Reactivemechanicalgrindingapplied to a (Ti+Ni) mixture and to a TiNi compound

Jean-Louis Bobet (1) , Bernard Chevalier (1)

1 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Reactivemechanicalgrinding (MG under H2) was applied to a (Ti+Ni) mixture. After only 1 h, all the titanium is transformed into TiH2. After 10 h of milling the TiH2 is nano-structured and it takes approximately 25 h to obtain nano-structured Ni. After 45 h no binary compound is formed between Ti (or TiH2) and Ni and a very homogeneous nano-structured mixture is formed. The electrochemical capacity is approximately 150 mAh g−1 and almost constant upon cycling. Finally the RMG process of TiNi mixture allows one to obtain a partial conversion of ingot into powder.

Mots clés: Intermetallics; Miscellaneous; Hydrogen storage; Mechanical alloying and milling

Domaines: Matériaux

Jean-Louis Bobet, Bernard Chevalier. Reactivemechanicalgrindingapplied to a (Ti+Ni) mixture and to a TiNi compound. Intermetallics, 2002, 10 (6), pp.597-601. ⟨10.1016/S0966-9795(02)00033-X⟩. ⟨hal-00719769⟩