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Zakharyan

Periodical Getter Cleaning of the Gas Environment Inside a Device
Engineering Education # 06, June 2014
DOI: 10.7463/0614.0715485
Application of adhesives and sealants in assembly technology of modern vacuum electro-mechanical devices allows connecting parts of different materials and significantly reduces the cost of products. However, outgassing of the adhesive joints deteriorates the vacuum inside the devices and limits their service life. Prolonged vacuum outgassing adhesive joints at elevated temperatures solves this problem but labor intensity of this operation prevents its use in mass production. For devices which are switched on relatively rare or once the desired vacuum level can be achieved by switching the getter directly before use. A short-time heating of the getter removes the main residual gas component - the hydrocarbons from the inner atmosphere of a vacuum device and provide the its functionality for a long time interval. An additional internal outgassing adhesive joints in the process of manufacturing the device is not required.
 
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