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Experimental Study on Laser-Controlled Explosive Welding of Microscale Metallic Foils Driven by Energetic Materials.

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Title: Experimental Study on Laser-Controlled Explosive Welding of Microscale Metallic Foils Driven by Energetic Materials.
Authors: Ye, Xiaojun1,2 (AUTHOR), Ye, Dongxian1,2 (AUTHOR), Fu, Yanshu2,3 (AUTHOR), Zhao, Penglong2,4 (AUTHOR), Xiao, Xianfeng1,3 (AUTHOR), Shi, Daomin2,4 (AUTHOR) sdm915@163.com, Zhang, Rui2,3 (AUTHOR)
Source: Materials (1996-1944). Feb2026, Vol. 19 Issue 3, p527. 11p.
Subjects: Explosive welding, Metallic thin films, Welding, Propellants, Metallic bonds, Microelectronic packaging
Abstract: In response to the challenge of achieving highly reliable interface fabrication in the fields of microelectronics and micro-electromechanical system (MEMS) packaging, this study harnesses the superior characteristics of solid-state bonding inherent in explosive welding (EXW) technology. This study investigates the precise EXW of milligram-scale metallic foils by employing focused laser energy to control the explosion behavior of liquid energetic materials, thereby generating shockwaves that induce high-velocity oblique collisions between metallic foils and base plates. Laser-focused energy was utilized to regulate energetic materials for conducting precision EXW experiments on Al/Cu couples. The technical feasibility and interfacial quality of this method for fabricating Al/Cu bonding interfaces were systematically evaluated through in situ observation of the dynamic welding process, comprehensive analysis of interfacial microstructures, and numerical simulations. The results reveal distinct Al/Cu elemental diffusion at the bonding interface, confirming the technical viability of the approach. However, an unloading rebound phenomenon is observed at the interface, which is inherently associated with the dynamic impact process, indicating the need for further optimization in the precise control of impact loading. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI 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.)
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Header DbId: egs
DbLabel: Engineering Source
An: 191586754
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Experimental Study on Laser-Controlled Explosive Welding of Microscale Metallic Foils Driven by Energetic Materials.
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  Data: <searchLink fieldCode="AR" term="%22Ye%2C+Xiaojun%22">Ye, Xiaojun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ye%2C+Dongxian%22">Ye, Dongxian</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fu%2C+Yanshu%22">Fu, Yanshu</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Penglong%22">Zhao, Penglong</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Xianfeng%22">Xiao, Xianfeng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shi%2C+Daomin%22">Shi, Daomin</searchLink><relatesTo>2,4</relatesTo> (AUTHOR)<i> sdm915@163.com</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Rui%22">Zhang, Rui</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Feb2026, Vol. 19 Issue 3, p527. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Explosive+welding%22">Explosive welding</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+thin+films%22">Metallic thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Welding%22">Welding</searchLink><br /><searchLink fieldCode="DE" term="%22Propellants%22">Propellants</searchLink><br /><searchLink fieldCode="DE" term="%22Metallic+bonds%22">Metallic bonds</searchLink><br /><searchLink fieldCode="DE" term="%22Microelectronic+packaging%22">Microelectronic packaging</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In response to the challenge of achieving highly reliable interface fabrication in the fields of microelectronics and micro-electromechanical system (MEMS) packaging, this study harnesses the superior characteristics of solid-state bonding inherent in explosive welding (EXW) technology. This study investigates the precise EXW of milligram-scale metallic foils by employing focused laser energy to control the explosion behavior of liquid energetic materials, thereby generating shockwaves that induce high-velocity oblique collisions between metallic foils and base plates. Laser-focused energy was utilized to regulate energetic materials for conducting precision EXW experiments on Al/Cu couples. The technical feasibility and interfacial quality of this method for fabricating Al/Cu bonding interfaces were systematically evaluated through in situ observation of the dynamic welding process, comprehensive analysis of interfacial microstructures, and numerical simulations. The results reveal distinct Al/Cu elemental diffusion at the bonding interface, confirming the technical viability of the approach. However, an unloading rebound phenomenon is observed at the interface, which is inherently associated with the dynamic impact process, indicating the need for further optimization in the precise control of impact loading. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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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RecordInfo BibRecord:
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        Value: 10.3390/ma19030527
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      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 527
    Subjects:
      – SubjectFull: Explosive welding
        Type: general
      – SubjectFull: Metallic thin films
        Type: general
      – SubjectFull: Welding
        Type: general
      – SubjectFull: Propellants
        Type: general
      – SubjectFull: Metallic bonds
        Type: general
      – SubjectFull: Microelectronic packaging
        Type: general
    Titles:
      – TitleFull: Experimental Study on Laser-Controlled Explosive Welding of Microscale Metallic Foils Driven by Energetic Materials.
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          Name:
            NameFull: Ye, Xiaojun
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            NameFull: Ye, Dongxian
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            NameFull: Fu, Yanshu
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            NameFull: Zhao, Penglong
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            NameFull: Xiao, Xianfeng
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            NameFull: Shi, Daomin
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            NameFull: Zhang, Rui
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            – D: 01
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
          Identifiers:
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              Value: 19961944
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              Value: 19
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            – TitleFull: Materials (1996-1944)
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