| 摘要 |
PURPOSE: To provide clutch separator plates improved in frictional characteristic, for use in a clutch or brake pack for an automatic transmission for vehicles. CONSTITUTION: Separator plate surfaces 44 are treated by a suitable surface treatment, such as lapping by use of a lapping compound of, e.g. diamond, to provide a surface texture of 76 to 229 nm (3-9μin) (Ra) or so. Thereafter, sputter coating of titanium nitride or a similar material 46 is provided thereover to provide the surface texture which enhances the frictional characteristics of the plate but does not substantially increase the wear of the lining of interleaved clutch plates.
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