Hard composite layer, with a hard composite layer coated the tool and the layer-forming processes are advantageous

摘要

Hard composite layer with an excellent wear resistance, in which a plurality of first layers and second layers alternately on a surface of a predetermined element are stacked, wherein the compositions of the first layer and the second layer are different, characterized in that:the first layer (al_xCr_{1 - x - y}Y_y)(B_aC._bO_c.N_{1 - a - b - c}) contains [wherein for the ranges of x, y, a, b and c in the atomic ratio in each case 0,3 ≦ x ≦ 0,8, 0 y ≦ 0,10, 0 ≦ a ≦ 0,2, 0 ≦ b ≦ 0,3 and 0 ≦ c ≦ 0,1 applies] and by a pvd - a method with a target of the al_xCr_{1 - x - y}Y_y is designed;the second layer m (b_dC._eO_fN_{1 - d - e - f}) contains [where m is a metal from a single element or an alloy is, the two or more types of metal elements, which consists of the group iva, the group va, the group via of the periodic table of the elements al, si, and y are selected, and for the regions of..