Abstract: The present invention relates to a cutting tool insert having a substrate and a coating, the coating is composed of one or more layers of refractory compounds of which at least one layer includes a composite structured (TiyAlxMe1?x?y)N layer, where Me is one of the element Zr, Hf, V, Nb, Ta, Cr, Mo, W or Si, defined by: x is between 0.60 and 0.80 the ratio, R=x/(x+y), is between 0.60 and 0.85 the sum of Ti and Al subscript, S=x+y, is between 0.7 and 1.0 the co-existence of crystalline hexagonal h-AlN and cubic c-(TiyAlxMe1?x?y)N as detected by X-ray diffraction (XRD), defined by the ratio between the area of the h-AlN (100) peak at approximately 33° 2? (=A(h-AlN)100) and the c-(TiyAlxMe1?x?y)N (200) peak at approximately 43° 2? (=A(c-(Ti,Al,Me)N)200) called K, i.e. K=A(h-AlN)100/A(c-(Ti,Al,Me)N)200. K is >0.08, and The FWHM (Full Width Half Maximum) value of the: c-(TibAlaMe1?a?b)N (200) peak is <1.4 °2? h-AlN (100) peak is between 0.2 and 1.5° 2?.

Abstract: The present invention relates to a cutting tool insert comprising a substrate and a coating. The coating composed of one or more layers of refractory compounds of which at least one layer comprises a so called MAX-phase defined as Mn+1AXn where n is 1, 2 or 3, M is one of the elements Ti, Zr, Hf, V, Nb, Ta, Cr or Mo, A is Al, Si or S, X is C, N and/or B.

Abstract: The present invention relates to a cutting tool insert having a substrate and a coating, the coating is composed of one or more layers of refractory compounds of which at least one layer includes a precipitation hardened (TiyAlxMe1-x-y)N based layer, where Me is one of the elements: Zr, Hf, V, Nb, Ta, Cr, Mo, W or Si, and: 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 subscripts, 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 on the 200 peak at approximately 43°2? (using Cu K? radiation) of the (TiyAlxMe1-x-y)N coating, according to FIG. 4, is higher than 7.5; the ratio between the area of the h-AlN (100) peak at approximately 33°2? (=A(h-AlN)100) and the c-(TiyAlxMe1-x-y)N (200) peak at approximately 43°2? (=A(c-(Ti,Al,Me)N)200) called K, i.e. K=A(h-AlN)100/A(c-(Ti,Al,Me)N)200 K is between 0 and 0.

Abstract: The present invention relates to a cutting tool insert having a substrate and a coating, the coating is composed of one or more layers of refractory compounds of which at least one layer includes a composite structured (TiyAlxMe1-x-y)N layer, where Me is one of the element Zr, Hf, V, Nb, Ta, Cr, Mo, W or Si, defined by:

Abstract: The present invention relates to a cutting tool insert having a substrate and a coating, the coating is composed of one or more layers of refractory compounds of which at least one layer includes a precipitation hardened (TiyAlxMe1-x-y)N based layer, where Me is one of the elements: Zr, Hf, V, Nb, Ta, Cr, Mo, W or Si, and:

Abstract: The present invention relates to a cutting tool insert comprising a substrate and a coating. The coating composed of one or more layers of refractory compounds of which at least one layer comprises a so called MAX-phase defined as Mn+1AXn where n is 1, 2 or 3, M is one of the elements Ti, Zr, Hf, V, Nb, Ta, Cr or Mo, A is Al, Si or S, X is C, N and/or B.