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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.13 [2006] >
IJEMS Vol.13(5) [October 2006] >
| Title: | Preparation of rare earth oxide doped alumina ceramics, their hardness and fracture toughness determinations |
| Authors: | Maiti, Kuntal
Sil, Anjan |
| Issue Date: | Oct-2006 |
| Publisher: | CSIR |
| IPC Code: | C04B35/40 |
| Abstract: | Alumina
based ceramics doped with rare earth oxide (Y2O3) of 500
ppm, 1000 ppm and 2000 ppm were prepared by following ceramic powder processing
and solid state sintering at 1500°C for different soaking time periods of 3 h,
6 h and 9 h. Microstructural investigations on all the samples were carried
out. Hardness measurements were conducted using Vickers Indentation technique.
Fracture toughness of the samples was estimated by inducing radial cracks by
various indentation loads on the samples. The measured hardness values were
found to lie between 139 MPa and 1444 MPa, while the fracture toughness values
lie in the range 1.65-5.76 MPa m1/2 |
| Page(s): | 443-450 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.13(5) [October 2006]
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