The synthesis of a biocomposite based on nickel titanium and hydroxyapatite under selective laser sintering conditions

The conditions of synthesis of a nickel titanium based biocomposite material with hydroxyapatite added to the initial Ni-Ti powder mixture were studied. The material was obtained by a method based on the combination of laser-controlled selective sintering and self-propagating high-temperature synthesis. The data of X-ray diffraction and electron microscopy indicate that the high-rate laser heating induces the interaction of hydroxyapatite with nickel titanium, which results in the formation of additional intermetallic phases (NiTi2, Ni3Ti).