Ball milled Ni-Ti powder deposited by cold spraying

摘要

A 50Ni-50Ti powder was produced by solid state synthesis via mechanical alloying from elemental Ti and Ni powders. The product was characterized using X-ray diffraction, scanning electron microscopy and optical microscopy. Cold spraying makes possible to deposit the coating of temperature sensitive materials, such as nanos-tructured material, without any significant change in the microstructure of feedstock. The preliminary results of this work showed that the ball milled Ni-Ti coating can be deposited by cold spraying. The coating presents a multilayer structure consisting of the alternate flattened Ni and Ti particles.