A diamond-like carbon (DLC) coating is an extremely rugged and abrasion resistant anti-reflection coating, making it ideal for external surface applications where extreme environmental conditions will be encountered. Umicore can successfully apply DLC coatings to germanium and silicon substrates.
Specifications
| DLC Product ID | UCS_Ge_03 Rev 7.0 |
UCS_Si_02 Rev 2.0 |
| Substrate | Germanium | Germanium |
| Waveband | 8-12µm | 3-5µm |
| Transmission Average (thru both sides) |
≥89% 8µm-12µm (when combined with UCS_Ge_01) | ≥92% 3µm-5µm (when coated both faces UCS_Si_01) |
| Reflection Average (per surface) |
≤3.0% 8µm-12µm | ≤5.0% 3µm-5µm |
| Angle of Incidence | 0° | 0° |
DLC Coating Environmental Durability Testing:
- Adhesion: MIL-C-48497A (4.5.3.1)
- Humidity: MIL-C-48497A (4.5.3.2)
- Severe Abrasion: MIL-C-48497A (4.5.5.1)
- Salt Spray: MIL-C-675C (4.5.9)
- Wiper Test: TS1888 (5.4.3)
Image: Example spectral scan of DLC/HEAR 3-5µm coating on Silicon