ADDITIVE MANUFACTURE OF TURBINE COMPONENT WITH MULTIPLE MATERIALS

摘要

A method for additive manufacturing with multiple materials. First (48) , second (50), and third (52) adjacent powder layers are delivered onto a working surface (54A) in respective first (73) , second (74) , and third (75) area shapes of adjacent final materials (30 , 44 , 45) in a given section plane of a component (20). The first powder may be a structural metal delivered in the sectional shape of an airfoil substrate (30). The second powder may be a bond coat material delivered in a sectional shape of a bond coat (45) on the substrate. The third powder may be a thermal barrier ceramic delivered in a section shape of the thermal barrier coating (44). A particular laser intensity (69A, 69B) is applied to each layer to melt or to sinter the layer. Integrated interfaces (57 , 77 , 80) may be formed between adjacent layers by gradient material overlap and/or interleaving projections.