Solid-state-reactive fabrication of Cr,Nd:YAG transparent ceramics : the influence of raw material

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概要

• 論文の詳細を見る

• Solid-state reactive sintering a stoichiometric mixture of commercial γ-Al_2O_3, Y_2O_3, Nd_2O_3 and Cr_2O_3 powders was conducted at 1800℃ with tetraethoxysilane (TEOS) as sintering aid and CaO as charge compensator. The cubic garnet structure of YAG (Y_3Al_5O_<12>) as well as orthorhombic structure of YAP (YAlO_3) formed in the sample due to mass loss of γ-Al_2O_3 during sintering. The sample obtained was fully dense but not transparent and the width of grain boundary phase was about 300 nm contained a significant amount of Si and Nd, compared with the inner grains. The doping concentration of Nd and Si in YAlO_3 phase is much larger than that in Y_3Al_5O_<12> phase. However, when a little more γ-Al_2O_3 than stoichiometric composite was added, transparent Cr,Nd:YAG ceramic could be obtained. The optical transmittance of the sample sintered at 1800℃ for 1Oh is 68.5% at 1064nm and the average grain size is about 10 μm.

• 社団法人日本セラミックス協会の論文
• 2008-04-01

著者

• Zhu Yong

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Li Jiang

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Wu Yusong

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Pan Yubai

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Guo Jingkun

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

• Liu Wenbin

  Shanghai Institute Of Ceramics Chinese Academy Of Sciences

関連論文

• A Simple Route to Coat Multiwalled Carbon Nanotubes with Silica
• Solid-state-reactive fabrication of Cr,Nd:YAG transparent ceramics : the influence of raw material

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