| 摘要 |
<p>The present invention refers to a piston ring, particularly for use in the piston channel of an internal combustion engine or a compressor, comprising at least a substantially ring-shaped metallic base (2) having at least a first region (20), at least a second region (21) and at least a gap (22), the first region (20) being positioned in a way substantially opposite to the gap (22), the ring comprising at least a nitrided layer (3) in the second region (21) and comprising at least reduction of the nitrided layer (3) in the first region (20), whereas the reduced nitrided layer (3) is at least partially blocked in the first region (20) due to the previous application of an intermediate layer (4).</p> |
