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Laser joining of ceramics in liquid phase
H. Exner, A.-M. Reinecke,
P. Regenfuß, M. Nieher
Abstract:
The only way to join ceramic bodies- even with complicated geometries- effectively without
deterioration of their excellent properties is by a process with a liquid or a liquid like phase or
a diffusion bonding process.
We report the successful employment of laser beams for the joining of ceramic bodies to
each other and to metal specimens.
Our two-laser-beam welding method, an additive-free process in liquid phase, allows to join
bodies of fusible ceramics, e.g. of alumina parts, resulting in a strength of 85 % of the bulk
material.
Furthermore for the first time we present results on laser welding of alumina with niobium.
By this method parts of various shapes can be joined in only a few minutes without furnaces.
The achieved results in combination with the general advantages of laser material processing,
like narrow seams, high process flexibility, high productivity and a high degree of automation,
proof this technology ideally suited for industrial application.
Download the full paper here! (pdf file, 677KB) 
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