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Oxygen Trap To Protect Disk Drives From Corrosion And Oxidation

IP.com Disclosure Number: IPCOM000014352D
Original Publication Date: 2001-Sep-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 39K

Publishing Venue

IBM

Abstract

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

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Oxygen Trap To Protect Disk Drives From Corrosion And Oxidation

  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

CAS registry number: [1344-43-0]

Formula weight: 70.937

Class: oxide

Synonyms

manganese (II) oxide

manganese oxide

    This is used to suppress corrosion of heads, disks, and other components in the disk drive, and to suppress oxidation of greases, lubricants, and other materials in the disk drive, so as to allow use of cheaper materials,

    It is well accepted that oxygen is a necessary element for oxidation and corrosion reaction, so its removal would suppress those harmful processes.

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