Preparation and fracture behavior of alumina platelet reinforced alumina-monazite composites

Yeong Kyeun Paek; Ender Suvaci; Gary L. Messing

doi:10.2320/matertrans.43.3262

Preparation and fracture behavior of alumina platelet reinforced alumina-monazite composites

Yeong Kyeun Paek, Ender Suvaci, Gary L. Messing

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Fracture behaviors were investigated in the laminated alumina composite ceramics. To improve the mechanical properties of alumina ceramics, templated grain growth (TGG) technique of α-Al₂O₃ platelet and LaPO₄ as a second phase were introduced. Textured samples were made by the lamination of green tapes through the tape-casting method, while random samples were made through the conventional powder processing method. Green compacts were sintered at 1600°C for 2 h in air. Fracture toughness was tested using indentation strength bending (ISB) method. Indentation on the sample surface was produced by Vickers indent at various loads. From the bending test, enhanced fracture toughness was found in the textured composite, compared to the random composite.

Original language	English (US)
Pages (from-to)	3262-3265
Number of pages	4
Journal	Materials Transactions
Volume	43
Issue number	12
DOIs	https://doi.org/10.2320/matertrans.43.3262
State	Published - Dec 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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title = "Preparation and fracture behavior of alumina platelet reinforced alumina-monazite composites",

abstract = "Fracture behaviors were investigated in the laminated alumina composite ceramics. To improve the mechanical properties of alumina ceramics, templated grain growth (TGG) technique of α-Al2O3 platelet and LaPO4 as a second phase were introduced. Textured samples were made by the lamination of green tapes through the tape-casting method, while random samples were made through the conventional powder processing method. Green compacts were sintered at 1600°C for 2 h in air. Fracture toughness was tested using indentation strength bending (ISB) method. Indentation on the sample surface was produced by Vickers indent at various loads. From the bending test, enhanced fracture toughness was found in the textured composite, compared to the random composite.",

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AU - Paek, Yeong Kyeun

AU - Suvaci, Ender

AU - Messing, Gary L.

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AB - Fracture behaviors were investigated in the laminated alumina composite ceramics. To improve the mechanical properties of alumina ceramics, templated grain growth (TGG) technique of α-Al2O3 platelet and LaPO4 as a second phase were introduced. Textured samples were made by the lamination of green tapes through the tape-casting method, while random samples were made through the conventional powder processing method. Green compacts were sintered at 1600°C for 2 h in air. Fracture toughness was tested using indentation strength bending (ISB) method. Indentation on the sample surface was produced by Vickers indent at various loads. From the bending test, enhanced fracture toughness was found in the textured composite, compared to the random composite.

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Preparation and fracture behavior of alumina platelet reinforced alumina-monazite composites

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