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Surface treatments of Al2O3-ceramics by CO2-Lasers

✍ Scribed by Dipl.-Ing. S. Z. Lee; Prof. Dr. K.-H. Zum Gahr

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 999 KB
Volume: 23
Category: Article
ISSN: 0933-5137
DOI: 10.1002/mawe.19920230406

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Laser surface melting of porous and dense compact Al~2~O~3~ ceramics was studied by using a wide range of laser power densities and different preheating temperatures. Tendency for cracking and depth of melted zone were measured as a function of operating conditions.

The experiments showed that grain growth in the laser treated zone could not be avoided but tendency for cracking was substantially reduced by optimizing laser parameters and preheating procedure. Surfaces of porous ceramic were successfully sealed by infrared laser light.

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