| 摘要 |
A friction coupling for use in particular in the drive train of a motor vehicle includes a clutch casing, a pressure plate which is guided in a rotationally fixed manner with respect to the clutch casing, at least one clutch disk and a spring device containing about 40-60% nickel. A method for coating a nickel-base material, in particular the above mentioned spring element for friction clutches, wherein at least part of the surface of the spring device contains boride, and also a method for producing such a spring device which includes a heat treatment are also disclosed. |
