Titanium Getter is a product made from Gr1 titanium powder through sintering. It has excellent adsorption performance and is mainly targeted at active gases, such as O₂,H₂,CO,N₂, H₂O, and so on, and plays a crucial role in industrial and laboratory environments, helping maintain specific atmospheric conditions to ensure smooth processes.
The adsorption and desorption capabilities of the GR1 titanium porous getter depend on various factors, including its preparation method, structural characteristics, gas types, and application environments.
The core mechanism of action as a getter
Principle of chemical adsorption
The titanium active surface reacts irreversibly with gas molecules (O₂, H₂, CO, N₂, etc.):
2 Ti+O2→2 TiO2 Ti+2 H2→TiH4
The reaction generates stable compounds (oxides, hydrides), permanently reducing the gas partial pressure in the system.
Synergistic effect of porous structure
Accelerate gas diffusion: open pores shorten the gas permeation path and increase the adsorption rate by 185% (compared with flat films).
Improved adsorption capacity: The three-dimensional support makes the air absorption capacity reach 0.353 Pa·L/cm² (147% higher than the flat film).
Activation and regeneration characteristics
The activation temperature is 500℃ (usually 10- 30mins), heating to remove the surface oxide layer and expose the fresh titanium surface.
The getters can be recycled, and the specific number of uses depends on the situation.
After the getter is saturated, it can release deeply adsorbed gas through 500℃ vacuum annealing to achieve multiple cycles. Usually, the H2 release temperature is between 600-700℃.
