Compound body
AssigneeFried. Krupp Gesellschaft mit beschrankter Haftung
InventorsKlaus Dreyer, Hans Grewe, Johannes Kolaska, Norbert Reiter
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Abstract
A compound body comprising a metallic basic body, an inner layer or layers of carbides and/or nitrides of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Si, or B, and an outer layer or layers of a mixture of oxides and nitrides and/or oxynitrides of Cr, Al, Ca, Mg, Th, Sc, Y, La, Ti, Hf, V, Nb, or Ta. The compound body can be used as a part subject to wear, and for machining metallic materials.
Claims7
A compound body used as a part subject to wear and for machining metallic materials, comprising a metallic basic body and at least two superposed hard substance layers each free from binder metals, the two superposed hard substance layers comprising at least one inner layer disposed on the metallic basic body and at least one outer layer disposed on the inner layer, wherein the at least one inner layer disposed on said basic body comprises at least one compound selected from the group consisting of carbides and nitrides of the elements Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Si, and B, and wherein the at least one outer layer disposed on said inner layer comprises at least one oxide and at least one nitride and/or at least one oxynitride of the elements Cr, Al, Ca, Mg, Th, Sc, Y, La, Ti, Zr, Hf, V, Nb, and Ta, the nitrogen content of said outer layer being about 0.1 to about 30 atom percent for each outer layer that is present.
Dependencies are inferred from the claim text.