Processing and mechanical behavior of Al{sub 2}O{sub 3}/ZrO{sub 2} nanocomposites

Journal Article · Sat Jan 31 23:00:00 EST 1998 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(97)00221-3· OSTI ID:605690

Liu, G J; Qiu, H B; Guo, J K ^[1]; Todd, R; Brook, R J ^[2]

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1. Chinese Academy of Sciences, Shanghai (China). Shanghai Inst. of Ceramics
2. Univ. of Oxford (United Kingdom). Dept. of Materials

Alumina-zirconia ceramic nanocomposites were produced from nanoscale Y{sub 2}O{sub 3}-stabilized ZrO{sub 2}, and nanoscale Al{sub 2}O{sub 3} powders. The effect of ZrO{sub 2} content on the densification, sintering behavior, mechanical properties, and microstructure of the composites was investigated. The results show that ZrO{sub 2} particles inhibit the densification and also regard the matrix alumina grain growth. Y{sub 2}O{sub 3}-stabilized ZrO{sub 2} powder in the Al{sub 2}O{sub 3}/ZrO{sub 2} nanocomposites is a strengthening and toughening agent, where the maximum strength and toughness of the composites are 1 GPa and 10 MPa {center_dot} m{sup 1/2}, respectively.

• OSTI ID: 605690
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 2 Vol. 33; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
COMPOSITE MATERIALS
FRACTURE PROPERTIES
MECHANICAL PROPERTIES
MICROSTRUCTURE
SINTERING
SYNTHESIS
YTTRIUM OXIDES
ZIRCONIUM OXIDES