Yttria-coated refractory metal component
AssigneePlansee SE
InventorsRobert Schiftner, Katrin Knittl, Thomas Huber, Michael Mark
Life of this patent
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Abstract
A component formed of a refractory metal has a surface that is at least partially coated with a layer of yttria. There is also described a method of manufacturing a coated component, and the application of Y2O3 as a release agent in high temperature applications.
Claims6
A component consisting of a metal selected from the group consisting of zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, rhenium, and an alloy of said metals and having a surface at least partially coated with a layer of yttrium oxide, and the component being a threaded component formed with a thread, and wherein the component with the layer of yttrium oxide is temperature-resistant at high temperatures between 1000° C. and 2000° C., and the component remains non-destructively detachable from a screw connection after use at the high temperatures.
A method of manufacturing a component, the method comprising:
- providing a component body consisting of a metal selected from the group consisting of zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, rhenium, and an alloy of said metals;
- the component being a threaded component and the component body being formed with a thread;
- and
- at least partially coating a surface of the component body with a layer of yttrium oxide by slurry coating to render the component temperature-resistant at high temperatures between 1000° C. and 2000° C., and to render the component non-destructively detachable from a screw connection after use at the high temperatures.
Dependencies are inferred from the claim text.