以粒度为3～1和≤1 mm的板状刚玉为骨料，板状刚玉细粉、α-Al2 O3微粉和Si粉为细粉，分别添加质量分数为3％的六方氮化硼、3％和10％的鳞片石墨制备了Al2 O3－BN和低碳、高碳Al2 O3－C三种试样，并对比了其常温物理性能、高温强度、抗氧化性、抗热震性和抗渣侵蚀性。结果表明：1）Al2 O3－BN耐火材料的常温、高温物理性能与低碳铝碳材料相差不大，并优于传统高碳铝碳材料；2）Al2 O3－BN 耐火材料具有比碳复合耐火材料更好的抗热震性和抗氧化性，抗渣性与低碳铝碳材料的相当；3）考虑到材料的整体性能，六方氮化硼可以替代石墨作为原料，用于制备综合性能优异的氧化铝质复合耐火材料。
The specimens of Al2O3-BN,low carbon Al2O3-C,and high carbon Al2O3-C were prepared using tabular alumina of 3 -1 and ≤1 mm as aggregate,tabular alumina powder,α-Al2O3 micropowder,and Si powder as matrix,adding 3%hexagonal boron nitride,3%flake graphite or 10%flake graphite in mass,re-spectively.The cold physical properties,hot strength,oxidation resistance,thermal shock resistance and slag corrosion resistance of the specimens were compared.The results show that:(1)cold and hot physi-cal properties of the Al2O3-BN refractories are slightly different compared with those of the low carbon Al2O3-C refractories,but better than those of the traditional high carbon Al2O3-C refractories;(2)Al2O3-BN refractories have better thermal shock resistance and oxidation resistance,and similar slag corrosion resist-ance compared with the Al2O3-C refractories;(3)hexagonal boron nitride can replace flake graphite as a starting material for the preparation of alumina based composite refractories.
参考文献
| [1] | I. D. Kashcheev;K. G. Zemlyanoi;E. A. Visloguzova .STUDY OF CARBON-CONTAINING REFRACTORIES FOR STEEL SMELTING PRODUCTION UNITS[J].Refractories and Industrial Ceramics,2007(5):313-316. |
| [2] | Emad Mohamed M.Ewais .Carbon Based Refractories[J].日本セラミックス协会学术论文志,2004(1310):517-532. |
| [3] | G. Z. Ruan;N. Li .Carbon pickup of interstitial free steel from Al_2O_3-C refractories[J].Ironmaking & Steelmaking: Products and applications,2004(4):342-344. |
| [4] | 刘波,刘永锋,刘开琪,孙加林.低碳MgO-C材料的抗热震性研究[J].耐火材料,2010(02):123-125. |
| [5] | 王学达,陈树江,孙加林,洪彦若,张红鹰,田琳.耐火材料对钢水杂质的影响[J].硅酸盐学报,2006(07):891-893. |
| [6] | Lipp A;Schwetz K A;Hunold K .Hexagonal boron nitride:fabrica-tion,properties and applications[J].Journal of the European Ceramic Society,1989,5(01):3-9. |
| [7] | Jens Eichler;Christoph Lesniak .Boron nitride (BN) and BN composites for high-temperature applications[J].Journal of the European Ceramic Society,2008(5):1105-1109. |
| [8] | LI Lin,HONG Yanruo,SUN Jialin,OUYANG Junhua,He Zhiyong,YU Li.The Effect of Graphite Particle Size on Properties of Low Carbon MgO-C Composite Materials[J].中国耐火材料(英文版),2004(03):20-24. |
| [9] | 李友胜,张唐文,鲍家兴,李楠,朱万政.加入Si粉对低碳铝镁碳材料性能的影响[J].耐火材料,2007(04):245-248. |
| [10] | 桂明玺 .转炉出钢口套管砖用低碳MgO-C砖的开发[J].国外耐火材料,1996,21(04):15-19. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%