Research Article
Effect of Shot Peening on the Mechanical Properties and Cytotoxicity Behaviour of Titanium Implants Produced by 3D Printing Technology
Table 1
Parameters of shot for shot peening.
| Shot | Typical chemical composition (%) | Average grain size (μm) | Grain shape | Hardness |
| Stainless steel shot – CrNi | Cr | 16–20 | 400–900 | Spherical | 235 HV | Ni | 7–9 | Si | 1.8–2.2 | Mn | 0.7–1.2 | C | 0.05–0.2 | Fe | Bal. |
| Nutshell granules | Nonferrous, organic blasting media | 450–800 | Angular | Approx. 2.5–3.5 mohs |
| Ceramic beads | ZrO2 | 61.98 | 125–250 | Spherical | Approx. 7–7.5 mohs | SiO2 | 27.77 | Al2O3 | 4.57 | CaO | 3.47 | TiO2 | 0.34 | Fe2O3 | 0.14 |
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