Hydrogenation characteristics of ternary alloys containing Ti4Ni2X (X = O,N, C)

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 . All rights reserved.