Coating processes – Magnetic base or coating – Magnetic coating
Patent
1993-12-22
1995-08-01
Pianalto, Bernard
Coating processes
Magnetic base or coating
Magnetic coating
427132, 427406, 4274431, 428900, 428928, 428611, H01F 1002
Patent
active
054378877
ABSTRACT:
A method is provided for producing paramagnetic electroless nickel-phosphorus (ENP) coatings on zincated aluminum substrates using an ENP bath containing antimony and/or cadmium ions and/or an adjusting operating pH, which coated substrates have enhanced retention of their paramagnetic properties after being exposed to elevated temperatures on the order of 310.degree. C. as, for example, when the ENP coated substrate is further treated by sputtering operations to form another metal layer on the coated substrate to produce magnetic memory disks.
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Cacciatore Patricia A.
Friday Deborah
Yarkosky Eugene F.
Enthone-OMI Inc.
Pianalto Bernard
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