Laser micromachining of zirconia (Y-TZP) ceramics in the picosecond regime and the impact on material strength

Jonathan P. Parry, Jonathan D. Shephard, Duncan P. Hand, Colin Moorhouse, Nick Jones, Nick Weston

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The capabilities of a high average power picosecond laser are assessed for micromachining yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) in its hard state. Laser machining of this material presents an attractive alternative to conventional machining techniques when precision customized parts are required due to the difficulty in machining Y-TZP in its hard state. Compared with previous nanosecond work the picosecond laser enables similar micromachining to be carried out at the same rate but with a superior surface finish and with no evidence of surface cracking. Strength measurements have been carried out using a four-point bend test rig and confirm that the improvement in surface quality translates to higher strength in machined components. © 2009 The American Ceramic Society.

Original languageEnglish
Pages (from-to)163-171
Number of pages9
JournalInternational Journal of Applied Ceramic Technology
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 2011

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