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US 8,404,369 B2Granted
Electroless coated disks for high temperature applications and methods of making the same
AssigneeWD Media, LLC
InventorsAlan J. Ruffini, Lindsey A. Hamilton, Dorothea Buechel-Rimmel, Jean M. LaPlante, Ambrose Schaffer, Frederick Lowes
Life of this patent
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Abstract
A disk for a hard disk drive is provided. The disk comprises a substrate comprising aluminum, and a coating layer disposed over the substrate. The coating layer comprises an alloy of Ni, X1 and X2, wherein X1 comprises one or more elements selected from the group consisting of Ag, Au, B, Cr, Cu, Ga, In, Mn, Mo, Nb, Pb, Sb, Se, Sn, Te, W, Zn and Zr, and wherein X2 comprises either B or P, and wherein X1 and X2 do not comprise the same elements.
Claims11
A disk for a hard disk drive, comprising:
- a substrate comprising aluminum;
- and
- a coating layer disposed over the substrate, the coating layer comprising an alloy of Ni, X1 and X2,
- wherein X1 comprises Cu and an element selected from the group consisting of B, In, Mo, and W,
- wherein X2 comprises either B or P,
- wherein X1 and X2 do not comprise the same elements, and
- wherein the alloy comprises between about 1.5 and about 42 weight percent of each constituent of X1 and between about 3 and about 11 weight percent X2.
4 more elements
Dependencies are inferred from the claim text.