Microstructure of AL2O3/YAG/ZRO2 eutectic in situ composite prepared by laser floating zone melting

Kan Song, Jun Zhang, Xiaojiao Jia, Haijun Su, Lin Liu, Hengzhi Fu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Al2O3/YAG/ZrO2 eutectic in situ composite has been regarded as new generation of high temperature structural material due to its excellent performance even close to its melting point. The directionally solidified Al2O3/YAG/ZrO2 eutectic ceramics are prepared by recently developed Laser Floating Zone Melting (LFZM) apparatus in which a splitter mirror is used to obtain two beams with the same quality from one CO2 laser. With the two laser beams irradiate the sample from opposite directions, the sample is zone melted. The apparatus configuration and the solidification processing are described in detail. The solid/liquid interface morphology is studied and the mechanism of microstructure formation especially the characteristic of eutectic cellular is discussed. It is shown that YAG and ZrO2 phases play a leading role during the ternary eutectic growth. Meanwhile, the relationship between the solidification microstructure and the processing parameters are investigated.

Original languageEnglish
Title of host publicationExtraction and Processing Division - 2012 EPD Congress - Held During the TMS 2012 Annual Meeting and Exhibition
PublisherMinerals, Metals and Materials Society
Pages217-224
Number of pages8
ISBN (Print)9781118291405
DOIs
StatePublished - 2012
Event2012 EPD Congress - TMS 2012 Annual Meeting and Exhibition - Orlando, FL, United States
Duration: 11 Mar 201215 Mar 2012

Publication series

NameTMS Annual Meeting

Conference

Conference2012 EPD Congress - TMS 2012 Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando, FL
Period11/03/1215/03/12

Keywords

  • In-situ composite
  • Laser floating zone melting
  • Microstructure

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