Thermospray Technology: Multi-Chamber Detonation Spraying (MCDS)
MCDS is designed for the deposition of high-quality cemented carbide and ceramic end metallic alloy coatings using HVOF/HVAF powders. An MCDS coating produces high particle velocity and temperature, which leads to an impermeable tungsten carbide coating. This coating has a hardness of up to 1300 HV300.
Sputtek serves a variety of industries with MCDS coating, including the printing, oil, gas, power generation, aerospace and paper industries. Please see the table below for a list of sample processes.
| Powder | Cut | Velocity | D.E. | Spray Rate |
| WC-based powders | -30+10 μm -25+5 μm |
600 - 800 m/s | 80-90% | 1,2 kg/h max |
| CrC-based powders | -25+5 μm | 600 m/s | 70-80% | 1.2 kg/h max |
| Al2O3 – based powders | -20+5 μm | 600 m/s | 70-80% | 1.2 kg/h max |
| ZrB2-MoSi2– based powders | -15+5 μm | 1000-1200 m/s | 50-60% | 0.6 kg/h max |
| ZrSiO4 - based powders | -20+5 μm | 1000-1200 m/s | 60-70% | 0.8 kg/h max |
| Metal (Ti,Ni,Cr,Mo,Cu…) – base powders | -45+5 μm | 800-1000 m/s | 80-90% | 2-3 kg/h max |
- WC-based coatings with hardness of up to 1300 HV300
- Al2O3-based coatings with hardness of up to 1300 HV300
- Ti-based coatings with hardness of up to 1000 HV300
- Coating porosity typically below 0.5%
- Low compressive residual stresses in coatings
- Negligible oxide content in coatings
