In advanced materials, cobalt-based superalloys show superior properties than other materials in strength, elasticity, and many other aspects. Let us explore cobalt-based superalloys and understand what they are, their classifications, and where they can be applied.
What is a cobalt-based superalloy?
A cobalt-based superalloy is a high-performance material mainly composed of cobalt, which has good high-temperature and corrosion resistance—making it an alternative to traditional materials. Depending on the composition of the alloy, they can be made into welding wires, and the powder can be used for hard surfacing, thermal spraying, spray welding and other processes. It can also be made into castings forgings and powder metallurgy parts. Cobalt-based superalloys lack coherent strengthening phases. Although their medium-temperature strength is low (only 50-75% of nickel-based alloys), they have high strength, good resistance to thermal fatigue, hot corrosion, and corrosion resistance above 980°C. Wear resistance and good weldability. It is suitable for making guide vanes and nozzle guide vanes for aviation jet engines, industrial gas turbines, ship gas turbines, and diesel engine nozzles.
Classification of cobalt-based superalloys
Generally speaking, the classification of cobalt-based superalloys can start with microstructural characteristics, composition, and expected applications.
Common ones include the following:
Forged alloy: a product that uses forging, extrusion, and other processes to make the product have strong mechanical properties and processability. It is an alloy used in aerospace engineering and gas turbine engines.
Cast alloys: Using investment casting or directional solidification technology, alloys are designed into complex shapes for use in chemical processing equipment.
It is a directionally solidified (DS) alloy with anisotropic properties that can withstand high temperatures and resist corrosion.
Application fields of cobalt-based superalloys
Cobalt-based superalloys are widely used in various fields because of their excellent properties and diverse functions.
- Aerospace field: Cobalt-based superalloys are widely used in the aerospace field because of their high-temperature resistance and corrosion resistance, such as turbine blades, combustion chambers, exhaust nozzles, etc.
- Petrochemical industry: Cobalt-based high-temperature alloys play a vital role in power generation turbines, so the northern petrochemical industry needs them.
- Automotive industry: As the demand for high-performance engines continues to grow, cobalt-based high-temperature alloys are increasingly used to make parts requiring high temperature and corrosion resistance.
Suppliers of cobalt-based superalloys
As a supplier of cobalt-based superalloys, SYTOP has been providing customers with comprehensive services to meet the diverse needs of customers in different industries.
- Material selection and consultation: Use our professional knowledge and experience in cobalt-based high-temperature alloys to select the most suitable materials for customers. Provide one-on-one communication to understand customer needs, evaluate environmental conditions, and recommend the most appropriate alloy composition and processing technology.
- Custom alloys: Work with customers to develop custom cobalt-based alloys that best fit the customer’s unique specifications and performance standards. It is leveraging SYTOP’s expertise to provide customers with rigorous testing to ensure the quality of custom alloys.
- Supply chain management: Simplify the procurement process through comprehensive supply chain management services. To ensure a smooth continuation of the procurement process and shorten the delivery time as much as possible.
Through a series of comprehensive services, including material selection, customization cooperation, supply chain management, quality assurance, and many other aspects, SYTOP can become your trusted supplier. If your product needs are consistent with SYTOP, you can choose to build a lasting relationship. Promote the bridge of cooperation between us.
In general, cobalt-based superalloys are an innovation for humanity in materials science. Due to the excellent properties of the alloy itself, such as high temperature and corrosion resistance, cobalt-based superalloys will continue to expand discoveries in different industries.
