Title

Studies For Laser Densification Of Ceramic Coating

Authors

Authors

J. Cheng;A. Kar

Comments

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Abbreviated Journal Title

Mater. Manuf. Process.

Keywords

BEAM; Engineering, Manufacturing; Materials Science, Multidisciplinary

Abstract

A mathematical analysis describing the densification of ceramic coating processed with a moving TEM00 mode laser beam has been presented in this paper. Calculations of the depth of the heat affected zone in ZrO2, Al2O3 and TiO2 ceramic substances is performed by adopting a three-dimensional quasi-steady state heat conduction model based on the mechanism of viscous solid-phase densification. Also, a working range for these ceramics coating densification is predicted by varying the laser beam power, spot size and scanning velocity. The heat-affected layer in ZrO2 compact is found to be confined within a depth of 50 mu m from the surface and it is fully densified for grains of initial radius 5 mu m. A simple expression for temperature distribution is presented, which is found to provide sufficiently accurate estimates within a limited region around the laser spot.

Journal Title

Materials and Manufacturing Processes

Volume

12

Issue/Number

3

Publication Date

1-1-1997

Document Type

Article

Language

English

First Page

487

Last Page

503

WOS Identifier

WOS:A1997XE98000008

ISSN

1042-6914

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