Densification and Mechanical Properties of sintered Al2O3-Y3Al5O12 ceramic composite

Autores

  • Claudinei dos Santos Centro Universitário de Volta Redonda - UniFOA UERJ - Universidade do Estado do Rio de Janeiro
  • Flavio Jose Paneto Centro Universitário de Volta Redonda - UniFOA
  • Joaquim Lopes Pereira Centro Universitário de Volta Redonda - UniFOA
  • Jean de Lima Oliveira Centro Universitário de Volta Redonda - UniFOA
  • Edson de Jesus Filho Centro Universitário de Volta Redonda - UniFOA
  • Leandro Anselmo da Silva Centro Universitário de Volta Redonda - UniFOA
  • Eduardo de Sousa Lima IME - Instituto Militar de Engenharia
  • Ricardo de Freitas Cabral Centro Universitário de Volta Redonda - UniFOA

DOI:

https://doi.org/10.47385/cadunifoa.v1.n1.234

Palavras-chave:

Al2O3-YAG composites, pressing, sintering, hardness

Resumo

In this work, Al2O3-Y3Al5O12 ceramic composites were developed with different proportions of Al2O3-Y2O3, which were mixed and compacted at different pressures of 40MPa to 100MPa, being consequently sintered at 160°C-2h. The sintered samples were characterized by X-ray diffraction presenting a-Al2O3 and Y3Al5O12 as crystalline phases. Samples with relative densities ranging from 78 to 80% and 87 to 91% were obtained depending on the composition and the compaction pressure used.  The hardness values obtained were of 1010 to 1080HV and 370-470HV, for mixes Al2O3-Y2O3 having the composition with levels of 20 and 36.5wt.%, respectively.

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Referências

P. Palmero, A. Simone, C. Esnouf, G. Fantozzi, and L. Montanaro, Comparasion among different sintering routes for preparing alumina-YAG nanocomposites, Journal of European Ceramic Society. 26 (2006) 941-947.

S. Ochiai, M. Hojo, A. Mitani, N. Nakagawa, S. Sakata, K. Sato, T. Takahashi, T. Ueda, Y. Waku, Deformation and Fracture Behavior of an Al2O3/YAG Composite from Room Temperature to 2023 K, Composites Science and Technology. 61 (2001) 2117-2128.

T. A. Parthasarathy, T. Mah, L. E. Matson, Processing, Structure and Properties of Alumina-YAG Eutectic Composites, Journal of Ceramic Processing Research. 5 (2004) 380-390.

Y. Waku, N. Nakagawa, T. Wakamoto, H. Otsubo, K. Shimizu, Y. Kohtoku, High Temperature Strength and Thermal Stability of Unidirectionally Solidified Al2O3/YAG Eutectic Composite, Journal of Materials Science. 33 (1998) 1217-1225.

W. Q. Li, L. Gao, Processing, Microstructure and Mechanical Properties of 25 vol% YAG-Al2O3 Nanocomposites, Nano Structured Materials. 11 (1999) 1073-1080.

H. Wang, L. Gao, Preparation and Microstructure of Polycrystalline Al2O3–YAG Composites, Ceramics International. 27 (2001) 721-723.

A. P. O. Santos,. L. M.Itaboray,; Sousa Lima E. ; C.; Santos, R. F. Cabral, Development and characterization of the Al2O3-YAG ceramic composites, Materials Science Forum, (2013), in press.

Powder Diffraction File Inorganics Phases: alphabetical index, inorganics phases – JCPDS, International Centre for Diffraction Data, (2000).

ASTM: C 1327-99. Standard test method for Vickers indentation hardness of advanced ceramics, (1999) 1-8.

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Publicado

10-06-2014

Como Citar

DOS SANTOS, Claudinei; PANETO, Flavio Jose; PEREIRA, Joaquim Lopes; OLIVEIRA, Jean de Lima; FILHO, Edson de Jesus; DA SILVA, Leandro Anselmo; LIMA, Eduardo de Sousa; CABRAL, Ricardo de Freitas. Densification and Mechanical Properties of sintered Al2O3-Y3Al5O12 ceramic composite. Cadernos UniFOA, Volta Redonda, v. 1, n. 1, p. 55–60, 2014. DOI: 10.47385/cadunifoa.v1.n1.234. Disponível em: https://unifoa.emnuvens.com.br/cadernos/article/view/234. Acesso em: 25 dez. 2024.

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Especial Mestrado em Materiais

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