摘要
为了得到一种新型、廉价的钛基复合材料,通过钛与B2O3,稀土Nd之间的化学反应,经非自耗电弧熔炼工艺原位合成了TiB和Nd2O3增强的钛基复合材料.利用X射线衍射、光学金相、电子探针和透射电镜分析了合成复合材料的物相、增强体的形态和显微组织.结果表明,复合材料的增强体为TiB和Nd2O3;生成的TiB晶须分布均匀;Nd2O3的形貌随添加Nd的含量的改变,从针状转变为球状和树枝状晶.增强体TiB、Nd2O3和钛基体界面干净,没有明显的反应生成物存在.
TiB and Nd2O3 reinforced titanium matrix composites were synthesized with raw materials of Ti, Nd and B2O3 by non-consumable arc-melting technique. X-ray diffraction (XRD) was used to identify the phases of the composites. The microstructures of the composites were examined by means of optical microscopy (OM), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that the composites consist of titanium, TiB and Nd2O3. The reinforcements are distributed uniformly in the matrix. As the mount of Nd increases, the shape of Nd2O3 changes from needle-shape to sphere-shape and dendritic-shape. The interfaces between reinforcements of TiB, Nd2O3 and Ti matrix are clear without any interfacial reaction.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第2期300-303,共4页
Journal of Shanghai Jiaotong University
关键词
原位自生
钛基复合材料
显微组织
硼化钛
三氧化二钕
Boron compounds
In situ processing
Metallographic microstructure
Neodymium
Optical microscopy
Raw materials
Reinforcement
Scanning electron microscopy
Titanium
Transmission electron microscopy
X ray diffraction analysis
