以铝、B2O3为原料,利用自蔓延高温合成(SHS)制备了Al2O3/AlB12复相陶瓷粉体,研究了燃烧条件对粉体特性的影响.结果发现,经球磨处理后, 复相陶瓷粉体中Al2O3的平均粒径为34μm,AlB12的粒度为亚微米级.粉体的比表面积为1m2/g.燃烧过程中B2O3易于挥发,并在合成产物的表层生成B2O3和9Al2O3.2B2O3副产物相.在较低压力的氩气中进行合成,可以减少副产物相,获得纯度较高的复相陶瓷.与实际测量的燃烧温度对比发现,按照化学反应式13Al+6B2O3=6Al2O3+AlB12, 通过热力学计算得到的绝热燃烧温度明显偏高.
参考文献
| [1] | 龚毅生等著. 无机化学丛书, 第二卷. 北京: 科学技术出版社, 1990. 363-374. |
| [2] | Meschel S V, Kleppa O J. Journal of Alloys and Compounds, 1995, 227: 93-96. |
| [3] | Chuzhako R K, et al. Inorg. Mater., 1995, 31 (8): 961-964. |
| [4] | Kharlamov A I, Duda T I, Fomenko V V. In: Emin D, Aselage T L, ed. AIP Conference Proceedings 231, Boron rich Solids. Albuquerque, NM 1990. 94-104, 473-481, 512-515, 590-593. |
| [5] | Gosset D, Guery M, Kryger B. In: Emin D, Aselage T L, ed. AIP Conference Proceedings 231, Boron rich Solids. Albuquerque, NM 1990. 380-383. |
| [6] | Wilkins M L. In: Matkovich V I, ed. Boron and Refractory Borides. Springer-Verlag Press, 1977, 633-648. |
| [7] | 刘永合. Al2O3/B4C和Al2O3/AlB12复相陶瓷的燃烧合成及致密化. 北京科技大学博士学位论文. 北京, 1999. |
| [8] | Liu Yonghe, Yin Sheng, Zhang Weijing, et al. Scripta Materialia, 1998, 39 (9): 1237-1242. |
| [9] | Liu Yonghe, Yin Sheng, Zhang Weijing, et al. Proc. 28th International CALPHAD Congress. Beijing , May 1998. 142 |
| [10] | Liu Yonghe,Yin Sheng, Lai Heyi. J. Mat. Res., 1998, 13 (7), 547-550. |
| [11] | Yin Sheng, Liu Yonghe, Lai Heyi. In: Imam M A, DeNale R, Hanada S, ed. Proceedings of PRICM 3. Hawaii, 1998, 453-458. |
| [12] | Mezhanov A G. In: Munir Z A, Holt J B, ed. Combustion and Plasma Synthesis of High-temperature materials. VCH, New York, 1990. 204 |
| [13] | Wang L,Munir Z A,Maximov Y M. J. Mater. Sci., 1993, 28: 3693-3708. |
| [14] | Munir Z A, Umberto Anselmi-Tamburini. Materials Science Reports, 1989, 3: 277-365. |
| [15] | Wang L,Munir Z A, Holt J B. J. Mater. Synth. Process, 1994, 2 (4): 471-9. |
| [16] | 张海波. Al2O3基多元复相陶瓷的燃烧合成及致密化. 北京科技大学硕士学位论文. 北京,1996. |
| [17] | David, R Lide. CRC Handbook of Chemistry and Physics, 71st Edition, 1990-91. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%