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Cross-sectional images of film thickness: (a) 45 μm, (b) 61 μm, (c) 82 μm, and (d) 154 μm of AA 2024 samples obtained at different deposition times.SEM images of AA 2024 substrates coated with Ti thin films at different deposition times: (a) 180 s, (b) 300 s, (c) 420 s, and (d) 900 s.EDX analysis of AA 2024 sample coated by Ti thin films at different deposition times: (a) 180 s, (b) 300 s, (c) 420 s, and (d) 900 s.Effect of film thickness on hardness.Scratches on titanium coated AA 2024 samples.Effect of film thickness on scratch caused by the applied load (N).A lattice pattern with six lines in each direction made on titanium coated AA 2024 sample (cross hatch test).Effect of film thickness on surface roughness.XRD pattern of Ti film deposited on AA 2024, sample S4 obtained at deposition time of 900 s at substrate temperature of 673 K.
Film thickness of samples S0, S1, S2, S3 and S4 for different deposition times and temperatures.