共沉淀法制备Nd:YAG粉体及其表征

Preparation and Properties of Nd:YAG Powder by CO-Precipitation Method

以Y(NO3)3.6H2O、NH4Al(SO)4.12H2O、Nd(NO3)3.6H2O、NH4HCO3为原料,采用共沉淀法制备Nd:YAG粉体。采用红外光谱仪(FT-IR)对前驱体进行了成份分析,X射线衍射仪(XRD)检测了粉体物相组成。研究了混合溶液、沉淀剂溶液浓度及焙烧温度等因素对Nd:YAG粉体合成的影响。结果表明:混合盐溶液及沉淀剂溶液的浓度对合成纯相Nd:YAG粉体至关重要;以0.08 mol/L NH4Al(SO)4和0.048 mol/LY(NO3)3为混合溶液,0.5 mol/LNH4HCO3为沉淀剂制备的前驱体经900℃煅烧2h,可直接转变为纯相YAG粉体。

In this paper,Nd：YAG powder were synthesized via alcohol-water solvent co-precipitation method with Y（NO3）3·6H2O,NH4Al（SO4）2·12H2O,Nd（NO3）3·6H2O and NH4HCO3 as raw materials.The precursors were characterized by FT-IR.The phase of powder was measured by means of XRD.The effect factors on the fabrication of Nd：YAG powder were investigated.The results show that the concentration of mixed solution of aluminum nitrate and yttrium nitrate are critical for preparation of Nd：YAG powder,and that the precursors synthesized with 0.08 mol/L Al3＋ and 0.048 mol/L Y3＋ as mixed solution,0.5 mol/L NH4HCO3 as precipitant solution were transformed into pure phase YAG powder after calcined at 900℃ for 2h.