Non gamma - phase cubic alcro

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 30/00 (2006.01) B23B 27/00 (2006.01) B23B 27/02 (2006.01) B23B 27/08 (2006.01) B23B 27/14 (2006.01)

Patent

CA 2736143

The present invention relates to a coating for workpieces with at least one layer, the at least one layer comprising metal components represented by AIxCr1-x wherein x is an atomic ratio meeting 0<=x<=0.84 and comprising non metallic components represented by 01-yZy where Z is at least one Element selected from the group N, B, C and 0<=y<=0.65, preferably y<=0.5 characterized in that the coating comprises at least partially a cubic non gamma Cr and oxide comprising phase in such a way that the x-ray diffraction pattern shows formation of cubic phase which is not the cubic phase of CrN.

La présente invention porte sur un revêtement pour pièces à travailler avec au moins une couche, la au moins une couche comprenant des composants métalliques représentés par AlxCr1-x, x étant un rapport atomique satisfaisant à 0 = x = 0,84, et comprenant des composants non métalliques représentés par O1-yZy, Z étant au moins un élément choisi dans le groupe N, B, C, et 0 = y = 0,65, et, de préférence, y = 0,5, caractérisé en ce que le revêtement comprend au moins partiellement un Cr non gamma cubique et un oxyde comprenant une phase d'une telle manière que le motif de diffraction de rayons X présente une formation de phase cubique qui n'est pas la phase cubique de CrN.

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