The use of boron nitride ceramic and zirconia ceramic nozzles in different processes of powder metallurgy
In powder metallurgy (PM) processes, boron nitride and zirconia ceramic nozzles are used depending on the type of metal materials. Main Features of Ceramic Nozzles High-temperature resistance: withstands temperatures above 1500 ° C from molten metals or plasma flames. Wear resistance: resists erosion from powder or gas flow for long-term operation. Chemical inertness: does not react with active metals or gases. Applications at Different Stages of Powder Metallurgy Stage Process Functions of Nozzles Ceramic Nozzles Typical Metals Powder Preparation Gas Atomization High-pressure inert gas (such as nitrogen or argon) impinges on the molten metal stream to form fine powder; ceramic nozzles control flow and particle size. Boron Nitride and Zirconia High-purity or reactive metals such as titanium and nickel-based alloys. Water Atomization Ceramic nozzles provide corrosion resistance and precise flow control. Zirconia Used in high-...