Project Description: 

The surface oxide layer is formed by most metals which are exposed to ambient air. This surface layer prevents any further gas adsorption. Repeated air exposure-activation cycles progressively enrich the film of the getter with oxygen, reducing its performance and shortening its operating life. The palladium coating overcomes this inconvenience. Furthermore palladium coating provide a low electron-stimulated desorption yield even without activation. Palladium coating allows obtaining reversible pumping without a thick passivation layer is formed.

Please see related information here on Non-evaporable getter (NEG) thin film coatings.

Image credit: wikicommons

You are here