The Technology of The Manufacturing Thin Wire of TiNi-based Alloys by Using Infrared Radiation

The paper describes the technology of manufacturing a thin nickel-titanium wire through direct exposure to infrared radiation (IR). The effect of IR on the change in the structure of a thin wire made from the TiNi-based alloy was studied during its manufacturing. A comparative analysis of the Ti, Ni and O concentration in the TiNi wire was carried out. The analysis was performed for both a thin wire exposed to infrared radiation and that not exposed to infrared radiation. The wire samples were studied using a scanning electron microscope with the energy dispersive analysis. The infrared radiation effect on the structure of the wire is shown after thermal treatment in the local area of the material

Structure and Properties of Porous Alloys Based on NiTi Doped by Al, Fabricated by SHS-method

The effect of aluminum doping of porous TiNi-based alloy on structure, penetrability, strength properties and characteristic temperature intervals of martensitic transformations, multiple shape memory effect (MSME) parameters were studied. In this paper porous alloys from mixture of titanium, nickel and aluminum (CAl=0-2.0 at. %) powders were obtained by self propagation high temperature synthesis (SHS-method). Aluminum additives allow to obtain a material which is characterized by an increased content of fine pores 10-20 mm, uniform pore size distribution, an increased level of strength. The optimum concentration of Al to obtain high properties of material was defined. The porous TiNi-based alloys doped with aluminum are promising to solve a number of complex medical problems, such as in vascular surgery and cellular technologies