Application of stereology on microstructure of neodymium-doped yttrium aluminum garnet (Nd : YAG) transparent ceramics

作者：Zhang Huashan; Han Hui; Su Chunhui^*; Zhang Hongbo; Hou Zhaoxia; Song Qiong

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2007, 445: 180-185.

DOI：10.1016/j.msea.2006.09.030

• neodymium-doped yttrium aluminum garnet
• transparent ceramics
• stereology

Stereology was applied to study quantitative relationship between stereological parameters in three-dimensional Euclidean space and light transmittance of Nd:YAG ceramics prepared by the vacuum sintering at 1700 degrees C for 5h. The ceramic materials were characterized by light transmittance, field emission gun-environment scanning microscope. The micrographs of ceramic surface were analyzed by the metallographic software to obtain the frequency distribution of grains. It was found that the transmittance of Nd:YAG I mm in thickness is about 45% and 58% in visible and near-infrared wavelength, respectively. The transmittance linearly increases with increasing equivalent sphere diameter and reaches theoretical value of single crystal when the equivalent sphere diameter is 20 mu m. The transmittance decreases with increasing of mean specific area per unit volume of grain and discrete grains and mean free distance.

• 出版日期2007-2-15
• 单位中国北方车辆研究所; 长春大学