Research Article
Characterization of Thermally Sprayed Coated GT Components Made of 3D Printing Based Selective Laser Melting Processed Inconel Alloy 718
Table 2
APS and HVOF process parameters.
| | Spraying process | HVOF spraying system | APS spraying technique |
| | Type of coat | NiCrAlY | YSZ | | Spray distance (mm) | 200, 225, 250, 275, 300 | 75, 90, 110, 120, 125, 140, 180 | | Transversal speed (mm/s) | 16.67 | — | | Oxygen pressure (bar)/flow rate (lpm) | 1.1/220 | — | | Hydrogen pressure(bar)/flow rate (lpm) | 8.6/660 | — | | Carrier gas/pressure (bar)/flow rate (lpm) | N2/7/36 | — | | Principal gas flow (Ar) lpm | — | 6.5 | | Derived gas flow (H2) lpm | — | 4.5 | | Air pressure (bar)/flow rate (lpm) | 5/330 | — | | Powder feed rate (kg/hr) | 3.6 | 2.7 | | Maximum Mach number | 2.4 | — | | Combustion gas velocity | 850 m/sec | — | | Voltage, V | — | 48 | | Current, A | — | 500 |
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