OXIDATION OF AMORPHOUS Cu54Zr22Ti18Ni6 COATING BETWEEN 573 AND 769 K IN AIR

Gas-atomized amorphous Cu54Zr22Ti18Ni6 powders were sprayed onto a steel substrate by the kinetic spraying method to make an amorphous Cu54Zr22Ti18Ni6 coating. The oxidation behavior of the coating was studied over the temperature range 573-769 K in air. The oxidation products were primarily Cu2O, CuO, beta-ZrO2, ZrTiO4, and Cu. Copper oxides were the major oxides. Preferential oxidation of Cu occurred around the surface of the coating.