Gold is one of the most valuable and sought-after metals in the world. Since its discovery during ancient times, it has been utilized as jewelry, coins, and tools. Still, in today's economy, its most popular use is as jewelry. Gold is one of the more beautiful precious metals with a lustrous, yellow sheen. It has a melting point of 1,064°C, a density of 19.3 g/cc, and a vapor pressure of 10-4 Torr at 1,132°C with its ideal evaporation temperature being around 1,400°C. It is soft, dense, malleable, ductile, and an excellent conductor of heat and electricity. Deposited films of gold are used as layers in the production of semiconductors, sensors, batteries, and data storage.
| Material Type | Gold |
| Symbol | Au |
| Atomic Weight | 196.966569 |
| Atomic Number | 79 |
| Purity | 3N5-5N |
| Color/Appearance | Gold, Metallic |
| Thermal Conductivity | 320 W/m.K |
| Melting Point (°C) | 1,064 |
| Coefficient of Thermal Expansion | 14.2 x 10-6/K |
| Theoretical Density (g/cc) | 19.3 |
| Z Ratio | 0.381 |
| E-Beam | Excellent |
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.
