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    7.
    发明专利
    未知

    公开(公告)号：DE60309992T2

    公开(公告)日：2007-09-20

    申请号：DE60309992

    申请日：2003-09-02

    Applicant: SECO TOOLS AB

    Inventor： HOERLING ANDERS ,  HULTMAN LARS ,  SJOELEN JACOB ,  KARLSSON LENNART

    IPC: C23C16/34 ,  C23C14/06 ,  C23C14/58 ,  C23C30/00

    Abstract: The present invention relates to a cutting tool insert comprising a substrate and a coating. The coating is composed of one or more layers of refractory compounds of which at least one layer comprises a so called precipitation hardened (TiyAlxMe1-x-y)N based layer, where Me is one of the element Zr, Hf, V, Nb, Ta, Cr, Mo, W or Si. This layer is defined by: x is between 0.50 and 0.80, the ratio, R=x/(x+y), is between 0.50 and 0.85, the sum of Ti and Al subscript, S=x+y, is between 0.7 and 1.0 the ratio of the peak width, F10/90, (FW10%M or FW90%M meaning Full Width at 10% and 90% of the maximum peak value reduced with the background) measured using X-ray diffraction with Cu K alpha radiation of the 200 peak at approximately 43 DEG 2&thetas; of the (TiyAlxMe1-x-y)N coating is higher than 7.5, the ratio between the area of the h-AlN (100) peak at approximately 33 DEG 2&thetas; (=A(h-AlN)100) and the c-(TiyAlxMe1-x-y)N (200) peak at approximately 43 DEG 2&thetas; (=A(c-(Ti,Al,Me)N)200) called K, i.e. K=A(h-AlN)100/ A(c-(Ti,Al,Me)N)200, and K is between 0 and 0.3 and the layer consists of a single (TiyAlxMe1-x-y)N (200) peak.

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