Solder alloy and method for repairing a part

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This patent describes a specialized solder alloy based primarily on nickel and containing gallium and/or germanium as essential elements. The alloy is designed for repairing metallic components, particularly those made from nickel or cobalt-based superalloys, often used in high-temperature environments like turbine blades and combustion chambers. The repair process uses the solder alloy at a minimum temperature of about 1140°C, efficiently filling cracks or voids without melting or harming the base material.

Use CasesContent extracted from patent full text and abstract with AI.

• Repairing cracks or voids in turbine blades for gas or steam turbines.
• Refurbishing combustion chamber elements in power plant or aerospace applications.
• Maintenance and repair of nickel- or cobalt-based superalloy components exposed to high thermal stress.
• Restoration of worn or damaged surfaces on industrial engine or aircraft engine components.
• Metal joining in situations where high strength and compatibility with superalloys is required.

BenefitsContent extracted from patent full text and abstract with AI.

• Allows high-strength repairs at temperatures lower than the melting point of base components, reducing the risk of damage.
• Enhanced suitability for high-temperature superalloys, making it ideal for critical engine or turbine parts.
• Avoids use of boron, silicon, and zirconium, reducing risk of undesirable phases and improving joint quality.
• Supports both isothermal and temperature gradient soldering processes, increasing flexibility for different repair strategies.
• Enables repair of both directionally solidified and single-crystal components, maintaining structural integrity in advanced engine parts.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

Solder alloys comprise gallium and/or germanium, the remainder being nickel : An independent claim is included for a method for repairing components (1) using solder alloys (10) as described at a minimum temperature of 1140[deg] C, especially a minimum temperature of 1160[deg] C.