Cobalt-based Alloy Comprising Germanium and Method for Soldering

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This patent describes a cobalt-based alloy containing germanium, which has a higher melting point than conventional nickel-based alloys used in high-temperature applications. The invention provides a new solder alloy and associated method for soldering, particularly suited for the repair or joining of components exposed to high operational temperatures, such as turbine blades. The alloy is engineered to improve thermal resistance and mechanical strength, allowing for durable repairs and manufacturing of critical components operating under extreme conditions.

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• Repair and joining of turbine blades in power generation and aviation gas turbines
• Manufacture of components exposed to high temperatures, such as elements of steam turbines, compressors, or combustion chambers
• Joining and refurbishing of nickel-based superalloy components used in high-stress, high-temperature environments
• Production of coated and protected metallic surfaces requiring high corrosion and oxidation resistance
• Application in the aerospace, energy, and industrial manufacturing sectors where component reliability at high temperatures is critical

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• Enables higher operating and soldering temperatures than nickel-based alloys, increasing component performance in high-temperature conditions
• Provides enhanced corrosion and oxidation resistance, extending component lifespan
• Results in stronger, more homogeneous joints due to alloy and substrate compatibility
• Reduces formation of low-melting eutectics, improving joint integrity and mechanical properties
• Supports efficient and reliable repair of expensive, high-value parts, reducing the need for total replacement
• Offers flexibility in composition (with optional substitution of germanium with gallium or silicon) to tailor properties as needed for specific applications

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Patent Abstract

The invention relates to cobalt-based alloys comprising germanium having a higher melting point than nickel-based alloys, such that they are used advantageously for repairing or treating components used at high temperatures.