Magnetic disk substrate and method of manufacturing the same
A magnetic disk substrate comprising 0.5 wt% to 1.0 wt% of Mo, 0.03 wt% to 0.5 wt% of O + 2N + 0.75C, and a balance of Ti. The alloy plate having a composition of above range is cold-rolled at a rolling ratio of 30% or more to form a magnetic disk substrate material, and the material is thermal-flat...
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| Main Authors | , , |
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| Format | Patent |
| Language | English French German |
| Published |
31.08.1994
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| Edition | 5 |
| Subjects | |
| Online Access | Get full text |
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| Abstract | A magnetic disk substrate comprising 0.5 wt% to 1.0 wt% of Mo, 0.03 wt% to 0.5 wt% of O + 2N + 0.75C, and a balance of Ti. The alloy plate having a composition of above range is cold-rolled at a rolling ratio of 30% or more to form a magnetic disk substrate material, and the material is thermal-flattened under the following condition: 500 </= T </= -(150/11).t + 7850/11 1 </= t where T represents a thermal-flattening temperature ( DEG C), and t represents a thermal-flattening time (houre), thereby obtaining a magnetic disk substrate having the average grain size of 30 mu m or less. |
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| AbstractList | A magnetic disk substrate comprising 0.5 wt% to 1.0 wt% of Mo, 0.03 wt% to 0.5 wt% of O + 2N + 0.75C, and a balance of Ti. The alloy plate having a composition of above range is cold-rolled at a rolling ratio of 30% or more to form a magnetic disk substrate material, and the material is thermal-flattened under the following condition: 500 </= T </= -(150/11).t + 7850/11 1 </= t where T represents a thermal-flattening temperature ( DEG C), and t represents a thermal-flattening time (houre), thereby obtaining a magnetic disk substrate having the average grain size of 30 mu m or less. |
| Author | MINAKAWA, KUNINORI SUENAGA, HIROYOSHI FUKAI, HIDEAKI |
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| Discipline | Medicine Chemistry Sciences Physics |
| DocumentTitleAlternate | Substrat für eine Magnetplatte und Verfahren zu seiner Herstellung. Substrat pour un disque magnétique et son procédé de fabrication. |
| Edition | 5 |
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| Notes | Application Number: EP19900111229 |
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| PublicationDate | 19940831 |
| PublicationDateYYYYMMDD | 1994-08-31 |
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| PublicationYear | 1994 |
| RelatedCompanies | NKK CORPORATION |
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| Snippet | A magnetic disk substrate comprising 0.5 wt% to 1.0 wt% of Mo, 0.03 wt% to 0.5 wt% of O + 2N + 0.75C, and a balance of Ti. The alloy plate having a composition... |
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| Title | Magnetic disk substrate and method of manufacturing the same |
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