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Volume 16
Issue 5
10.3390/mi16050538
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Article

Ultra-Short-Pulse Laser Welding of Glass to Metal with a Shear Strength Above 50 MPa

by
Lukas Günther
1,2,*,
Jens Ulrich Thomas
2,
Jens Hermann
2,
Axel Ohlinger
2 and
Dominique de Ligny
1,*
1
Department of Materials Science and Engineering, Institut für Glas und Keramik, Friedrich-Alexander-Universitat Erlangen-Nürnberg (FAU), Martensstrasse 5, 91058 Erlangen, Germany
2
SCHOTT AG, Hattenbergstraße 10, 55122 Mainz, Germany
*
Authors to whom correspondence should be addressed.
Micromachines 2025, 16(5), 538; https://doi.org/10.3390/mi16050538
Submission received: 27 March 2025 / Revised: 24 April 2025 / Accepted: 26 April 2025 / Published: 30 April 2025
(This article belongs to the Special Issue Advancement of Laser Technology from Materials Processing to Nano/Micro Fabrications)
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Abstract

We report an ultra-short-pulse laser welding process that allows one to consistently weld Borofloat® 33 glass to aluminum with a shear strength above 50 MPa. We explored the morphology of the welding seam and quantified the quality of the bonding by statistically determining the shear strength with more than 30 samples. The results of the shear strength tests indicate that the intrinsic shear strength of the aluminum serves as the upper limit of the glass-to-metal bond.
Keywords: laser; ultra-short-pulse; welding; glass; metal; bonding laser; ultra-short-pulse; welding; glass; metal; bonding

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MDPI and ACS Style

Günther, L.; Thomas, J.U.; Hermann, J.; Ohlinger, A.; de Ligny, D. Ultra-Short-Pulse Laser Welding of Glass to Metal with a Shear Strength Above 50 MPa. Micromachines 2025, 16, 538. https://doi.org/10.3390/mi16050538

AMA Style

Günther L, Thomas JU, Hermann J, Ohlinger A, de Ligny D. Ultra-Short-Pulse Laser Welding of Glass to Metal with a Shear Strength Above 50 MPa. Micromachines. 2025; 16(5):538. https://doi.org/10.3390/mi16050538

Chicago/Turabian Style

Günther, Lukas, Jens Ulrich Thomas, Jens Hermann, Axel Ohlinger, and Dominique de Ligny. 2025. "Ultra-Short-Pulse Laser Welding of Glass to Metal with a Shear Strength Above 50 MPa" Micromachines 16, no. 5: 538. https://doi.org/10.3390/mi16050538

APA Style

Günther, L., Thomas, J. U., Hermann, J., Ohlinger, A., & de Ligny, D. (2025). Ultra-Short-Pulse Laser Welding of Glass to Metal with a Shear Strength Above 50 MPa. Micromachines, 16(5), 538. https://doi.org/10.3390/mi16050538

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