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Ceramic Supra Series
The Supra line of ceramic-based thermal spray Flexicord products to increase the life of components exposed to demanding process conditions. The Supra Flexicord line provides denser coatings with lower porosity, smoother finish after spraying (lower Ra) and finer micro-structure than other Flexicord products.
Supra Flexicord products are available in a range of coating formulations for optimized resistance to mechanical wear, corrosion, thermal shock & thermal cycling. These materials provide excellent diffusion & thermal barrier characteristics as well as electrical insulation properties.
Chromia Supra Thermal Spray Flexicord (Cr2O3)
Features & Benefits
- Produces dense, hard coatings.
- Excellent corrosion resistance in acidic & alkaline environments.
- Resistant to abrasion, fretting, cavitation and particle erosion.
- Very good surface finishing as sprayed.
Physical Properties
| Composition | Coating Hardness | ASTM G65 Volume Loss | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness |
| Cr2O3 – 99.2% Other – max 0.8% |
935 Hv300 | 6 mm3 | 5.2 g/cm3 (0.187 lb/in3) | 1% | ~5 μm | 3 μm Ra |
Alumina Supra Thermal Spray Flexicord (Al2O3)
Features & Benefits
- Imparts dense coating for protection against friction & corrosion in most acidic & alkaline environments.
- Ideal for high temperature and electrical insulation applications.
- Diffusion barrier coating to protect metals from oxidation or carburation.
Physical Properties
| Composition | Coating Hardness | ASTM G65 Volume Loss | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness | Resistivity | AC Dielectric Strength |
| Al2O3 – 99.7% Other – max 0.3% |
680 Hv300 | 36 mm3 |
3.8 g/cm3 |
4 - 6% | ~2 - 12 μm | 3 - 5 μm Ra | 2.108 Ω/cm at 700°C (1292°F) | 10 – 15 kV/mm |
Spinel Supra Thermal Spray Flexicord (Al2O3 30% MgO)
Features & Benefits
- Good dielectric strength at high temperatures.
- Good corrosion resistance.
- Moderate abrasion resistance.
- Good diffusion/thermal barrier coating.
- Suitable for contact with molten metals (Aluminum and Zinc).
Physical Properties
| Composition | Coating Hardness | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness |
| Al2O3 – 70% MgO – 30% |
1000 Hv300 |
4 g/cm3 (0.144 lb/in3) |
4 - 7% | ~5 - 10 μm | 7 - 12 μm Ra |
AZ Supra Thermal Spray Flexicord (Al2O3 23% ZrO2)
Features & Benefits
- Excellent abrasion resistance.
- Good resistance against thermal shock & thermal cycling.
- Good corrosion resistance in acidic environments.
- Applicable to refractory steel up to 750°C (1382°F).
Physical Properties
| Composition | Coating Hardness | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness |
| Al2O3 – 75% ZrO2 – 23% Other – 2% |
500 – 600 Hv300 |
4.3 g/cm3 (0.155 lb/in3) |
2 - 5% | ~5 μm | 3 - 5 μm Ra |
ZirMag Supra Thermal Spray Flexicord (ZrO2 22% MgO)
Features & Benefits
- Produces smooth, fine structured coatings.
- Good resistance to thermal shock & thermal cycling.
- Ideal for tools in contact with steel & steel extrusion dies.
- Ideal for high temperature applications.
Physical Properties
| Composition | Coating Hardness | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness |
| Al2O3 – 78% MgO – 22% |
650 Hv300 |
5.2 g/cm3 (0.187 lb/in3) |
1.8 - 4% | 1 – 10 µm | 5 – 7 µm Ra |
Iron Oxide Thermal Spray Flexicord (Fe3O4)
Features & Benefits
- CTE close to that of steel.
- Suitable for delaminating layer in steel forging applications.
- Good impact and scratch resistance.
- Good corrosion resistance in acidic & alkaline environments.
Physical Properties
| Composition | Coating Hardness | Coating Density | Coating Porosity | Pore Diameter | Coating Roughness |
| Fe3O4 – 92% SiO2 – 3% Other – 5% |
810 Hv300 |
5.1 g/cm3 (0.182 lb/in3) |
6 - 8% | 5 – 20 µm | 12 – 13 µm Ra |
