| Title | Sintering, high temperature strength and oxidation resistance of liquid-phase-pressureless-sintered SiC-AlN ceramics with addition of rare-earth oxides |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2009 |
| Authors | Magnani, G., Antolini F., Beaulardi L., Burresi Emiliano, Coglitore A., and Mingazzini C. |
| Journal | Journal of the European Ceramic Society |
| Volume | 29 |
| Pagination | 2411-2417 |
| ISSN | 09552219 |
| Keywords | Additives, AlN, AlN ceramic, Cerium, Cerium compounds, Composites, Erbium, Flexural strength, Grain boundaries, Grain boundary phasis, High density, High temperature strength, Holmium, Liquid Phase, Lutetium, Mechanical properties, oxidation, Oxidation resistance, Oxide additive, Oxides, Powder bed, Pressureless-sintered, Rare earth oxide, Rare-earth oxides, SiC, Silicon carbide, Sintered body, Sintering, Specific weights, Surface treatment, Ytterbium |
| Abstract | SiC-AlN composites can be pressureless sintered with the addition of rare-earth oxides (RE = Y, Yb, Er, Lu, Ho, Sm, Ce) and without protective powder bed. Sintered bodies showed high density (≥97% T.D.) and were mainly composed by 2H SiC-AlN solid solution with additive containing grain boundary phases. The high temperature strength and oxidation resistance of the composites were also investigated and correlated with the cationic radii of the oxide additives. The flexural strength at 1500 °C increased from 269 MPa to 587 MPa as direct consequence of the rare-earth cationic radius decrease. The specific weight gain during oxidation at 1500 °C for 200 h showed the same behaviour, decreasing from 12.60 mg/cm2 to 3.13 mg/cm2. © 2009 Elsevier Ltd. All rights reserved. |
| Notes | cited By 21 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-67349123385&doi=10.1016%2fj.jeurceramsoc.2008.12.020&partnerID=40&md5=772be5102993cbbd0551b4c67db46bfe |
| DOI | 10.1016/j.jeurceramsoc.2008.12.020 |
| Citation Key | Magnani20092411 |
