ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISKS AND MAGNETIC DISK

To provide an aluminum alloy substrate for magnetic disks having excellent fluttering properties.SOLUTION: An aluminum alloy substrate for magnetic disks comprises an aluminum alloy containing 1.80 mass% or less of Fe, 0.70 mass% or less of Mn, 2.50 mass% or less of Ni, 2.50 mass% or less of Si, 1.0...

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Main Authors HATAKEYAMA HIDEYUKI, KITAWAKI KOTARO, SAKAMOTO RYO, KUMAGAI KO
Format Patent
LanguageEnglish
Japanese
Published 27.06.2022
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Abstract To provide an aluminum alloy substrate for magnetic disks having excellent fluttering properties.SOLUTION: An aluminum alloy substrate for magnetic disks comprises an aluminum alloy containing 1.80 mass% or less of Fe, 0.70 mass% or less of Mn, 2.50 mass% or less of Ni, 2.50 mass% or less of Si, 1.00 mass% or less of Cu, 0.48 mass% or less of Zn, and 1.00-3.50 mass% of Mg, with the remainder consisting of Al and unavoidable impurities, where the total content of Fe, Mn, and Ni is 1.60-4.50 mass%, and the mass ratio of Cu/Zn is 0.01-0.35 or 6.00-50.00.SELECTED DRAWING: Figure 1 【課題】良好なフラッタリング特性を有する磁気ディスク用アルミニウム合金基板を提供する。【解決手段】磁気ディスク用アルミニウム合金基板は、Fe:1.80mass%以下、Mn:0.70mass%以下、Ni:2.50mass%以下、Si:2.50mass%以下、Cu:1.00mass%以下、Zn:0.48mass%以下、Mg:1.00~3.50mass%、を含有し、FeとMnとNiの合計含有量が1.60~4.50mass%であり、Cu/Znの質量比が0.01~0.35、又は、6.00~50.00であり、残部Al及び不可避的不純物からなるアルミニウム合金からなる。【選択図】図1
AbstractList To provide an aluminum alloy substrate for magnetic disks having excellent fluttering properties.SOLUTION: An aluminum alloy substrate for magnetic disks comprises an aluminum alloy containing 1.80 mass% or less of Fe, 0.70 mass% or less of Mn, 2.50 mass% or less of Ni, 2.50 mass% or less of Si, 1.00 mass% or less of Cu, 0.48 mass% or less of Zn, and 1.00-3.50 mass% of Mg, with the remainder consisting of Al and unavoidable impurities, where the total content of Fe, Mn, and Ni is 1.60-4.50 mass%, and the mass ratio of Cu/Zn is 0.01-0.35 or 6.00-50.00.SELECTED DRAWING: Figure 1 【課題】良好なフラッタリング特性を有する磁気ディスク用アルミニウム合金基板を提供する。【解決手段】磁気ディスク用アルミニウム合金基板は、Fe:1.80mass%以下、Mn:0.70mass%以下、Ni:2.50mass%以下、Si:2.50mass%以下、Cu:1.00mass%以下、Zn:0.48mass%以下、Mg:1.00~3.50mass%、を含有し、FeとMnとNiの合計含有量が1.60~4.50mass%であり、Cu/Znの質量比が0.01~0.35、又は、6.00~50.00であり、残部Al及び不可避的不純物からなるアルミニウム合金からなる。【選択図】図1
Author KITAWAKI KOTARO
KUMAGAI KO
HATAKEYAMA HIDEYUKI
SAKAMOTO RYO
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Snippet To provide an aluminum alloy substrate for magnetic disks having excellent fluttering properties.SOLUTION: An aluminum alloy substrate for magnetic disks...
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SubjectTerms ALLOYS
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
METALLURGY
PHYSICS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
Title ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISKS AND MAGNETIC DISK
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