Open Access

Influence of controlled deposition rate on mechanical properties of sputtered Ti thin films for MEMS application


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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.
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.
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.
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.
Effect of film thickness on hardness.

Scratches on titanium coated AA 2024 samples.
Scratches on titanium coated AA 2024 samples.

Effect of film thickness on scratch caused by the applied load (N).
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).
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.
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.
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.

SampleDeposition time [s]Temperature [K]Film thickness [μm]
S0 (uncoated sample)
S118037345
S230047360
S342057386
S4900673153
eISSN:
2083-134X
Language:
English
Publication timeframe:
4 times per year
Journal Subjects:
Materials Sciences, other, Nanomaterials, Functional and Smart Materials, Materials Characterization and Properties