Table 2 The surface roughness and mechanical properties of TC4 titanium alloy substrate and its Ni-B coatings
From: Tribological Behaviors of Electroless Nickel-Boron Coating on Titanium Alloy Surface
Roughness (nm) | Micro-hadness (HV) | Nano-hardness (GPa) | Modulus (GPa) | |
|---|---|---|---|---|
TC4 | 76.7 ± 5.7 | 303.5 ± 28.9 | 3.4 ± 0.4 | 101.8 ± 5.4 |
As-plated coating | 364.7 ± 25.9 | 648.5 ± 77.9 | 7.0 ± 1.0 | 106.2 ± 6.1 |
Air-treated coating | 717.2 ± 33.8 | 951.0 ± 84.1 | 9.8 ± 0.5 | 109.3 ± 8.9 |
Nitrogen-treated coating | 629.7 ± 80.2 | 1077.9 ±106.0 | 12.2 ± 1.2 | 113.9 ± 10.5 |