项忠楠,李战江,常发,戴品强.(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)金属陶瓷的烧结致密化过程研究[J].稀有金属材料与工程,2020,49(10):3562~3568.[Xiang Zhongnan,Li Zhanjiang,Chang Fa,Dai Pinqiang.Study on Sintering Densification Process of (Ti,W,Mo,Ta,Nb,Zr)(C,N)-(CO,Ni) cermet[J].Rare Metal Materials and Engineering,2020,49(10):3562~3568.]
(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)金属陶瓷的烧结致密化过程研究
投稿时间:2019-11-03  修订日期:2019-11-28
中文关键词:  金属陶瓷  烧结温度  成分  组织结构  强韧性
基金项目:福建省科技重大专项资助(2017HZ0001-1),福建省高校产学合作项目资助(2019H6022)
中文摘要:
      本文研究了(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)基金属陶瓷材料烧结致密化过程、烧结过程中金属陶瓷的成分、组织结构和性能的变化,初步探讨烧结工艺控制对成分、组织结构和性能的影响。研究结果表明:(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)基金属陶瓷致密化过程中,合金因烧结而引起的质量损失在液相出现前的固相烧结阶段基本结束;而1340℃以后,由于液相的出现,合金的体积收缩和密度急剧上升。烧结过程中氮含量的变化趋势与合金磁性能的变化趋势一致,金属陶瓷合金成分中氮含量的变化对合金固溶体的形成有显著的影响。在1490℃烧结温度下,(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)金属陶瓷的综合力学性能最佳,而通过合适的N2分压烧结工艺,可以实现对(Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni)基金属陶瓷强韧性的进一步提升。
Study on Sintering Densification Process of (Ti,W,Mo,Ta,Nb,Zr)(C,N)-(CO,Ni) cermet
英文关键词:Cermet  Sintering temperature  Composition  Microstructure  Strength and toughness
英文摘要:
      In this paper, the sintering densification process of (Ti,W,Mo,Ta, Nb,Zr)(C,N)-(Co,Ni) based cermet was studied. The effects of sintering process on composition, microstructure and properties were discussed. The results show that during the densification process of (Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni) based cermets, the mass loss caused by sintering basically ends at the solid phase sintering stage. When the sintering temperature is above 1340℃, the volume shrinkage and density of the alloy increase sharply due to the appearance of liquid phase. The change of nitrogen content in cermet during the sintering process is consistent with the change of magnetic properties of the alloy, and the nitrogen content has a significant effect on the formation of solid solution. When the sintering temperature is 1490 ℃, the comprehensive mechanical properties of (Ti,W,Mo,Ta,Nb,Zr)(C,N)-(Co,Ni) cermets are the best, and the strength and toughness of the cermets can be further improved by the appropriate control of N2 partial pressure at sintering temperature.
作者单位E-mail
项忠楠 福州大学材料科学与工程学院 1801124@163.com 
李战江 福建工程学院材料科学与工程学院  
常发 福建工程学院材料科学与工程学院福建 福州 350118  
戴品强 福州大学材料科学与工程学院  
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