Method for producing aluminum platter
AssigneeKao Corporation
InventorKeisuke Ando
Life of this patent
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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.
Claims14
A method for producing an aluminum platter, the method comprising the following steps 1 and 2, and conducting the step 1 immediately before the step 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,
- where, in the formula (I), R1 is at least one selected from an ethylene group, a propylene group, and an isopropylene group, and * represents a bond.
Dependencies are inferred from the claim text.