Invention Grant
- Patent Title: Hardening chromium oxide films in a magnetic tape head and other structures
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Application No.: US14742827Application Date: 2015-06-18
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Publication No.: US09773513B2Publication Date: 2017-09-26
- Inventor: Robert G. Biskeborn , Calvin S. Lo , Charles T. Rettner , Philip M. Rice , Teya Topuria , Kumar R. Virwani
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Bryan D. Wells
- Main IPC: B05D3/00
- IPC: B05D3/00 ; B05D3/06 ; C08J7/18 ; G11B5/31 ; C23C14/58
Abstract:
A chromium oxide film is formed at room temperature. The chromium oxide film has at least one partially polycrystalline portion and/or at least one amorphous portion depending upon the substrate(s) over which the chromium oxide film is formed. Partially polycrystalline portion(s) of the chromium oxide film are exposed, at room temperature, to an electron beam that has an accelerating voltage of at least 100 kilovolts to further crystallize the partially polycrystalline portion(s). Amorphous portion(s) of the chromium oxide film are exposed, at room temperature, to an electron beam that has an accelerating voltage of more than 100 kilovolts to crystallize the amorphous portion(s).
Public/Granted literature
- US20160372142A1 HARDENING CHROMIUM OXIDE FILMS IN A MAGNETIC TAPE HEAD AND OTHER STRUCTURES Public/Granted day:2016-12-22
Information query
