Metal finishing Q&As since 1989
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Laser marking cracks ceramic tools
January 12, 2010
We are facing failure on ceramic (ZTP zirconia) tools: they are to be subjected to laser marking and the marking always generates a network of microcracks on the treated surfaces (visible starting from
500X magnification by SEM microscopy); then the items are particularly prone to rupture just in correspondence of the laser marking sites. The same tools from competitors have a laser marking which is lighter in color and appearance and above all free from cracks and defects.
Are there some guidelines for the laser marking on zirconia based products?
R&D technician - Carpi, Italy
Just follow physics. The higher the energy, the faster the engraving, the less heat transfer, the less distortion, the less cracking.
Guillermo MarrufoMonterrey, NL, Mexico
January 30, 2010
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