Method for producing aluminum platter
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United States of America Patent
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Sep 20, 2022
Grant Date -
Mar 4, 2021
app pub date -
Dec 27, 2017
filing date -
Dec 27, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
In one aspect, the present disclosure provides a method for producing an aluminum platter, which can improve the smoothness of the substrate surface before a magnetic layer is formed thereon and can provide a hard disk substrate that can be processed into a medium with a high yield. In another aspect, the present disclosure relates to a method for producing an aluminum platter, including the following steps 1 and 2: step 1: bringing a composition containing a compound (component A) that has at least one structure represented by the following formula (I) and has a molecular weight between 50 and 100,000 inclusive into contact with a substrate surface of a Ni—P plated aluminum alloy substrate; and step 2: forming a magnetic layer on the substrate obtained in the step 1.
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