ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME, ALUMINUM ALLOY BASE DISK FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME, AND MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME
An aluminum alloy substrate for a magnetic disk including an aluminum alloy containing 0.1 to 3.0 mass% of Fe, 0.005 to 1.000 mass% of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and inevitable impurities, wherein in an outer peripheral surface thereof, the number of holes having maxim...
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| creator | MURATA Takuya HATAKEYAMA, Hideyuki OTA, Hiroki YONEMITSU Makoto KITAWAKI Kotaro SAKAMOTO Ryo |
| description | An aluminum alloy substrate for a magnetic disk including an aluminum alloy containing 0.1 to 3.0 mass% of Fe, 0.005 to 1.000 mass% of Cu, and 0.005 to 1.000 mass % of Zn, with a balance of Al and inevitable impurities, wherein in an outer peripheral surface thereof, the number of holes having maximum diameters of 10 ?m or more is 200/mm2 or less, an aluminum alloy base disk for a magnetic disk and a magnetic disk, using the aluminum alloy substrate, and methods for manufacturing these. |
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| subjects | ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PHYSICS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME, ALUMINUM ALLOY BASE DISK FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME, AND MAGNETIC DISK AND METHOD FOR MANUFACTURING SAME |
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