Hostname: page-component-8448b6f56d-jr42d Total loading time: 0 Render date: 2024-04-23T10:58:28.431Z Has data issue: false hasContentIssue false
  • English
  • Français

Alumina-Based Functional Materials Hardened with Al or Ti and Al-nitride or Ti-nitride Dispersions

Published online by Cambridge University Press:  01 February 2011

José G. Miranda-Hernández ,
Elizabeth Refugio-Garcia ,
Elizabeth Garfias-García  and
Enrique Rocha-Rangel
José G. Miranda-Hernández
Affiliation:
Departamento de Materiales, Universidad Autónoma Metropolitana Av. San Pablo No. 180, Col. Reynosa-Tamaulipas, México, D. F., 02200.
Elizabeth Refugio-Garcia
Affiliation:
Departamento de Materiales, Universidad Autónoma Metropolitana Av. San Pablo No. 180, Col. Reynosa-Tamaulipas, México, D. F., 02200.
Elizabeth Garfias-García
Affiliation:
Departamento de Materiales, Universidad Autónoma Metropolitana Av. San Pablo No. 180, Col. Reynosa-Tamaulipas, México, D. F., 02200.
Enrique Rocha-Rangel
Affiliation:
Universidad Politécnica de Victoria, Avenida Nuevas Tecnologías 5902, Parque Científico y Tecnológico de Tamaulipas, Ciudad Victoria, Tamaulipas, 87137, México
Get access

Abstract

The synthesis of Al2O3-based functional materials having 10 vol. % of fine aluminum or titanium and aluminum-disperse or titanium-dispersed nitride hardened-particles has been explored. Two experimental steps have been set for the synthesis; specifically, sintering of Al2O3-aluminum or Al2O3-titanium powders which were thoroughly mixed under high energy ball-milling, pressureless-sintered at 1400°C during 1 h in argon atmosphere and then for the second step it was induced formation of aluminum nitride or titanium nitride at 500°C during different times (24, 72 and 120 h) by a nitriding process via immersion in ammoniac salts. SEM analyses of the microstructures obtained in nitride bodies were performed in order to know the effect of the ammoniac salts used as nitrating on the microstructure of aluminum or titanium for each studied functional material. It was observed that an aluminum nitride or titanium nitride layer growth from the surface into the bulk and reaches different depth as the nitriding time of the functional material was increased. The use of aluminum or titanium significantly enhanced density level and hardness of the functional materials.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1276: Advanced Structural Materials–2010 , 2010 , 28
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Weiping, Liu and DuPont, J.N., “Fabrication of functionally graded TiC/Ti composites by Laser Engineered Net Shaping”, Scripta Materialia 48 (2003) 1337.Google Scholar
2. Mortensen, A. and Suresh, S., “Functionally graded metals and metal-ceramic composites”, International Materials Reviews 40 (1995) 239.Google Scholar
3. Miranda-Hernández, José G., Elizabeth, Refugio-Garcia and Enrique, Rocha-Rangel, “Synthesis of Functional Materials by Means of Nitriding in Salts of Al2O3–Al, Al2O3ndash;Ti and Al2O3–Fe Cermets” Materials Research Society Proceedings of The Structural Symposium, IMRC2009, in press.Google Scholar
4. Jaworska, L., Rozmus, M., Królicka, B., Twardowska, A., “Functionally graded cermets” Journal of Achievements in Materials and Manufacturing Engineering, 17 (2006) 138.Google Scholar
5. Wessel, J. K., “The Handbook of Advanced Materials”, John Wiley & Sons, New York, (2004).Google Scholar
6. Rocha-Rangel, E. and Miranda-Hernández, J. G., “Alumina-Copper Composites with High Fracture Toughness and Low Electrical Resistance”, Materials Science Forum 644 (2010) 43.Google Scholar
7. Miyamoto, Y., Kaysser, W. A., Rabin, B. H., Kawasaki, A., and R. G., Ford, (eds.), “Functionally Graded Materials; Design, Processing and Applications”, Kluwer Academic, USA, (1999).Google Scholar
8. Walter, Lengauer, Klaus, Dreyer, “Functionally graded hardmetals”, Journal of Alloys and Compounds 338 (2002) 194.Google Scholar
9. Ko, S.J., Min, K.H., Kim and I-H, Y.D.: “A study on the fabrication of Al2O3/Cu nanocomposite and its mechanical Properties”, Journal of Ceramic Processing Research. 3 (2002) 192.Google Scholar
10. Rocha, E., Becher, P. F. and Lara, E., Rev. Soc. Quím., Méx. 48 (2004) 146.Google Scholar