Fractal Dimension of Zirkonia Grain in Alumina/Zirconia Ceramic Composites

1996 ◽  
Vol 204-206 ◽  
pp. 709-712
Author(s):  
X. Meng ◽  
C. Shang ◽  
R. Zhi
Author(s):  
T. Sornakumar ◽  
M.V. Gopalakrishnan ◽  
V.E. Annamalai ◽  
R. Krishnamurthy ◽  
C.V. Gokularathnam

2001 ◽  
Vol 13 (3) ◽  
pp. 214-216 ◽  
Author(s):  
Z. J. Shen ◽  
E. Adolfsson ◽  
M. Nygren ◽  
L. Gao ◽  
H. Kawaoka ◽  
...  

2019 ◽  
Vol 39 (7) ◽  
pp. 2510-2517 ◽  
Author(s):  
Muhammad Yasir Akram ◽  
Valentina Casalegno ◽  
Monica Ferraris ◽  
Georg Puchas ◽  
Walter Krenkel ◽  
...  

2012 ◽  
Vol 32 (9) ◽  
pp. 2053-2056 ◽  
Author(s):  
Hynek Hadraba ◽  
Daniel Drdlik ◽  
Zdenek Chlup ◽  
Karel Maca ◽  
Ivo Dlouhy ◽  
...  

2014 ◽  
Vol 6 (5) ◽  
pp. 3320-3324 ◽  
Author(s):  
R. M. Khattab ◽  
M. M. S. Wahsh ◽  
N. M. Khalil ◽  
F. Gouraud ◽  
M. Huger ◽  
...  

2008 ◽  
Vol 23 (2) ◽  
pp. 185-185
Author(s):  
J. Ruiz-Hervias ◽  
A. Steuwer ◽  
T. Buslaps ◽  
J. Gurauskis ◽  
C. Baudin

Ceramics ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 78-91 ◽  
Author(s):  
Ángela Gallardo-López ◽  
Javier Castillo-Seoane ◽  
Carmen Muñoz-Ferreiro ◽  
Cristina López-Pernía ◽  
Ana Morales-Rodríguez ◽  
...  

In this work, the flexure strength and fracture propagation mechanisms in yttria tetragonal zirconia (3YTZP) dense composites with 1 and 5 vol.% exfoliated graphene nanoplatelets (e-GNP) were assessed. The composite powders were processed by dry planetary ball milling to exfoliate the as-received GNP, and then densified by spark plasma sintering (SPS). The hardness and Young’s modulus were measured by Vickers indentation and the impulse-echo technique, respectively. Flexural strength and modulus were estimated by four-point bending tests. Finally, cracks originated by Vickers indentations were analyzed by scanning electron microscopy (SEM). The Raman spectra and SEM observations showed a reduction in the number of graphene layers and most remarkably in the lateral size of the e-GNP, achieving a very homogeneous distribution in the ceramic matrix. The hardness, elastic modulus, and flexural strength of the 3YTZP matrix did not vary significantly with the addition of 1 vol.% e-GNP, but they decreased when the content increased to 5 vol.%. The addition of e-GNP to 3YTZP increased its reliability under bending, and the small lateral size of the e-GNP produced isotropic fracture propagation. However, the energy dissipation mechanisms conventionally attributed to the larger GNP such as fracture deflection or blocking were limited.


Sign in / Sign up

Export Citation Format

Share Document