Investigation of Phase Equilibria in the System Nd_2O_3-Na_2O-P_2O_5.Quasibinary Section NdPO_4-Na_3PO_4

T.Znamierowska; Sz.Bandrowski

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Investigation of Phase Equilibria in the System Nd_2O_3-Na_2O-P_2O_5.Quasibinary Section NdPO_4-Na_3PO_4

机译：Nd_2O_3-Na_2O-P_2O_5系统的相平衡研究。准二进制截面NdPO_4-Na_3PO_4

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Quasibinary section NdPO_4-Na_3PO_4 has been investigated by thermoanalytical methods (DTA,TG,DTG),X-ray powder diffraction and microscopy.Its phase diagram is proposed.It is found,that the parent orthophosphates react in the molar ratio 1:1 yielding an intermediate compound of Na_3Nd(PO_4)_2.This phosphate melts incongruently at 1485 deg C,giving NdPO_4 and an Na_3PO_4-rich liquid.Na_3Nd(PO_4)_2 compound is stable down to room temperature and exhibits a polymorphic transition at about 1040 deg C.

机译：通过热分析方法（DTA，TG，DTG），X射线粉末衍射和显微镜研究了准二元截面NdPO_4-Na_3PO_4。提出了其相图，发现母体正磷酸盐以1：1的摩尔比反应生成Na_3Nd（PO_4）_2的中间体化合物。该磷酸盐在1485摄氏度下熔融不均匀，产生NdPO_4和富含Na_3PO_4-的液体.Na_3Nd（PO_4）_2化合物在室温下稳定并在约1040摄氏度下表现出多晶型转变。

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《Polish Journal of Chemistry》 |2006年第10期|共5页
作者
T.Znamierowska; Sz.Bandrowski;
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正文语种 eng
中图分类化学;
关键词
phase diagram; DTA; TG; DTG; X-ray powder diffraction; neodymium-sodium orthophosphate;

机译：相图;DTA;TG;DTG;X射线粉末衍射;钕磷酸钠;

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Investigation of Phase Equilibria in the System Nd_2O_3-Na_2O-P_2O_5.Quasibinary Section NdPO_4-Na_3PO_4

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