公开(公告)号：BE793406A

公开(公告)日：1973-04-16

申请号：BE793406D

Applicant: IBM

Inventor： CHAUDHARI P ,  FEDER R ,  ROSENBERG R

IPC: C08J5/16 ,  C23C14/24 ,  C23C14/34 ,  C23C30/00 ,  C25D7/00 ,  C25D7/10 ,  F16C33/12 ,  F16C33/20 ,  G11B5/187 ,  G11B5/72 ,  G11B ,  C08J

Abstract: 1395738 Records INTERNATIONAL BUSINESS MACHINES CORP 25 Oct 1972 [30 Dec 1971] 49105/72 Heading G5R [Also in Division C7] A wear resistant surface is provided on a first component, e.g. a magnetic disc or tape of granular material having a predetermined grain size, for sliding mechanical contact by a second component, e.g. a magnetic transducer head movable over the surface, by forming on the first component a layer of granular polycrystalline material, e.g. Au or Ni having a grain size of 10 to 1000Š, less than that of the first component, to reduce the development of a wear track caused by an asperity of the face of the second component. A polycrystalline Ni layer may-be electroplated from a solution comprising 218 g/l NiCl 2 .6H 2 O, 25 g/l H 3 BO 3 , 1À64 g/l Na saccharin and 10 drops of saturated 2- butyne 1,4 diol.