| Grant number: | 14/06127-5 |
| Support Opportunities: | Scholarships abroad - Research |
| Start date: | August 28, 2014 |
| End date: | August 27, 2015 |
| Field of knowledge: | Engineering - Materials and Metallurgical Engineering |
| Principal Investigator: | Sydney Ferreira Santos |
| Grantee: | Sydney Ferreira Santos |
| Host Investigator: | Jacques Huot |
| Host Institution: | Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas (CECS). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil |
| Institution abroad: | Université du Québec à Trois-Rivières (UQTR), Canada |
Abstract Several hydride-forming alloys have been investigated over the last decade for solid state hydrogen storage but so far there is no alloy which fully accomplishes all the requirements to allow its large scale use for this application. Recently, Ti-Cr-Nb alloys started to be studied for such application. In a wide composition range, these alloys are single phase solid solutions with body centered cubic (BCC) structures. As previously reported by a number of authors, several Ti based BCC solid solutions have interesting hydrogen sorption properties. Some alloys of the Ti-Cr-V, Ti-Mn-V, and Ti-Mo-V systems are good examples of the aforesaid. In these systems, the BCC structure is stabilized by vanadium. Niobium is also a BCC phase stabilizer which could replace V in these alloys, but much less is known about the metallurgical features and especially about the hydrogen sorption properties of Ti ternary alloys containing Nb. Another interesting point to mention is that hydrogen storage BCC alloys usually have their hydrogen sorption properties investigated in the as-cast state (with typically coarse grained and dendritic microstructures), but few is known concerning the effects of heat treatments and mostly thermo-mechanical treatments on the microstructure and hydrogen sorption properties of these alloys. In this project, it is proposed the investigation of Ti-Cr-Nb alloys for hydrogen storage. The microstructure and hydrogen sorption properties (activation, hydrogen sorption kinetics, and pressure-composition isotherms) of these alloys will be investigated in as-cast states and also after heat treatments and thermo-mechanical treatments. (AU) | |
| News published in Agência FAPESP Newsletter about the scholarship: | |
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