Nd-YAG Laser Nitriding of t-Zirconia
DSpace at IIT Bombay
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Title |
Nd-YAG Laser Nitriding of t-Zirconia
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Creator |
KATHURIA, YP
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Subject |
laser
raman microscopy t-zro(2) zrn |
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Description |
Surface nitriding of yttria (Y(2)O(3)) stabilized tetragonal zirconia (t-ZrO(2)) has been performed using the pulsed Nd-YAG laser irradiation in the nitrogen atmosphere. The results show modification of the crystallographic structure between the original t-ZrO(2) and the treated one. Nitrogen atoms enter in ZrO(2) substituting oxygen atoms in the network. X-Ray diffraction and Raman spectra show an efficient transformation of the t-ZrO(2) at the surface that exhibits typical yellow-gold color of ZrN with high hardness and wear resistance. The hardness measured with Vickers indenter yields a high value of 1410 HV. Nitriding is accompanied by the formation of a few micron thick gradient layer of ZrN structure on the top and a partial transformation of t-ZrO(2) into cubic zirconia (c-ZrO(2)) beneath deep in the bulk due to nitrogen concentration gradient.
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Publisher |
WILEY-V C H VERLAG GMBH
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Date |
2011-09-01T18:37:14Z
2011-12-26T12:59:45Z 2011-12-27T05:52:34Z 2011-09-01T18:37:14Z 2011-12-26T12:59:45Z 2011-12-27T05:52:34Z 2007 |
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Type |
Article
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Identifier |
PLASMA PROCESSES AND POLYMERS, 4(), S707-S710
1612-8850 http://dx.doi.org/10.1002/ppap.200731802 http://dspace.library.iitb.ac.in/xmlui/handle/10054/12842 http://hdl.handle.net/10054/12842 |
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Language |
en
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