Purity: The purity of molybdenum target is a key indicator of its performance. Generally speaking, the purity of high-purity molybdenum target can reach 99.95% or even higher.
Density: Density close to the theoretical density of molybdenum (10.22 g/cm³) is a sign of high-quality molybdenum target. Higher density indicates that there are fewer voids in the material and the structure is tight, which is crucial to improving the service life and stability of the target material.
Thermal conductivity: The thermal conductivity of molybdenum is about 138 W/m·K. High thermal conductivity is very important for temperature control of the target during high-speed coating, which helps prevent overheating and structural damage of the target.
Thermal expansion coefficient: Molybdenum has a low thermal expansion coefficient of about 4.8×10^-6 /°C. This feature means that the molybdenum target has good dimensional stability under temperature changes, which helps to maintain the consistency and accuracy of the thin film deposition process.
Hardness and strength: Molybdenum has a Vickers hardness of about 2500 HV and has high mechanical strength. This enables the molybdenum target to withstand mechanical shock during high-speed coating.
Surface flatness and roughness: Surface flatness and roughness are also important parameters for evaluating the quality of molybdenum targets. Good surface treatment can reduce the generation of particles during the use of the target and improve the uniformity and quality of the deposited film.
Molybdenum target sample picture display
