Published December 15, 2007
| Version v1
Journal article
Laser beam operation mode dependent grain morphology of alumina
- 1. Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States)
Description
The effect of laser beam operation mode on transition of grain morphology was studied during surface modification of alumina ceramic. A 4 kW HL 4006D continuous wave Nd:yttrium-aluminum-garnet (YAG) laser and a JK 701 pulsed Nd:YAG laser were employed to conduct surface modification of alumina. The laser beam operated in continuous wave mode generated faceted grain structure on the surface of the ceramic while the beam operated in pulsed mode produced nonfaceted grain structure. Such transition in grain morphology is mainly attributed to different levels of undercooling which is a function of cooling rates encountered in two different modes of laser operation
Additional details
Identifiers
- DOI
- 10.1063/1.2825403;
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 102
- Journal Issue
- 12
- Journal Page Range
- p. 123105-123105.6
- ISSN
- 0021-8979
- CODEN
- JAPIAU
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39074771
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM OXIDES; CERAMICS; CRYSTAL STRUCTURE; LASER MATERIALS; MICROSTRUCTURE; MORPHOLOGY; NEODYMIUM LASERS; SUBCOOLING; SURFACE TREATMENTS
- Descriptors DEC
- ALUMINIUM COMPOUNDS; CHALCOGENIDES; COOLING; LASERS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; SOLID STATE LASERS
Optional Information
- Notes
- (c) 2007 American Institute of Physics