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Controlled Evolution of Morphology and Microstructure in Laser Interference-Structured Zirconia
Article first published online: 14 MAY 2008
DOI: 10.1111/j.1551-2916.2008.02449.x
© 2008 The American Ceramic Society
Additional Information
How to Cite
Daniel, C., Armstrong, B. L., Howe, J. Y. and Dahotre, N. B. (2008), Controlled Evolution of Morphology and Microstructure in Laser Interference-Structured Zirconia. Journal of the American Ceramic Society, 91: 2138–2142. doi: 10.1111/j.1551-2916.2008.02449.x
Publication History
- Issue published online: 8 JUL 2008
- Article first published online: 14 MAY 2008
- Manuscript No. 23605. Received August 14, 2007; approved March 10, 2008.
- Abstract
- Article
- References
- Cited By
Tape-cast pseudo-cubic zirconia pellets were surface irradiated by two coherent interfering high-power short-pulse Nd:YAG laser beams. The interfering beams of the third harmonic with a wavelength of 355 nm of a 2.5-ns Q-switched laser produced a line-like intensity distribution with a periodic distance of 3.3 μm due to the selected angle between the beams. The resulting nonuniform surface heating produced a microstructure consisting of ultrafine-grained zirconia with a grain size of about 10 nm within the top 100–200 nm depth of the treated surface region due to the high cooling rates during short-pulse laser processing (up to 1010 K/s). The surface morphology closely followed the microperiodic heat treatment provided by the interfering laser beams. The pore size distribution within the periodic surface morphology ranged from a few nanometers to a maximum of half of the periodic line distances.