Densification and mechanical properties of sintered Al2 O3 -Y3 Al5 O12 ceramic composite

Autores

  • 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 Instituto Militar de Engenharia (IME)
  • Ricardo de Freitas Cabral Centro Universitário de Volta Redonda (UNIFOA)
  • Claudinei dos Santos Centro Universitário de Volta Redonda (UNIFOA), Universidade do Estado do Rio de Janeiro (UERJ)

DOI:

https://doi.org/10.47385/cadunifoa.v9.n1%20(Esp.).1197

Palavras-chave:

Al2 O3 -YAG composites, Pressing, Sintering, Hardness

Resumo

In this work, Al2 O3 -Y3 Al5 O12 ceramic composites were developed with different proportions of Al2 O3 -Y2 O3 , which were mixed and compacted at different pressures of 40MPa to 100MPa, being consequently sintered at 1600º C-2h. The sintered samples were characterized by X-ray diffraction presenting α−Al2 O3 and Y3 Al5 O12 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 Al2 O3 -Y2 O3 having the composition with levels of 20 and 36.5wt.%, respectively.

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Referências

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Publicado

30-03-2017

Como Citar

PANETO, F. J.; PEREIRA, J. L.; OLIVEIRA, J. de L.; FILHO, E. de J.; SILVA, L. A. da; LIMA, E. de S.; CABRAL, R. de F.; SANTOS, C. dos. Densification and mechanical properties of sintered Al2 O3 -Y3 Al5 O12 ceramic composite. Cadernos UniFOA, Volta Redonda, v. 9, n. 1 (Esp.), p. 55–60, 2017. DOI: 10.47385/cadunifoa.v9.n1 (Esp.).1197. Disponível em: https://revistas.unifoa.edu.br/cadernos/article/view/1197. Acesso em: 28 jan. 2023.

Edição

Seção

Especial Mestrado em Materiais

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