evolution in high-performance Zn-Mg alloy coatings. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Label: Title
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  Data: Phase Evolution and Diffusion Mechanism in Zn/Mg/Zn Coatings by PVD.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Xin%22">Liu, Xin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Xingyuan%22">Zhao, Xingyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> CisriZhaoxy@outlook.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Qiuyuan%22">Liu, Qiuyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Ziyue%22">Zhang, Ziyue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qifu%22">Zhang, Qifu</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Engineering+%26+Performance%22">Journal of Materials Engineering & Performance</searchLink>. Jun2026, Vol. 35 Issue 22, p22240-22249. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Physical+vapor+deposition%22">Physical vapor deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Solid-state+phase+transformations%22">Solid-state phase transformations</searchLink><br /><searchLink fieldCode="DE" term="%22Diffusion+control%22">Diffusion control</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink><br /><searchLink fieldCode="DE" term="%22Ab-initio+calculations%22">Ab-initio calculations</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+coating%22">Metal coating</searchLink><br /><searchLink fieldCode="DE" term="%22Intermetallic+compounds%22">Intermetallic compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: This study investigates the diffusion behavior and intermetallic phase evolution in Zn/Mg/Zn multilayer coatings fabricated via physical vapor deposition (PVD). Post-deposition annealing at 250-350 °C was employed to drive the solid-state alloying process. Experimental characterization like SEM, EDS, XRD, etc reveals that significant interdiffusion occurs above 300 °C, transforming the distinct trilayer structure into a multiphase alloy coating. Crucially, first-principles calculations clarify the phase selection mechanism: while the Mg4Zn7 phase is thermodynamically favorable to nucleate, it fails to satisfy the Born criteria for shear stability. Consequently, Mg4Zn7 acts as a mechanically metastable kinetic precursor, rapidly transforming into the robust MgZn2 and Mg2Zn11 phases. These findings provide a theoretical framework for controlling phase evolution in high-performance Zn-Mg alloy coatings. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11665-026-13172-y
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      – Code: eng
        Text: English
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        PageCount: 10
        StartPage: 22240
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      – SubjectFull: Physical vapor deposition
        Type: general
      – SubjectFull: Solid-state phase transformations
        Type: general
      – SubjectFull: Diffusion control
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      – SubjectFull: Surface coatings
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      – SubjectFull: Ab-initio calculations
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      – SubjectFull: Metal coating
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      – SubjectFull: Intermetallic compounds
        Type: general
      – SubjectFull: Heat treatment
        Type: general
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      – TitleFull: Phase Evolution and Diffusion Mechanism in Zn/Mg/Zn Coatings by PVD.
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            NameFull: Liu, Xin
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            NameFull: Zhao, Xingyuan
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            NameFull: Liu, Qiuyuan
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            NameFull: Zhang, Ziyue
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              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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