Methods for vapor depositing high temperature coatings on gas turbine engine components utilizing pre-alloyed pucks

摘要

Methods for vapor depositing high temperature coatings on gas turbine components are provided, as are methods for producing pre-alloyed pucks for usage in vapor deposition processes. In one embodiment, the method (10) includes the step of producing (14) a pre-alloyed puck including a master alloy and a high vaporization temperature refractory metal, which has a vaporization temperature greater than each of the master alloy constituents. The pre-alloyed puck is placed (16) over an ingot and heated (22) to a temperature greater than the melt point of the pre-alloyed puck and less than the vaporization temperature of the high vaporization temperature refractory metal to transform the puck and a portion of the ingot into a molten pool and to produce a vapor stream containing the constituents of the master alloy and the ingot. The vapor stream is exposed (22) to a gas turbine engine component to deposit the high temperature coating over at least one surface thereof.