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Cu/LaCrO 3 joining by local melt infiltration through laser cladding
Author(s) -
Wasilewski Eric,
Wolf Matthias,
Zhang Wei,
Ossenbrink Ralf,
Michailov Vesselin
Publication year - 2018
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.15767
Subject(s) - materials science , ceramic , infiltration (hvac) , wetting , porosity , composite material , inert gas , laser , cracking , oxide , cladding (metalworking) , welding , copper , inert , metallurgy , optics , physics , quantum mechanics
Direct bonding of copper and porous LaCrO 3 without an extra filler interlayer was successfully completed using local and fast Cu‐infiltration through laser cladding. This significantly reduced the susceptibility of the ceramic to cracking. A high‐speed camera investigation into the wetting and infiltration behavior of a Cu‐melt into LaCrO 3 with a porosity of ~63 vol% was performed. By adjusting the focal distance with a constant laser power of 300 W, the Cu‐melt was rapidly infiltrated into the ceramic preform in 10 seconds. This was completed under atmospheric air conditions, without added inert gas. The joining process developed can be used to fabricate ceramic/metal joints with targeted (micro‐) structure properties by adjusting the infiltrated melt and the infiltration depth, which would be suitable for many applications, such as multifunctional devices, solid oxide fuel cells or heating elements.