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Title: | Time-resolved neutron diffraction study of Ti–TiC–Al2O3 composites obtained by SHS |
Authors: | Mas-Guindal, M. J.; Turrillas, Xabier M. CSIC ORCID ; Hansen, T.; Rodríguez, Miguel A. CSIC ORCID | Keywords: | Powders-solid state reaction Composites Synthesis Time-resolved neutron diffraction |
Issue Date: | Nov-2008 | Publisher: | Elsevier | Citation: | Journal of the European Ceramic Society 28(15): 2975-2982(2008) | Abstract: | Cermets of the titanium matrix family have potential applications in the aeronautical and automotive fields. Self-propagating high-temperature synthesis (SHS) constitutes a good method to produce them, as it implies low processing costs and energy and time efficiency. An interesting feature of this process is to determine the mechanism of reaction. A good method to do it is the use of in situ real-time diffraction techniques. The objective of this paper is to show how the use of time-resolved neutron diffraction (TRND) providing a deeper insight into the mechanism of a typical SHS reaction by monitoring the formation of a cermet of the system Ti–TiC–Al2O3. Neutron diffraction experiments have been conducted on Instrument D20 at the Institute Max von Laue-Paul Langevin (Grenoble, France) with a high-flux medium-resolution powder diffractometer. Results show that reaction is initiated with the melting and diffusion of aluminium through the sample, and shortly after product phases are formed. The final product shows a general structure composed of a titanium matrix with the rest of the phases located in reaction domains. | Publisher version (URL): | http://dx.doi.org/10.1016/j.jeurceramsoc.2008.05.001 | URI: | http://hdl.handle.net/10261/19977 | DOI: | 10.1016/j.jeurceramsoc.2008.05.001 | ISSN: | 0955-2219 |
Appears in Collections: | (IETCC) Artículos (ICV) Artículos |
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