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

doi:10.1111/j.1744-7402.2009.02420.x

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 journal › Article

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 language	English
Pages (from-to)	163-171
Number of pages	9
Journal	International Journal of Applied Ceramic Technology
Volume	8
Issue number	1
DOIs	https://doi.org/10.1111/j.1744-7402.2009.02420.x
Publication status	Published - Jan 2011

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Parry, J. P., Shephard, J. D., Hand, D. P., Moorhouse, C., Jones, N., & Weston, N. (2011). Laser micromachining of zirconia (Y-TZP) ceramics in the picosecond regime and the impact on material strength. International Journal of Applied Ceramic Technology, 8(1), 163-171. https://doi.org/10.1111/j.1744-7402.2009.02420.x

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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. {\textcopyright} 2009 The American Ceramic Society.",

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AU - Jones, Nick

AU - Weston, Nick

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AB - 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.

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