Nano-Indentation of SiC and Si3N4/SiC Ceramic Materials |
|
| Journal | Key Engineering Materials (Volume 290) |
|---|---|
| Volume | Fractography of Advanced Ceramics II |
| Edited by | J. Dusza, R. Danzer and R. Morrell |
| Pages | 272-275 |
| DOI | 10.4028/www.scientific.net/KEM.290.272 |
| Citation | Miroslav Balog et al., 2005, Key Engineering Materials, 290, 272 |
| Online since | July, 2005 |
| Authors | Miroslav Balog, Pavol Šajgalík, Zoltán Lenčéš, Miroslav Hnatko, Jozef Kečkéš, Jow Lay Huang, J. Janega, R. Horváthová |
| Keywords | Hardness, Modulus, Nanoindentation, Silicon Carbide (SiC) |
| Abstract | The present paper deals with the nano-indentation of SiC-micro and Si3N4/SiCmicro/ nano ceramic materials. The investigated SiC-micro and Si3N4/SiC-micro/nano ceramics were prepared by liquid phase sintering. Liquid phase was formed from different sintering additives (Y2O3, Yb2O3, Sm2O3). In the case of Si3N4/SiC-micro/nano ceramics the SiC nano-grains were created from SiNC amorphous powder. SiNC precursor decomposed to SiC and Si3N4 particles during sintering. The comparison of nano- and macro-hardness of investigated ceramic materials showed that nano-hardness is significantly higher. The indentation modulus correlated with the measured nano-hardness. Remarkable influence of grain boundaries and SiC nano-inclusions on hardness was observed. |
| Full Paper | 
Get the full paper by clicking here
|
First page example
