Ti2Ni-based alloys containing oxygen, nitrogen and carbon were investigated
regarding their metallographic structures and hydrogenation characteristic
s. The ahoy samples containing these non-metal elements had multi-phase str
uctures composed of Ti4Ni2X, TiNi and TiX (X=O, N, C) phases. The ternary a
lloy samples reversibly absorbed and desorbed hydrogen under moderate condi
tions such as room temperature and atmospheric pressure. The hydrogenation
properties of the alloy samples containing the non-metal elements were comp
ared with those of the binary Ti2Ni compound. (C) 2000 Elsevier Science S.A
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