Reactive Sealing of Titanium Aluminide Coatings on Workpieces Using Reactive Solder

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This patent describes a method for sealing at least part of a layer made of titanium aluminide that has been applied to a workpiece. The process involves applying a reactive brazing alloy based on titanium to at least part of the titanium aluminide layer on the workpiece, without preheating the workpiece. Then, the workpiece is heat-treated in an evacuated vacuum furnace at a temperature above 900°C, enabling a reactive sealing of the titanium aluminide layer.

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• Manufacturing of turbine blades or other engine components where titanium aluminide coatings are used for high-temperature resilience.
• Repair or maintenance of aerospace or automotive parts with titanium aluminide surfaces, improving durability and longevity.
• Industrial production of corrosion-resistant components for chemical processing and energy sectors.

BenefitsContent extracted from patent full text and abstract with AI.

• Enhanced sealing of titanium aluminide layers increases resistance to oxidation and wear at high temperatures.
• The process does not require preheating, simplifying manufacturing steps and reducing energy costs.
• Reactive brazing improves bonding and structural integrity, leading to greater reliability and lifespan of coated parts.
• Applicability in vacuum environments enables production of high-performance components for demanding industries such as aerospace.

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Patent Abstract

The invention relates to methods for at least partially reactively sealing at least one layer applied to a workpiece consisting of a titanium aluminide and uses of a reactive solder applied to at least one region of a workpiece with a layer of a titanium aluminide. These are characterized in particular by the at least partially reactive sealing of at least one layer of a titanium aluminide applied to a workpiece. For this purpose, a reactive solder made of a titanium-based material is applied to the region of the layer of the workpiece, wherein the workpiece is not preheated. Furthermore, the workpiece with the layer of titanium aluminide and the reactive solder is heat-treated in an evacuated vacuum furnace at a temperature greater than 900 °C.