What are the properties and application characteristics of cobalt-based self-fluxing alloys

       Cobalt-based self-fluxing alloys are made of cobalt-chromium-tungsten alloys by adding boron and silicon elements. Cobalt is a metal with excellent heat, corrosion and oxidation resistance. When chromium is added to it, a part of chromium and cobalt form a solid solution, which plays a role in solid solution strengthening and further improves the oxidation resistance of cobalt-based alloys; a part of chromium forms compounds with boron and silicon in the alloy, which plays a role in dispersion strengthening of the alloy and improves the alloy's resistance to oxidation. Heat resistance. The remaining tungsten forms a compound compound with chromium to improve the hardness and wear resistance of the alloy.

    Cobalt-based self-fluxing alloy powder is the alloy powder with the best comprehensive properties among all self-fluxing alloy powders. It has good heat resistance, thermal shock resistance, creep resistance, wear resistance, corrosion resistance and other properties. It can still maintain high hardness and oxidation resistance up to 1080 degrees Celsius at temperatures up to 800 degrees Celsius. higher cost.

    Cobalt-based self-fluxing alloy powder is mainly used in the repair of high-pressure pump plungers, intake and exhaust valves of internal combustion engines, exhaust fan blades, and aircraft engine parts, and is especially suitable for turbine blades and fuel nozzles that require high temperature creep resistance under hot corrosion conditions. , High temperature and high pressure valve sealing surface spraying, etc.