Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field -
The mechanism responsible for the effects of electric fields on the lubricant dip-coating process was investigated by comparing the lubricant film conformations obtained when applying an electric field for different durations. A QA-40 solution was prepared for dip-coating a magnetic disk under two c...
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Japanese Society of Tribologists
2011
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oai:doaj.org-article:d9c53332a33b48889bc526a4010b6cc92021-11-05T09:26:17ZElectric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field -1881-219810.2474/trol.6.40https://doaj.org/article/d9c53332a33b48889bc526a4010b6cc92011-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/6/1/6_1_40/_pdf/-char/enhttps://doaj.org/toc/1881-2198The mechanism responsible for the effects of electric fields on the lubricant dip-coating process was investigated by comparing the lubricant film conformations obtained when applying an electric field for different durations. A QA-40 solution was prepared for dip-coating a magnetic disk under two conditions. The lubricant film thickness and surface free energy obtained under the two conditions were compared. It was found that the molecular conformation was changed by the electric field resulting in more end-groups being adsorbed on the disk surface when the electric field is applied during the withdrawal of the disk from the solution than during the normal dip process. As a result, the surface free energy decreased. As a consequence of applying the electric field during dipping and withdrawing, the thickness of the QA-40 layer increased 1 - 3 Å.Hiroshi TaniMasami KubotaMasayuki KandaMotohiro TeraoNorio TagawaJapanese Society of Tribologistsarticletribologymagnetic recording diskperfluoropolytherlubricantPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 6, Iss 1, Pp 40-44 (2011) |
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DOAJ |
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DOAJ |
| language |
EN |
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tribology magnetic recording disk perfluoropolyther lubricant Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 |
| spellingShingle |
tribology magnetic recording disk perfluoropolyther lubricant Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Hiroshi Tani Masami Kubota Masayuki Kanda Motohiro Terao Norio Tagawa Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| description |
The mechanism responsible for the effects of electric fields on the lubricant dip-coating process was investigated by comparing the lubricant film conformations obtained when applying an electric field for different durations. A QA-40 solution was prepared for dip-coating a magnetic disk under two conditions. The lubricant film thickness and surface free energy obtained under the two conditions were compared. It was found that the molecular conformation was changed by the electric field resulting in more end-groups being adsorbed on the disk surface when the electric field is applied during the withdrawal of the disk from the solution than during the normal dip process. As a result, the surface free energy decreased. As a consequence of applying the electric field during dipping and withdrawing, the thickness of the QA-40 layer increased 1 - 3 Å. |
| format |
article |
| author |
Hiroshi Tani Masami Kubota Masayuki Kanda Motohiro Terao Norio Tagawa |
| author_facet |
Hiroshi Tani Masami Kubota Masayuki Kanda Motohiro Terao Norio Tagawa |
| author_sort |
Hiroshi Tani |
| title |
Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| title_short |
Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| title_full |
Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| title_fullStr |
Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| title_full_unstemmed |
Electric-Field-Assisted Dip-Coating for Ultra-Thin PFPE Lubricant Film on Magnetic Disks- Molecular Conformation Change by Electric Field - |
| title_sort |
electric-field-assisted dip-coating for ultra-thin pfpe lubricant film on magnetic disks- molecular conformation change by electric field - |
| publisher |
Japanese Society of Tribologists |
| publishDate |
2011 |
| url |
https://doaj.org/article/d9c53332a33b48889bc526a4010b6cc9 |
| work_keys_str_mv |
AT hiroshitani electricfieldassisteddipcoatingforultrathinpfpelubricantfilmonmagneticdisksmolecularconformationchangebyelectricfield AT masamikubota electricfieldassisteddipcoatingforultrathinpfpelubricantfilmonmagneticdisksmolecularconformationchangebyelectricfield AT masayukikanda electricfieldassisteddipcoatingforultrathinpfpelubricantfilmonmagneticdisksmolecularconformationchangebyelectricfield AT motohiroterao electricfieldassisteddipcoatingforultrathinpfpelubricantfilmonmagneticdisksmolecularconformationchangebyelectricfield AT noriotagawa electricfieldassisteddipcoatingforultrathinpfpelubricantfilmonmagneticdisksmolecularconformationchangebyelectricfield |
| _version_ |
1718444379772813312 |