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.

Downloads

Não há dados estatísticos.

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 Al2 O3 /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 AluminaYAG 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 Al2 O3 /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-Al2 O3 Nanocomposites, Nano Structured Materials. 11 (1999) 1073-1080.

H. Wang, L. Gao, Preparation and Microstructure of Polycrystalline Al2 O3 –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 Al2 O3 -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.

Downloads

Publicado

30-03-2017

Como Citar

PANETO, Flavio Jose; PEREIRA, Joaquim Lopes; OLIVEIRA, Jean de Lima; FILHO, Edson de Jesus; SILVA, Leandro Anselmo da; LIMA, Eduardo de Sousa; CABRAL, Ricardo de Freitas; SANTOS, Claudinei 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: 22 nov. 2024.

Edição

Seção

Especial Mestrado em Materiais

Artigos Semelhantes

Você também pode iniciar uma pesquisa avançada por similaridade para este artigo.

Artigos mais lidos pelo mesmo(s) autor(es)

1 2 3 4 > >>