| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a turbine component 10 formed from a niobium silicide-based composition. <P>SOLUTION: The turbine component 10 can be compositionally-graded through at least a portion of its structure. A turbine blade 10 formed from a composition which includes a niobium silicide alloy is also described. The blade includes an airfoil 12, an airfoil tip region 31, a platform 24 on which the airfoil 12 is mounted, and a dovetail root 26 attached to an underside of the platform 24. The niobium silicide alloy in at least one portion of the turbine blade 10 is compositionally different from the niobium silicide alloy in another portion of the blade. Processes for fabricating a niobium silicide-based turbine article are also described, using laser cladding techniques. Repair methods are also set forth in the application. <P>COPYRIGHT: (C)2007,JPO&INPIT |
