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Ti/C and Ti/B nanocomposites: comparison of hydrogen sorption-desorption properties

Olga Morozova 1,  Tatiana Khomenko 1,  Alexander Leonov 2,  Christine Borchers 3,  Ernst Kurmaev 4,  Alexander Moewes 5

1. Institute of Chemical Physics RAS (ICP), Kosygin St., 4, Moscow 119991, Russian Federation
2. Chemistry Department, Moscow State University, Leninskie Gory, 1-3, Moscow 119992, Russian Federation
3. University of Goettingen, Institute of Material Physics, 1 Friedrich-Hund-Platz, Gottingen 37077, Germany
4. Russian Academy of Sciences, Ural Division, Institute of Metal Physics, 18 S.Kovalevskaya str., GSP-170, Ekaterinburg 620219, Russian Federation
5. University of Saskatchewan, 110 Science Pl., Saskatoon S7N5C9, Canada

Abstract

The effects of graphite and B on hydrogen absorption by Ti under the mechanical treatment in H2/He flow and on the thermal stability of Ti-hydride produced during milling were studied using kineticand spectroscopic techniques. The results obtained are compared with corresponding properties of pure Ti. Both additives stimulate the formation of occupation sites for hydrogen that are not present when pure Ti is milled in H2/He flow. These sites are characterized by low H2 desorption temperature: ~600 K instead of ~1000 K.

 

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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium F, by Olga Morozova
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-12 17:58
Revised:   2009-06-07 00:48