制取带中间层的Al<sub>2</sub>O<sub>3</sub>+ N i 复合材料的工艺研究

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制取带中间层的Al₂O₃+ N i 复合材料的工艺研究

1.
北京航空航天大学材料科学与工程系, 北京 100083;
2.
Fo rmer Foundation fo r A dvancedM etals Science, The N etherlands;
3.
University of Twente, Enschede, The N etherlands;
4.
北京中医药学院分析化学教研室, 北京 100013;
5.
Currently: PIM 2Tech b. v.| P. O. Box 192, 7360 AD Beekbergen, The Netherlands

1.
Beijing University of Aeronautics and Astronautics, Dept. of Materials Science and Engineering, Beijing 100083;
2.
Former Foundation for Advanced Metals Science, The N etherlands;
3.
U niversity of Twente, Enschede, The Netherlands;
4.
College of T raditional Chinese Medicine and Pharmaco logy, Division of Analytical Chemistry, Beijing 100013;
5.
Currently: PIM -Tech b. v.| P. O. Box192, 7360 AD Beekbergen, The Netherlands

摘要: 为了制取Al₂O₃+ Ni 复合材料, 首先用化学汽相沉积(CVD) 法在Al₂O₃颗粒表面镀TiN。用SEM (扫描电镜) 和EDX (能谱) 分析镀层的均匀性。用X 射线荧光光谱法分析粉末的Ti 含量。然后用热压法制取这种金属陶瓷复合材料。由于TiN 中间层的存在, 复合材料的致密化和力学性能获得明显改善
- 陶瓷基复合材料, 金属陶瓷复合材料, 硬质合金
Abstract: In order to manufacture Al₂O₃+Ni composite, Al₂O₃ particles were first coated with TiN by CVD. The homogeneity of the coating layer was characterized by SEM and EDX. The Ti content of the coated powder was analyzed by X ray fluorescence spectrometry. The composite was produced by hot pressing. The densification and mechanical properties of the composite are improved remarkably by applying TiN interlayer. The higher the hot pressing temperature, the more pronounced the favourable effect will be. One reason for these experimental results is that the wettability between TiN and Ni is better than that between Al₂O₃ and Ni.
- ceramic matrix composite