Study on Preparation Technology of(Ti,Cr,V,Nb,Mo)(C,N)High-Entropy Ceramic Solid Solution Powders AITranslate

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Chinese Library Classification Number:TG148[金属学及工艺—金属材料]

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(Ti,Cr,V,Nb,Mo)(C,N)high-entropy ceramic solid solution powders were prepared via mechanical alloying plus carbothermal reduction-nitridation method with TiO₂,Cr₂O₃,V₂O₅,Nb₂O₅,MoO₃and carbon black as raw materials.The phase composition and microstructure of the reaction products were characterized using X-ray diffractometer(XRD)and scanning electron microscope(SEM).The results show that high-quality(Ti,Cr,V,Nb,Mo)(C,N)high-entropy ceramic solid solution powders with an average particle size of about 3μm,uniform element distribution and single phase composition were successfully synthesized at the carbothermal reduction-nitridation temperature of 1600℃with the ball milling speed and time of 600 r/min and 120 min.Carbonthermal reduction-nitridation temperature is the main factor affecting the synthesis of high-entropy ceramic solid solution powders,followed by ball milling speed,and the ball milling time has the least effect.Increasing carbonthermal reduction-nitridation temperature,ball milling speed and ball milling time are beneficial to solid solution of elements,but has a negative effect on inhibiting grain growth.