TaC-coated Graphite EVEREDKOTE™-B
EVEREDKOTE™-B is a high-purity isotropic graphite substrate covered with dense tantalum carbide via CVD.
EVEREDKOTE™-B is the name of a product consisting of a specially developed high-purity isotropic graphite substrate coated with a dense tantalum carbide film via a proprietary chemical vapor deposition (CVD) method. It has the following characteristics:
Characteristics
- Tantalum carbide film is stable at high temperatures and provides excellent thermal durability.
- Excellent thermal shock resistance to withstand rapid heating and cooling.
- Low reactivity with etching gases.
- Coating film provides excellent density, ensuring extremely low gas permeability.
- Both graphite substrate and tantalum carbide film are high purity.
EVEREDKOTE™-B Surface and SEM cross-section image
Reactivity with ammonium
Emissivity
Impurity analysis example mass ppm
| Element | Content |
| B | < 0.01 |
| N | < 5 |
| Na | < 0.01 |
| Mg | < 0.05 |
| Al | < 0.01 |
| Si | 0.14 |
| P | <0.3 |
| S | <0.02 |
| Cl | -0.3wt% |
| Ca | < 0.05 |
| Ti | < 0.005 |
| V | < 0.005 |
| Cr | < 0.1 |
| Mn | < 0.005 |
| Fe | 0.42 |
| Co | < 0.01 |
| Ni | 0.06 |
| Cu | <0.05 |
| Zn | < 0.05 |
| As | < 10 |
| Nb | 1.1 |
| Mo | 1.6 |
※1 < :Detection limit *2 The figures above are measurement examples and are not to be guaranteed.
Features
- Heat resistant materials
- Corrosion resistant materials
- Low emissivity
- Thermal shock resistance
- Density
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