Solidification Behavior of Lined Al2O3-ZrO2 Multiphase Ceramics in SHS Composite Pipes

Gui Bo Yu; Feng He Tao; Shu Hai Wang; Li Jun Cao; Qiao Ma

doi:10.4028/www.scientific.net/AMR.905.109

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 905Solidification Behavior of Lined Al2O3-ZrO2...

Solidification Behavior of Lined Al₂O₃-ZrO₂ Multiphase Ceramics in SHS Composite Pipes

Abstract:

Hypoeutectic and hypereutectic Al₂O₃+ZrO2 multiphase ceramic-lined composite pipes were produced by using the gravitational separation self-propagate high-temperature (SHS) process. The microstructure of the ceramics was observed by means of SEM and EPMA. The multi-phase ceramics base consists of lamellar or rod-like eutecticum of ZrO₂ with Al₂O₃, and Al₂O₃ dendrite is distributed between (Al₂O₃+ZrO₂) eutecticum and the ZrO₂ is distributed on boundary area between (Al₂O₃+ZrO₂) eutecticum in appearance of band and particle alone in the hypoeutectic multi-phase ceramics, and ZrO₂ is distributed between (Al₂O₃+ZrO₂) eutecticum in appearance of snowflake-like or fishbone-like in hypereutectic multi-phase ceramics. On the basis of combustion synthesis, material thermodynamics, metallurgy dynamics and ceramics materials theory, the formation of microstructure mechanism have been systematically investigated.

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Periodical:

Advanced Materials Research (Volume 905)

Pages:

109-112

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.905.109

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Online since:

April 2014

Authors:

Gui Bo Yu*, Feng He Tao, Shu Hai Wang, Li Jun Cao, Qiao Ma

Keywords:

Al₂O₃-ZrO₂ Multiphase Ceramics, SHS, Solidification Behavior

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