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Oxygen Trap To Protect Disk Drives From Corrosion And Oxidation Disclosure Number: IPCOM000014352D
Original Publication Date: 2001-Sep-01
Included in the Prior Art Database: 2003-Jun-19

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Disclosed is a method to seal the drive enclosure from the ambient atmosphere so as to restrict air exchange and thus limit the amount of oxygen. Add an oxygen scavenger inside the drive to provide a low oxygen environment. This would be in the form of a tablet or pouch of porous non-woven material, filled with a material that reacts with the oxygen in the drive and fixes it in a stable solid compound. A commonly used oxygen trap material is based on manganese (II) oxide, or simply manganese oxide. When that oxide scavenges oxygen gas, it converts to manganese (IV) oxide, or manganese dioxide, and the color changes from green to black. The properties of manganese (II) oxide are as follows: Formula as commonly written: MnO Hill system formula: Mn1O1