Abstract
Alternating layers of Ni and Ni–Al were magnetron sputter deposited at room temperature, and then annealed at 1073 K in a high vacuum furnace for an hour to produce Ni/Ni 3Al microlaminates with controlled composition, spacing, and volume fraction of the layer. The annealed composite was confirmed to be Ni and Ni 3Al by transmission electron microscope (TEM). The film parameters were evaluated by fitting the measured dispersion curve to a theoretical model. For Ni/Ni 3Al laminated composites, a density of 7500±100 kg/m 3, Young's modulus of 280±10 GPa, and a thickness of 140±5 μm, were found.
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