Microstructure and flexural strength of the Y:TZP/BG composite
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International Journal of Applied Ceramic Technology
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The addition of bioactive glasses to a Y:TZP matrix represents a feasible alternative
to provide bioactivity to this material and optimize osseointegration. This work
evaluated the effect of the BG concentration (0 and 10 wt%) and the sintering temperature
(1200°C and 1300°C) on the microstructure, relative density, and flexural
strength of the composite Y:TZP/BG. The Y:TZP and Y:TZP/BG powders were
uniaxially pressed and sintered at 1200°C or 1300°C for 1 h. The microstructure
was characterized by X‐ray diffraction analysis, scanning electron microscopy, and
energy‐dispersive X‐ray Spectroscopy. Relative density was calculated from density
values obtained using the Archimedes’ principle. For the flexural strength, specimens
(n = 6) were fractured in a biaxial flexural setup using a piston‐on‐three‐balls
fixture in a universal testing machine. Bioactivity test was performed in simulated
body fluid solution. The results suggested that BG addition decreased the grain size
of the composite, increased porosity and caused a significant decrease in the relative
density and flexural strength. Crystalline phases of calcium stabilized cubic zirconia
and sodium zirconium silicate were formed after the addition of BG. Finally, it was
concluded that composite specimens sintered at 1300°C showed the highest density
values and larger grains compared to those sintered at 1200°C.
Como referenciar
MIRANDA. RANULFO B. de P.; BORGES, ROGER; MARCHI, JULIANA; LIMA, NELSON B. de; CESAR, PAULO F. Microstructure and flexural strength of the Y:TZP/BG composite. International Journal of Applied Ceramic Technology, v. 16, n. 5, p. 1979-1988, 2019. SI. DOI: 10.1111/ijac.13306. Disponível em: http://repositorio.ipen.br/handle/123456789/30452. Acesso em: 24 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.