公开(公告)号：SG52460A1

公开(公告)日：1998-09-28

申请号：SG1996004856

申请日：1993-07-23

Applicant: IBM

Inventor： DOERNER MARY FRANCES ,  YOGI TADASHI ,  WU ANTHONY WAI ,  LANE BRIAR RANCH ,  PARKER DAN STEPHEN

IPC: G11B5/72 ,  G11B5/73 ,  G11B5/738 ,  G11B5/82 ,  G11B5/84 ,  G11B5/851 ,  G11B25/04 ,  G11B33/14 ,  G11B5/66 ,  G11B5/62 ,  G11B5/70 ,  G11B5/85

Abstract: A magnetic recording disk has both an extremely smooth top surface and high coercivity, and is incorporated in a contact recording disk file which requires an extremely smooth head-disk interface and a disk with high coercivity. A superfinished untextured NiP coating on a disk substrate is oxidized to form a NiO film. The NiO film permits the subsequently sputter deposited magnetic layer to have much higher coercivity, which enables the disk to be used in contact recording applications. The NiO film and the later deposited layers making up the disk, including the top protective overcoat, conform to the smooth surface of the polished NiP, thus preserving the extremely smooth surface of the top layer of the disk, which is required for the head-disk interface in contact recording disk files. In the preferred process for forming the NiO film on the substrate, the substrate is annealed in air at a temperature below that which would cause the NiP film to crystallize.

公开(公告)号：SG47386A1

公开(公告)日：1998-04-17

申请号：SG1996000407

申请日：1992-12-07

Applicant: IBM

Inventor： FRANCO LUIS PADILLA ,  KAUFMAN JAMES HARVEY ,  METIN SERHAT ,  PALMER DANNY DEAN ,  SAPERSTEIN DAVID DORN ,  WU ANTHONY WAI

IPC: G11B5/64 ,  G11B5/72 ,  G11B5/73

Abstract: A thin film metal alloy magnetic recording disk has a protective nitrogen-containing carbon overcoat which is thinner and which exhibits better wear resistance, corrosion resistance, and hardness than conventional carbon overcoats without nitrogen. The nitrogen present in the disk overcoat substantially reduces the film stress. Because of the low stress of the overcoat film there is significantly less likelihood that the overcoat will delaminate, buckle, or otherwise wear away from the underlying magnetic layer during operation of the disk file. This allows for significantly reduced overcoat thickness, thus reducing the head-disk spacing in the disk file. The overcoat, even though significantly thinner than prior art carbon overcoats, exhibits better wear and corrosion resistance than carbon overcoats without nitrogen. In addition, when the carbon overcoat contains hydrogen, the presence of the nitrogen increases the hardness of the film if present in a specific amount dependent on the amount of hydrogen present.

公开(公告)号：DE3277344D1

公开(公告)日：1987-10-22

申请号：DE3277344

申请日：1982-05-28

Applicant: IBM

Inventor： BAISE ARNOLD IVAN ,  CZORNYJ GEORGE ,  WU ANTHONY WAI

IPC: H01L23/29 ,  G03F7/025 ,  G03F7/09 ,  G03F7/11 ,  H01L21/027 ,  H01L21/312 ,  H01L23/31 ,  H01L21/56 ,  G03C1/68

Abstract: A protective coating is formed on an integrated circuit device by coating the device with a solution of acetylene terminated, branched polyphenylene prepolymer material and heating the material to form a thermoset crosslinked polymer layer. Selectively patterned portions may be provided when, after the coating step and prior to the heating step, the steps of imagewise exposure to radiation and rinsing with an organic solvent are carried out.

公开(公告)号：DE2860918D1

公开(公告)日：1981-11-05

申请号：DE2860918

申请日：1978-12-01

Applicant: IBM

Inventor： CZORNYJ GEORGE ,  SWALEN JEROME DOUGLAS ,  WU ANTHONY WAI

IPC: B05D7/14 ,  B05D1/18 ,  B05D1/20 ,  B05D5/08 ,  B05D7/24 ,  C07C57/52 ,  C08F20/04 ,  C09D3/78

Abstract: A substrate surface is lubricated or passivated by applying thereto a monomolecular layer of a compound having the formula (CF3-(CF2)n-(CH2)m-X-COO)2M or (CF3-(CF2)n-(CH2)m-X-(CH2)L-COO)2M wherein n is 6 to 20, each of m and L is 6 to 10, X is -CH=CH- or -C IDENTICAL C-, and M is a divalent cation, and polymerizing said layer in situ.