Microstructure and Properties of TiC/Fe Matrix Composite Produced In-situ
-
摘要: 以铬铁粉、钼铁粉、钛粉、铁粉和炭黑为原料,原位反应合成了TiC/Fe基复合材料,并用扫描电镜、X射线衍射仪等方法对所制备的试样进行了组织结构分析.结果表明：未加钒时合成的复合材料主要相组成为TiC和α-Fe,硬质相TiC颗粒细小(≤2.3 μm);当加入一定量的钒后,复合材料主要相组成为(Ti,V)C和α-Fe,其组织更加致密,其抗弯强度升高;硬质相(Ti,V)C的面间距比硬质相TiC的面间距均有不同程度的减小;(Ti,V)C颗粒尺寸明显减小(≤1.6 μm),分布更均匀,颗粒形状趋于球形.
-
关键词:
- 原位合成 /
- TiC/Fe基复合材料 /
- 显微组织
Abstract: TiC/Fe matrix composite was in situ synthesized by sintering compacts of mixed ferrochromium,ferromolybdenum,iron,titanium and carbon black powders.The microstructure of the composite was investigated using X-ray diffraction and scanning electron microscopy.The results show that the synthesized composite consisted of fine TiC particles and α-Fe as the binder phases when no vanadium was added.With the addition of vanadium,the composite consiste of (Ti,V)C particles and α-Fe,and the densification and bending strength of (Ti,V)C/Fe composite are higher than those of the TiC/Fe composite.Compared with TiC,the face spaces of (Ti,V)C were lower than those of TiC,(Ti,V)C particles exhibited finer size and more homogeneous distribution in the matrix,and their shape is round.-
Keywords:
- in-situ synthesis /
- TiC/Fe matrix composite /
- microstructure
-
-
[1] 王宏明,李桂荣,赵玉涛,等.电磁铸造法制备的(Al2O3+Al3Zr)p/A359复合材料的磨损行为[J].稀有金属材料与工程,2006,35(4):669-672. [2] 冯可芹,杨 屹,王一三,等.铁基复合材料的制备技术与展望[J].机械工程材料,2002,26(12):9-11. [3] Terry B S,Chinyamakobvu O S.In situ production of Fe-TiC composites by reaction in liquid iron alloy[J].J Mater Lett,1991,10:628-629. [4] Patril P,Anders E W J,Steven S.Self-propagating high-temperature synthesis and liquid-phase sintering of TiC/Fe composites[J].Journal of Materials Processing Technology,2002,127:131-139. [5] Raghunath C,Bhat M S,Rohagl P K.In situ technique for synthesizing Fe-TiC composites[J].Scripta Metallurgica Materialia,1995(4):577-82. [6] Cutter R A,Rigtrup K M.Synthesis,sintering,microstructure and mechanical properties of ceramics made by exothermic reaction[J].J Am Ceram Soc,1992,75(1):36-43. [7] 宋桂香,刘均海,黄继华,等.成分参数对原位反应合成TiC/Cr18Ni8钢结硬质合金的影响[J].材料工程,2005,10(6):20-23. [8] Sepuiveda R,Arenas F.TiC-VC-Co:a study on its sintering and microstructure[J].Refractory Metals & Hard Materials,2001,21:389-396. [9] 孙景,魏庆丰,郭小南,等.碳化钒影响无磁硬质合金组织结构的机理研究[J].硬质合金,2004,21(1):5-9. [10] 孙景,魏庆丰,刘俊朋,等.添加VC的TiB2-Fe-Mo硬质合金[J].天津大学学报,2004,37(4):34-352. [11] 李荣久.陶瓷-金属复合材料(第二版)[M].北京:冶金工业出版社,1995. [12] 刘宁,刘灿楼,赵兴中,等.Mo、Ni含量与Ti(C,N)基金属陶瓷组织和性能之间的关系[J].硬质合金,1994,11(2):74-78.
计量
- 文章访问数: 2
- HTML全文浏览量: 0
- PDF下载量: 0
下载:
