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Nitriding of Zirconia by Irradiation with NdrYAG Laser Beam

Published online by Cambridge University Press:  15 February 2011

S. Fujitsu
Affiliation:
Department of Materials Science and Ceramic Technology, Shonan Institute of Technology, Tsujido-Nishikaigan, Fujisawa, Kanagawa 251, Japan
M. Sawai
Affiliation:
Department of Materials Science and Ceramic Technology, Shonan Institute of Technology, Tsujido-Nishikaigan, Fujisawa, Kanagawa 251, Japan
K. Kawamura
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
H. Hosono
Affiliation:
Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 227, Japan
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Abstract

The surface of partially stabilized zirconia ceramics was irradiated by a Nd:YAG laser in various atmospheres. Zirconia strongly absorbed YAG's laser beam and changed its chemistry and microstructure. The change of color of zirconia into gold was due to the formation of zirconium nitride (ZrN) observed on the irradiated surface in air, nitrogen or ammonia, which was confirmed by X-ray diffraction and secondary ion mass spectroscopy. The observed ZrN phase was 10-20 um in thickness at the irradiated area by the direct beam. The adhesion between formed ZrN and YSZ substrate was very weak.

Type
Research Article
Copyright
Copyright © Materials Research Society 1996

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References

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