以镁砂、炭黑和刚玉为原料,在氩气和氮气气氛保护下,分别在1500℃、1600℃和1650℃合成纤维状镁铝尖晶石.用X射线衍射(XRD)分析合成产物的物相组成,用扫描电子显微镜(SEM)观察合成纤维的形貌,用扫描电镜配置的能谱仪(EDS)检测合成物微区化学成分.结果表明:1500℃适宜镁铝尖晶石纤维的生长,合成温度升高则生成尖晶石颗粒.1500℃氮气中合成的纤维直径大于氩气中合成纤维,氮气中合成镁铝尖晶石纤维的直径约为80～90 nm,氩气中合成纤维的直径约为50～60 nm,纤维横截面均为六边形.
参考文献
| [1] | Baudin C.;Pena P.;Martinez R. .HIGH-TEMPERATURE MECHANICAL BEHAVIOR OF STOICHIOMETRIC MAGNESIUM SPINEL[J].Journal of the American Ceramic Society,1995(7):1857-1862. |
| [2] | Lee PY;Suematsu H;Yano T;Yatsui K .Synthesis and characterization of nanocrystalline MgAl2O4 spinel by polymerized complex method[J].Journal of nanoparticle research: An interdisciplinary forum for nanoscale science and technology,2006(6):911-917. |
| [3] | 黄存兵.自增韧和增强的镁铝尖晶石透明陶瓷[J].人工晶体学报,2008(04):800-804. |
| [4] | 何捷,林理彬,卢勇,邹萍.γ辐射及退火MgAl2O4透明陶瓷光谱特性研究[J].人工晶体学报,2002(01):63-66. |
| [5] | 姜茂发,孙丽枫,于景坤.镁铝尖晶石质耐火材料的开发与应用[J].工业加热,2005(02):56-59. |
| [6] | Q.Y. Chen;C.M. Meng;T.C Lu .Enhancement of sintering ability of magnesium aluminate spinel (MgAl2O4) ceramic nanopowders by shock compression[J].Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems,2010(1/2):91-95. |
| [7] | 李建平,谢玉玲.镁铝尖晶石的合成及其工业应用[J].非金属矿,1996(04):24-27. |
| [8] | Kawakami S.;Sakakibara S.;Tabata H.;Yamada T. .PREPARATION OF SPINEL FIBERS BY DIRECTIONAL SOLIDIFICATION OF MGAL2O4-MG2SIO4 EUTECTIC[J].Journal of Crystal Growth,1995(1/2):193-196. |
| [9] | Daoyuan Yang;Fenling Qian;Kai Zhu;Zhanling Lu;Rui Zhang .Preparation and Growth Mechanism of Hexagonal MgAl_2O_4 Spinel Fibers[J].Key engineering materials,2008(p.1):409-411. |
| [10] | Hashimoto S.;Yamaguchi A. .SYNTHESIS OF MGAL2O4 WHISKERS BY AN OXIDATION-REDUCTION REACTION[J].Journal of the American Ceramic Society,1996(2):491-494. |
| [11] | 杨道媛,贾晓林,郭新荣,张海军,孙加林,钟香崇.六方柱状MgAl2O4纤维的合成机理初探[J].材料导报,2004(z1):311-313. |
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%