Ultra-smooth as-deposited electroless nickel coatings

Details Ultra-smooth as-deposited electroless nickel coatings Ultra-smooth as-deposited electroless nickel coatings

1998-07-27

2000-08-22

Kiliman, Leszek

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Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428694T, 428694TS, 428694SG, 428800, 427304, 427305, 427306, 427128, 427129, 427130, G11B 566

Patent

active

061069272

ABSTRACT:
Ultra smooth as-deposited electroless nickel coatings are achieved employing a plating bath containing aluminum and/or copper ions. Embodiments include electroless deposition of an amorphous nickel-phosphorous coating on a glass, glass-ceramic, ceramic, or aluminum-containing substrate, with an as deposited average surface roughness (Ra) of less than about 16 .ANG., depositing an underlayer, and depositing a magnetic layer to form a magnetic recording medium.

REFERENCES:
patent: 5141778 (1992-08-01), Yorkosky
"The Electroless Nickel Process for Memory Disks", J.B. Hajdu, E.F. Yarkosky, P.A. Cacciatore, M.H. Suplicki. Electrochemically Society Magnectic Materials, Processes, and Devices. Electro Deposition Division Proceedings vol. 92-10, pp. 39-55.

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