Ti-Zr-Ni coatings deposited by low vacuum plasma spray technique consisted of nanometer-sized 1/1 cubic approximant and TiZrNi Laves phases as well as a low volume fraction of phase. The shift of composition during deposition of the quasicrystalline powders and the presence of phases are believed to be responsible for the reduced corrosion performances evaluated by means of electrochemical tests in a Hanks' Balance Salt Solution at .