(Ti,Cr,V,Nb,Mo)(C,N)高熵陶瓷固溶体粉末的制备工艺研究  

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

作　　者：唐鑫 金永中 吴翔[3] 苏伟 蒋武 汪俊豪 谢瑞 TANG Xin;JIN Yong-zhong;WU Xiang;SU Wei;JIANG Wu;WANG Jun-hao;XIE Rui(School of Materials Science and Engineering,Sichuan University of Science and Engineering,Zigong 643000,China;Material Corrosion and Protection Key Laboratory of Sichuan Province,Zigong 643000,China;Zigong Cemented Carbide Co.,Ltd.,Zigong 643011,China)

机构地区：[1]四川轻化工大学材料科学与工程学院,四川自贡643000 [2]材料腐蚀与防护四川省重点实验室,四川自贡643000 [3]自贡硬质合金有限责任公司,四川自贡643011

出　　处：《稀有金属与硬质合金》2025年第1期66-72,共7页Rare Metals and Cemented Carbides

基　　金：四川省自然科学基金项目(2022NSFSC0342);材料腐蚀与防护四川省重点实验室开放基金项目(2021CL05)。

摘　　要：以TiO_(2)、Cr_(2)O_(3)、V_(2)O_(5)、Nb_(2)O_(5)、MoO_(3)和炭黑为原料,采用机械合金化+碳热还原氮化法制备高熵陶瓷固溶体粉末(Ti,Cr,V,Nb,Mo)(C,N),并借助XRD、SEM等表征手段对反应产物的物相组成和微观组织进行了分析。结果表明:在碳热还原氮化温度1600℃、球磨转速600 r/min和球磨时间120 min下,产物为平均粒径约3μm、元素分布均匀且具有单一相成分的高品质(Ti,Cr,V,Nb,Mo)(C,N)高熵陶瓷固溶体粉末。碳热还原氮化温度是影响高熵陶瓷固溶体粉末合成的主要因素,其次是球磨转速,而球磨时间影响最小。增加碳热还原氮化温度、球磨转速和球磨时间在不同程度上均有利于元素固溶,但对抑制晶粒长大有负面影响。(Ti,Cr,V,Nb,Mo)(C,N)high-entropy ceramic solid solution powders were prepared via mechanical alloying plus carbothermal reduction-nitridation method with TiO_(2),Cr_(2)O_(3),V_(2)O_(5),Nb_(2)O_(5),MoO_(3)and 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.

关 键 词：(Ti Cr V Nb Mo)(C N) 高熵陶瓷固溶体 机械合金化 球磨 碳热还原氮化 物相组成 微观组织 

分 类 号：TG148[一般工业技术—材料科学与工程]