Wear protective layer useful for sliding element, comprises a matrix containing chromium, aluminum, nitrogen, oxygen and/or carbon, where metallic silver is stored in the matrix in the form of a solid solution

摘要

The wear protective layer (3) comprises a matrix containing chromium (25-45 atom %), aluminum (5-15 atom %), nitrogen (35-55 atom %), oxygen and/or carbon, where metallic silver (2-20 atom %) is stored in the matrix in the form of a solid solution or in the form of a separate phase. The portion of oxygen and/or carbon in the matrix is 5 atom%. The protective layer has a thickness of 5-70 mu m, hardness of 10-16 GPa, and a porosity of 2-15%. The protective layer has a residual stress of greater than 500 N/mm 2at room temperature and exists in the form of a multilayered system. The wear protective layer (3) comprises a matrix containing chromium (25-45 atom %), aluminum (5-15 atom %), nitrogen (35-55 atom %), oxygen and/or carbon, where metallic silver (2-20 atom %) is stored in the matrix in the form of a solid solution or in the form of a separate phase. The portion of oxygen and/or carbon in the matrix is 5 atom%. The protective layer has a thickness of 5-70 mu m, hardness of 10-16 GPa, and a porosity of 2-15%. The protective layer has a residual stress of greater than 500 N/mm 2at room temperature and exists in the form of a multilayered system, which is compounded from a sequence of single layer with different silver contents. The protective layer is produced by a physical vapor deposition. An independent claim is included for a sliding element.