Table 4.
Mechanical, nanoindentation, and nanoscratch test properties of nanohydroxyapatite coatings.
| Properties | Nanoindentation Properties | Nanoscratch Test Properties | ||||
|---|---|---|---|---|---|---|
| Specimen | Nanohardness (GPa) | Young’s Modulus, E (GPa) | Maximum Depth of Indentation (nm) | E3/h2 (GPa) | Critical Load, Lc (mN) | Critical Friction, Lf (mN) |
| nanoHAp | 0.032 ± 0.009 | 4.46 ± 0.91 | 2617.12 ± 359.26 | 86.64 | 106.77 ± 37.51 | 59.18 ± 20.46 |
| nanoHAp/nanoCu40 | 0.054 ± 0.020 | 10.27 ± 3.16 | 2084.71 ± 382.15 | 371.47 | 123.84 ± 52.46 | 59.14 ± 24.18 |
| nanoHAp/nanoCu40’ | 0.139 ± 0.050 | 17.82 ± 5.48 | 1287.28 ± 279.89 | 292.88 | 141.89 ± 13.09 | 78.99 ± 10.02 |
| nanoHAp/nanoCu80 | 0.051 ± 0.026 | 10.51 ± 3.63 | 1887.62 ± 479.95 | 446.34 | 155.24 ± 12.78 | 94.47 ± 9.73 |
| nanoHAp/nanoCu80’ | 0.059 ± 0.038 | 11.86 ± 6.09 | 2224.33 ± 757.61 | 479.24 | 128.73 ± 30.39 | 80.39 ± 21.01 |