Laser processing of advanced ceramics

J. Narayan, R. K. Singh, K. Jagannadham

Research output: Contribution to conferencePaperpeer-review

Abstract

Pulsed excimer laser radiation has been used to induce mixing of nickel overlayers on silicon carbide and silicon nitride samples. A detailed examination of mixed layers has been carried out using transmission electron microscopy and Rutherford back scattering. The laser energy density was varied from 0.4 Jcm-2 to 2.0 Jcm-2 to optimize the formation of mixed layers. Heat flow calculations have been performed to simulate the effects of intense latter irradiation in causing melting and rapid solidification of the mixed layers. Three mechanisms of improvement in fracture strength and toughness of laser surface-modified ceramic materials are described in this paper.

Original languageEnglish
Pages1-24
Number of pages24
StatePublished - 1988
Externally publishedYes
Event1988 Intersociety Symposium on Machining of Advanced Ceramic Materials and Components - Chicago, IL, USA
Duration: 27 Nov 19882 Dec 1988

Conference

Conference1988 Intersociety Symposium on Machining of Advanced Ceramic Materials and Components
CityChicago, IL, USA
Period27/11/882/12/88

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