摘要
以NbC粉末和Ni粉末为原料,采用微波烧结技术制备了NbC-10 vol%Ni金属陶瓷,研究烧结温度和保温时间对NbC-10 vol%Ni金属陶瓷组织与力学性能的影响。结果表明:采用微波加热烧结可以在较短时间内获得组织均匀细小且完全致密的NbC-10 vol%Ni金属陶瓷材料。随着烧结温度的升高和保温时间的延长,NbC-10 vol%Ni金属陶瓷的断裂韧性和弯曲强度呈现先升高后降低的趋势。在1390℃保温15 min时NbC-10 vol%Ni金属陶瓷具有较高的综合力学性能,其弯曲强度、维氏硬度与断裂韧性分别为1139 MPa、1119 HV30和12.5 MPa·m1/2。
Using NbC powder and Ni powder as raw materials, NbC-10 vol%Ni cermet was prepared by microwave sintering technology. The effects of sintering temperature and holding time on microstructure and mechanical properties of the NbC-10 vol%Ni cermet were studied. The results show that the NbC-10 vol%Ni cermet material with uniform, fine and completely dense microstructure can be obtained in a short time by microwave sintering. With the increase of sintering temperature and holding time, the fracture toughness and transverse rupture strength of the NbC-10 vol%Ni cermet increases first and then decreases. The Nbc-10 vol%Ni cermet which prepared by microwave sintering at 1390 ℃ for 15 min has high comprehensive mechanical properties, and its transverse rupture strength, Vickers hardness and fracture toughness are 1139 MPa, 1119 HV30 and 12.5 MPa·m1/2, respectively.
作者
杨植富
唐思文
张浩
刘骞
吕峥
YANG Zhi-fu;TANG Si-wen;ZHANG Hao;LIU Qian;LÜZheng(Hunan Provincial Key Laboratory of Mechanical Equipment Health Maintenance,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Defense Laboratory of High Temperature Wear Materials and Preparation Technology,Hunan University of Science and Technology,Xiangtan 411201,China;Engineering Research Center of Mining Development Technology and Equipment for Deep Sea and Earth,Ministry of Education,Xiangtan 411201,China)
出处
《材料热处理学报》
CAS
CSCD
北大核心
2022年第12期10-18,共9页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(52275424,52075168)
湖南省自然科学基金(2020JJ4308)
湖南省教育厅科学研究项目(18B230)
湖南科技大学卓越学子计划
广西制造系统与先进制造技术重点实验室开放基金(22-35-4-S009)。
