采用低温燃烧法合成出掺钕钇铝石榴石(Nd:YAG)粉末, 经模压300MPa成型, 于1700℃真空烧结5h, 制备出尺寸φ9mm×1mmNd:YAG透明陶瓷片. 对Nd:YAG透明陶瓷片进行光透过率、场发射－环境扫描电镜测量. 采用体视学原理与方法定量地研究了Nd:YAG透明陶瓷的微观结构参数和光透过率之间的关系. 研究结果表明: 尺寸φ9mm×1mmNd:YAG透明陶瓷片在可见光波段光透过率约为45%, 在近红外光波段约为55%; 随着入射光波长的增加, 光透过率增加; 随着晶粒三维球当径(D3S)的增加, 光透过率增加, 当D3S约为20μm时, Nd:YAG透明陶瓷光透过率接近单晶理论值; 随着晶粒以及单个晶粒平均比表面积的增加, 光透过率降低; 随着晶粒三维平均自由距离的增加, 光透过率降低.
The neodymium doped yttrium aluminum garnet (Nd:YAG) powders were synthesized by the low temperature combustion and the transparent ceramic disks with 9mm in diameter and 1mm in thickness were prepared by the vacuum sintering at 1700℃ for 5h after being 300MPa model pressing. The transparent ceramics were characterized by optical transmittance, field emission gun-environment scanning microscope and the study were carried out on the qualitative relationship between the optical transmittance and
microstructure parameters using stereology theory and method. The results show that the optical transmittance of Nd:YAG transparent ceramics with 9mm in diameter and 1mm in thickness is about 45% in visible region and 55% in infrared region and increase with the incidence light wavelength increasing. The optical transmittance increases with three dimensionally corresponding diameter (D3S ) of grain climbing and reaches the theoretical value of single crystals when D3S is 20μm. The optical transmittance decreases with the grain and single grain mean specific area enhancing and mean free distance of grains adding.
参考文献
| [1] | Jianren L U, Junhua LU. Advanced Solid-State Lasers, 2002, 68(1): 507--517． [2] 黄朝红, 王爱华, 殷绍唐, 等．硅酸盐学报, 2003, 31(9): 873--877． [3] 闻雷, 孙旭东, 马伟民, 等(WEN Lei, et al). 无机材料学报(Journal of Inorganic Materials), 2004, 19(2): 295--301． [4] Ikesue Akio, Furusato Iso, Kamata Kiichiro. Journal of the American Ceramic Society, 1995, 78(1): 225--228． [5] Hay R S. Journal of the Materials Research, 1993, 8(3): 578--604． [6] Nyman May, Caruso James, Hampden Mark J. Journal of the American Ceramic Society, 1997, 80(5): 1231--1 238． [7] Sordelet D J, Akinc M, Panchula M L, et al. Journal of the European Ceramic Society, 1994, 14(1): 123--130． [8] 李江, 潘裕柏, 张俊计, 等．硅酸盐学报, 2004, 31(5): 490--493． [9] Pechini M P. Method of preparing lead and alkaline earth titanate and niobates and coating method using the same to form a capacitor. US, 330697, 1967. 7． [10] ZHANG Huashan, SU Chunhui, HAN Hui, et al. Rare. Metals., 2005, 24(2): 166--1690． [11] ZHANG Huashan, SU Chunhui, HAN Hui, et al. Journal of Rare. Earths, 2005, 23(3): 304--308． [12] Vaqueiro Paz, L$acute o$pez-Quintela M Arturo. Journal of Materials Chemistry, 1998, 8(1): 161--163． [13] 刘国权, 刘新胜, 黄启今. 中国体视学与图像分析, 2002, 7(4): 248--251． [14] Russ John C, Dehoff Robert T. PRACTICAL STEREOLOGY, Second edition. New York: Kluwer Academic/Plenum Publisher. 1--16． [15] Sekita M, Haneda H, Yanagitani Y, et al. Journal of Applied Physics, 1990, 67(1): 453--458． [16] 罗谷风. 结晶学导论. 北京: 地质出版社, 1985. 172--180． |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%