Patent ID: 9132508
Filing Date: 2015-09-15
Classification: B23K,B23P,C23C,F01D,F05D,Y02T,Y10T

Abstract:
1. A blade for a gas turbine, the blade comprising: a blade leaf formed from at least one first material and having an upper portion proximate to a free end and a lower portion proximate to a fixable end; a blade root formed from at least one second material disposed on the lower portion of the blade leaf so as to establish a form-locking connection therebetween, the blade root having wherein the blade leaf extends through the blade root in the direction of the fixable end past the blade root lower end; wherein the lower portion of the blade leaf extending past the blade root lower end is enlarged in cross-section in comparison with the rest of the blade leaf above the blade platform to form at least part of the form-locking connection; and wherein the at least one second material is a thermally sprayed material that is different from the at least one first material and is more ductile in relation to the at least one first material; and wherein the lower portion of the blade leaf extends past the blade root lower end and includes a substantially T-shaped holding section with a substantially constant rectangular cross-section abutting the blade root lower end and extending from the blade root lower end to a lower end of the blade leaf.