CoCrFeMnNi high-entropy alloy powder with excellent corrosion resistance and soft magnetic property prepared by gas atomization methodGasverdustes CoCrFeMnNi Hoch-Entropie Legierungspulver mit hervorragender Korrosionsbestandigkeit und weichmagnetischen Eigenschaften

To successfully fabricate high-entropy alloys by powder metallurgy, laser cladding, or thermal sprayed method, the high-entropy alloy powders possessing good homogeneous microstructure are very important. However, the study on the properties of the high-entropy alloy powder has still been lacking. In this work, an equiatomic CoCrFeMnNi high-entropy alloy powder with spherical shape was synthesized by gas atomization method. The as-atomized CoCrFeMnNi high-entropy alloy powder is composed of a single face-centered cubic solid solution phase with the particle size of 34.0 mu m. Furthermore, the as-atomized powder exhibits excellent corrosion resistance in 10 % hydrochloric acid solution to 304 L stainless steel powder, and also shows an excellent soft magnetic behavior. Therefore, the gas atomization method can be used to generate other kinds of high-entropy alloy powders for many challenging industrial applications.