Chromium is one of the most popular metals in the world. Chromium is a silvery, lustrous, hard, and brittle metal known for its high mirror polish and corrosion resistance. It has a melting point of 1,857°C, a density of 7.2 g/cc, and a vapor pressure of 10-4 Torr at 1,157°C. Its name comes from the Greek word "chroma", which means color, due to its very colorful compounds. It is widely used in the automobile industry to form a shiny coating found on wheels and bumpers. Chromium is used in many vacuum applications such as automotive glass coatings, photovoltaic cell fabrication, battery fabrication, and decorative and corrosion resistant coatings.
| Material Type | Chromium |
| Symbol | Cr |
| Atomic Weight | 51.9961 |
| Atomic Number | 24 |
| Purity | 3N5-5N |
| Color/Appearance | Silvery, Metallic |
| Thermal Conductivity | 94 W/m.K |
| Melting Point (°C) | 1,857 |
| Coefficient of Thermal Expansion | 4.9 x 10-6/K |
| Theoretical Density (g/cc) | 7.2 |
| Z Ratio | 0.305 |
| E-Beam | Good |
Vacuum evaporation means the evaporation materials are evaporated to atoms or molecules in vacuum by current heating, electron beam heating and laser heating. Atoms or molecules make rectilinear motion to impact substrate surface and condense to form films.
NEXTECK (NEXTECK www.nexteck.com) provides various high quality evaporation materials, with a full range of purities and sizes, to meet customers’ needs. Our precious and non-precious films are widely used in automotive, aerospace, physic, flat panel display, magnetic/light recording medium, coated glass, optical coating , hard film, decorative film and other fields.
