以Y(NO3)3·6H2O、Al (NO3)3·9H2O、(NH4)2SO4和Nd(NO3)3为原料, NH4HCO3为沉淀剂, 以TEOS作为添加剂, 采用共沉淀法制备出Nd:YAG前驱体粉体; 前驱体经过1200℃煅烧5h后, 得到分散性好, 颗粒近似球型、纯YAG立方相的Nd:YAG纳米粉体, 其平均粒径约为100nm. 煅烧后的粉体压制成素坯, 在1700～1800℃煅烧10h, 可获得透光性良好的Nd:YAG激光透明陶瓷, YAG晶粒的平均尺寸为15μm, 晶界处和晶粒内没有杂质、气孔存在, 无散射中心. 1.5mm厚的样品在近红外波长为1064nm处透过率为83.5%, 基本接近于透明Nd:YAG晶体的理论值.
Neodymium-doped yttrium aluminum garnet (Nd:YAG) precursor powders were fabricated by co-precipitation method, using Al(NO3)3·9H2O, Y(NO3)3·6H2O, (NH4)2SO4 and Nd(NO3)3 as raw materials, NH4HCO3 as precipitator, TEOS as sintering additive. After calcining the Nd:YAG precursor at 1200℃ for 5h, the well dispersive, spherical pure cubic YAG nano-powders with average particle size of about 100nm were obtained. Subsequently, calcined powders were molded by cold isostatic presses. Transparent ceramics of excellent transmission were obtained by sintering Nd:YAG green body at 1700-1800℃ for 10h in vacuum. The ceramic crystal grains with average size of about 15μm appear uniformity. There is no impurity and core in grain interface and inner-grain. No scattering center can be detected. The transmission of the sample with thickness of 1.5mm is 83.5% at the near infrared wavelength of 1064nm, which is very close to the theoretical value of Nd:YAG single crystal.
参考文献
| [1] | 李\hspace*{.12cm江, 潘裕柏, 张俊计, 等. 硅酸盐学报, 2003, 31 (5): 490-493. [2] 刘景和, 朴贤卿, 卢利平, 等. 人工晶体学报, 2004, 33 (3): 407-410. [3] 闻 雷, 孙旭东, 马伟民, 等. 硅酸盐学报, 2003, 31 (9): 819-822. [4] 张旭东, 刘 宏, 王继扬, 等. 人工晶体学报, 2004, 33 (3): 292-295. [5] 黄朝红, 王爱华, 殷绍唐, 等. 硅酸盐学报, 2003, 31 (9): 873-877. [6] Ikesue A, Kinoshita T, Kamata K, et al. J. Am. Ceram. Soc., 1995, 78 (4): 1033-1040. [7] Lu J, Song J, Prabhu M, et al. Jpn. J. Appl. Phys., 2000, 39: L1048-L1050. [8] Gowda G. J. Mater. Sci. Lett., 1986, 5 (10): 1029-1032. [9] Messier D R, Gazza G E. Am. Ceram. Soc. Bull., 1986, 65 (9): 1282-1286. [10] Kang Y C, Chungy S, Park S B, et al. J. Am. Ceram. Soc., 1999, 82 (8): 2056-2060. [11] Kang Y C, Lenggoro I W, PARK S B, et al. Mater. Res. Bull., 2000, 35 (5): 789-798. [12] Li J, Pan Y B, Qiu F G, et al. Ceram. Int., 2007 33 (6): 1047-1052. [13] Li J, Pan Y B, Qiu F G, et al. Ceram. Int., 2008 34 (1): 141-149. [14] 刘文斌, 潘裕柏, 李 江, 等. 硅酸盐学报, 2008, 36 (3): 315-319. [15] Matsushita N, Tsuchiya N, Nakatsuka K, et al. J. Am. Ceram. Soc., 1999, 82 (8): 1977-1984. |
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