Fabrication and microstructure evolution of niobium-niobium silicide composites by spark plasma sintering

被引：0
作者：
Zhe Chen
Youwei Yan
机构：
[1] Huazhong University of Science & Technology,State Key Lab of Die & Mould Technology
来源：
Journal of Wuhan University of Technology-Mater. Sci. Ed. | 2007年 / 22卷
关键词：
spark plasma sintering; Nb/Nb; Si; composites; fabrication; microstructure evolution;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
By using Nb and Si elemental powders as raw materials, dense Nb/Nb5Si3 composites were successfully fabricated by a spark plasma sintering (SPS) technology. The microstructure of the fabricated composites was analyzed by OM, SEM, XRD and EPMA; the microstructure evolution of the composites was also investigated by a quenching test. The experimental results show that the prepared composites consist of Nb and Nb5Si3 phases; Nb particle uniformly distributes in the in-situ synthesized Nb5Si3 matrix. During the SPS process, an interfacial reaction occurs between Nb and Si particles to synthesize Nb5Si3 until reactant silicon has been completely depleted.
引用
收藏
页码：299 / 302
页数：3
相关论文
共 25 条
  • [1] Subramanian P. R.(1996)The Development of Nb-based Advanced Intermetallic Alloys for Structural Applications[J] JOM 48 33-38
  • [2] Mendiratta M. G.(1998)Challenge and Development Trends to Future Aero-engine Materials[J] Journal of Aeronautical Materials(in Chinese) 18 52-60
  • [3] Dimiduk D. M.(1996)The Balance of Mechanical and Environmental Properties of a Multielement Niobium-Niobium Silicide-Based In-situ composite[J] Metall. Trans. A 27A 3801-3808
  • [4] Fu H.-zhi.(1981)Toughtening of Glasses by Metallic Particles[J] J. Am. Cerm. Soc. 64 499-504
  • [5] Bewlay B. P.(1996)Resistance-Curve Toughening in Ductile/brittle Layered Structures: Behavior in Nb/Nb Mater. Sci. Eng. A. 26 80-90
  • [6] Jackson M. R.(2002)Al Laminates[J] Intermetallics 10 993-999
  • [7] Lipsitt H. A.(2002)Thermodynamic Modeling of the Nb-Si System[J] Trans. Nonferrous Met. Soc. China 12 691-694
  • [8] Kristic V. V.(1991)Microstructure of Nb/Nb Metallurgical Transactions A 22A 1573-1583
  • [9] Nicholson P. S.(2000)Si Mater. Sci. Eng. A287 183-188
  • [10] Bloyer D. R.(2003) in-situ Composites[J] Mater. Sci. Eng. A347 300-305
123