公开(公告)号：DE3367295D1

公开(公告)日：1986-12-04

申请号：DE3367295

申请日：1983-06-29

Applicant: IBM

Inventor： HOMOLA ANDREW MARIAN ,  LORENZ MAX RUDOLPH ,  SUSSNER HEINRICH

IPC: G11B5/712 ,  C09D5/23 ,  C09D7/12 ,  G11B5/82 ,  G11B5/84 ,  G11B5/842 ,  H01F41/16 ,  H01F41/24

Abstract: A monolayer magnetic coating is prepared by applying magnetic particles which have an electrostatic charge in an aqueous environment to an active layer on a substrate, the active layer having an electrostatic charge in an aqueous environment opposite to the charge on the magnetic particles so that the particles bond to the active layer. The magnetic particles are dispersed in an electrolyte (eg Na Cl) and the concentration of the electrolyte is adjusted to reduce the coulombic repulsive forces between the particles, permitting them to move closer together and thereby increasing the magnetic particle packing density in the resultant magnetic coating.

公开(公告)号：DE3462076D1

公开(公告)日：1987-02-19

申请号：DE3462076

申请日：1984-05-28

Applicant: IBM

Inventor： HOMOLA ANDREW MARIAN ,  SUSSNER HEINRICH

IPC: G11B5/72 ,  C10M103/00 ,  C10N40/18 ,  G11B5/64 ,  G11B5/66 ,  G11B5/71 ,  G11B5/725

Abstract: A magnetic disk is lubricated by being overcoated first with a permanently bound monolayer of silica spheres about 7 nm in diameter and on top of said monolayer a skin-like film of amorphous silica about 2 to 13 nm thick.