A titanium getter in vacuum heat treating is a reactive material used to enhance the vacuum by removing unwanted gas contaminants. This is achieved through adsorption, absorption, or chemical binding with the gas molecules. Titanium, along with other metals like stainless steel, zirconium, and hafniRead more
A titanium getter in vacuum heat treating is a reactive material used to enhance the vacuum by removing unwanted gas contaminants. This is achieved through adsorption, absorption, or chemical binding with the gas molecules. Titanium, along with other metals like stainless steel, zirconium, and hafnium, are commonly used as getter materials due to their properties which are suitable for heat-treating applications.
In practice, titanium getters are particularly effective when processing titanium parts. To prevent oxidation and discoloration during annealing processes within a temperature range of 650°C to 760°C, titanium scraps are often included with the parts in the vacuum. This method ensures that the parts’ surfaces remain clean.
Furthermore, non-evaporable getters, which often include alloys from Group IV and V elements, are integral to creating ultra-high vacuum environments. These materials have unique surface properties that enable achieving vacuum conditions of 10-10 mbar or lower. They are used in various ways depending on the application, including in electronic tubes and semiconductor manufacturing.
Source: VAC AERO International – Getter Materials
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Bake-out is a process which is meant to remove contaminants from components so that high vacuum can be achieved in treatment, and to prevent impurities. To remove these unwanted compounds, engineers perform bake-outs at various high temperatures (these can range from 120 degrees Celsius up to 400 deRead more
Bake-out is a process which is meant to remove contaminants from components so that high vacuum can be achieved in treatment, and to prevent impurities. To remove these unwanted compounds, engineers perform bake-outs at various high temperatures (these can range from 120 degrees Celsius up to 400 degrees Celsius).
The volatile compounds (such as vapor from components, or external particulate matter from humans or the environment) are driven off of the component during the period of heating. The volatile particles are then removed by the vacuum pump.
References:
Vacuum Bake Out: Its Importance and Implementation
courtesy of Vacuum Science World
https://www.vacuumscienceworld.com/blog/vacuum-bake-out
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