High Temperature Oxidation Behavior of TiNi Alloys

J.H. Ko; Dong Bok Lee

doi:10.4028/www.scientific.net/MSF.475-479.853

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Substructure Development in Rapidly Solidified B2-Type TiCo Ribbons
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High Temperature Oxidation Behavior of TiNi Alloys
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Phase Transformation and Synthesis of Ni Substituted CoSb₃ Skutterudite Synthesis during Solid State Reaction
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RCu_1+xSb₂ (R = La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho and Y) Phases with Defect CaBe₂Ge₂-Type Structure
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Iron–Aluminium-Base Alloys with Strengthening Laves Phase for Structural Applications at High Temperatures
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Investigation on Microstructure Transformation and Failure Behavior of Cu-Cd-Nb-C_P Electrical Contact Material
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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479High Temperature Oxidation Behavior of TiNi Alloys

High Temperature Oxidation Behavior of TiNi Alloys

Abstract:

The oxidation behavior of the equiatomic TiNi alloy was investigated at 600-900oC. The oxidation resistance of the TiNi alloy was better than the pure Ti alloy, but worse than the pure Ni alloy. The oxide scales consisted of TiO2, with and without embedded particles of TiNiO3 and Ni. The subscale matrix phase was (TiNi3+TiNi) at 600oC, TiNi3 at 700oC, (Ni+TiNi3) at 800oC, and Ni at 900oC. Oxidation was mainly governed by the inward diffusion of oxygen, and the outward diffusion of Ti and a bit of Ni. Detailed microstructures and the oxidation mechanism are proposed.