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Ultrafast laser welding of ceramics

Welding of ceramics is a key missing component in modern manufacturing. Current methods cannot join ceramics in proximity to temperature-sensitive materials like polymers and electronic components. We introduce an ultrafast pulsed laser welding approach that relies on focusing light on interfaces to...

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Published in:Science (American Association for the Advancement of Science) 2019-08, Vol.365 (6455), p.803-808
Main Authors: Penilla, E H, Devia-Cruz, L F, Wieg, A T, Martinez-Torres, P, Cuando-Espitia, N, Sellappan, P, Kodera, Y, Aguilar, G, Garay, J E
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container_title Science (American Association for the Advancement of Science)
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creator Penilla, E H
Devia-Cruz, L F
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Martinez-Torres, P
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Aguilar, G
Garay, J E
description Welding of ceramics is a key missing component in modern manufacturing. Current methods cannot join ceramics in proximity to temperature-sensitive materials like polymers and electronic components. We introduce an ultrafast pulsed laser welding approach that relies on focusing light on interfaces to ensure an optical interaction volume in ceramics to stimulate nonlinear absorption processes, causing localized melting rather than ablation. The key is the interplay between linear and nonlinear optical properties and laser energy-material coupling. The welded ceramic assemblies hold high vacuum and have shear strengths comparable to metal-to-ceramic diffusion bonds. Laser welding can make ceramics integral components in devices for harsh environments as well as in optoelectronic and/or electronic packages needing visible-radio frequency transparency.
doi_str_mv 10.1126/science.aaw6699
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source American Association for the Advancement of Science
subjects Ablation
Automobile industry
Bonding strength
Ceramic bonding
Ceramics
Diffusion welding
Electronic components
Fractures
Harsh environments
High temperature
High vacuum
Integrals
Interfaces
Laser beam welding
Lasers
Manufacturing
Optical properties
Optoelectronic devices
Polymers
Pulsed lasers
Steel products
Ultrafast lasers
Vacuum
Welded joints
Welding
title Ultrafast laser welding of ceramics
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