| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved, or at least an alternative embodiment of a gas exchange valve.SOLUTION: A gas exchange valve (1) of an internal combustion engine may include a valve plate (2) and a valve stem (3). A nickel-phosphorus layer (4) is disposed on at least a part of the valve stem (3). The nickel-phosphorus layer (4) has a phosphorus content greater than 10 vol.%, and in particular being 11-13 vol.%.SELECTED DRAWING: Figure 1 |
