英语翻译AbstractNanosized and highly reactive magnesium niobate
英语翻译
Abstract
Nanosized and highly reactive magnesium niobate (MgNb2O6) powders were successfully synthesized by a new wet-chemical method by means of the dissolution of Nb2O5 2 5H2O and in a solution of oxalic acid followed by the addition of stoichiometric amounts of magnesium carbonate.The Nb–Mg–oxalic acid solution was evaporated resulting in a dry and amorphous powder that was calcined in the temperature range from 200 to 900 8C for 2 h.The crystallization process from the amorphous state to the crystallineMgNb2O6 was followed by thermal analysis.The calcined powders characterized by FT-Raman spectroscopy,X-ray diffraction (XRD) and their morphology examined by high resolution scanning electron microscopy (HR-SEM).Pure MgNb2O6,free from the second phases and obtained at 800 8C was confirmed by a combinedanalysis using XRD and FT-Raman.The average diameter of the particles was calculated from the HR-SEM image as 70 nm approximately.This technique allows a better mixing of the constituent elements and thus a better reactivity of the mixture to obtain pre-reaction products withhigh purity at lower temperatures and reducing cost.It can offer a great advantage in the PMN-PT formation with respect to the solid-statesynthesis.
# 2006 Elsevier Ltd and Techna Group S.r.l.All rights reserved.
Keywords:MgNb2O6; Columbite; Magnesium niobate; Low temperature synthesis; FT-Raman
Abstract
Nanosized and highly reactive magnesium niobate (MgNb2O6) powders were successfully synthesized by a new wet-chemical method by means of the dissolution of Nb2O5 2 5H2O and in a solution of oxalic acid followed by the addition of stoichiometric amounts of magnesium carbonate.The Nb–Mg–oxalic acid solution was evaporated resulting in a dry and amorphous powder that was calcined in the temperature range from 200 to 900 8C for 2 h.The crystallization process from the amorphous state to the crystallineMgNb2O6 was followed by thermal analysis.The calcined powders characterized by FT-Raman spectroscopy,X-ray diffraction (XRD) and their morphology examined by high resolution scanning electron microscopy (HR-SEM).Pure MgNb2O6,free from the second phases and obtained at 800 8C was confirmed by a combinedanalysis using XRD and FT-Raman.The average diameter of the particles was calculated from the HR-SEM image as 70 nm approximately.This technique allows a better mixing of the constituent elements and thus a better reactivity of the mixture to obtain pre-reaction products withhigh purity at lower temperatures and reducing cost.It can offer a great advantage in the PMN-PT formation with respect to the solid-statesynthesis.
# 2006 Elsevier Ltd and Techna Group S.r.l.All rights reserved.
Keywords:MgNb2O6; Columbite; Magnesium niobate; Low temperature synthesis; FT-Raman
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Abstract
文摘
Nanosized and highly reactive magnesium niobate (MgNb2O6) powders were successfully synthesized by a new wet-chemical method by means of the dissolution of Nb2O5 5H2O and in a solution of oxalic acid followed by the addition of stoichiometric amounts of magnesium carbonate.
纳米和高活性镁铌盐酸(MgNb2O6)成功地合成粉体新wet-chemical手段铟解散,5H2O草酸的溶液中,紧随其后的是增加计量大量的镁碳酸酯.
The Nb–Mg–oxalic acid solution was evaporated resulting in a dry and amorphous powder that was calcined in the temperature range from 200 to 900 8C for 2 h.
Nb-Mg-oxalic的乙酸溶液风干导致干燥和无定形的粉末煅烧温度是范围从200到900暖2小时.
The crystallization process from the amorphous state to the crystallineMgNb2O6 was followed by thermal analysis.
结晶过程的晶态紧随其后的分别是crystallineMgNb2O6进行热分析.
The calcined powders characterized by FT-Raman spectroscopy,X-ray diffraction (XRD) and their morphology examined by high resolution scanning electron microscopy (HR-SEM).
煅烧粉具有FT-Raman光谱、x射线衍射仪(XRD)及其形态对高分辨率的扫描电镜(HR-SEM).
Pure MgNb2O6,free from the second phases and obtained at 800 8C was confirmed by a combinedanalysis using XRD and FT-Raman.
纯MgNb2O6,脱离第二阶段,取得了在800暖combinedanalysis已经证实了用x射线衍射、FT-Raman.
The average diameter of the particles was calculated from the HR-SEM image as 70 nm approximately.
平均直径计算出的颗粒HR-SEM大约70海里的形像.
This technique allows a better mixing of the constituent elements and thus a better reactivity of the mixture to obtain pre-reaction products withhigh purity at lower temperatures and reducing cost.
这种技术需要一个较好的混合构成要素,从而更好的反应活性这种混合物用来获得pre-reaction产品withhigh纯度维持在较低的温度,降低成本.
It can offer a great advantage in the PMN-PT formation with respect to the solid-statesynthesis.
它能提供一个巨大的优势在PMN-PT就solid-statesynthesis形成.
# 2006 Elsevier Ltd and Techna Group S.r.l.
出版社有限公司,Techna 2006年号S.r.l组.
All rights reserved.
版权所有.
Keywords:MgNb2O6; Columbite; Magnesium niobate; Low temperature synthesis; FT-Raman
关键词:MgNb2O6;Columbite、镁铌盐酸;低温合成,FT-Raman
文摘
Nanosized and highly reactive magnesium niobate (MgNb2O6) powders were successfully synthesized by a new wet-chemical method by means of the dissolution of Nb2O5 5H2O and in a solution of oxalic acid followed by the addition of stoichiometric amounts of magnesium carbonate.
纳米和高活性镁铌盐酸(MgNb2O6)成功地合成粉体新wet-chemical手段铟解散,5H2O草酸的溶液中,紧随其后的是增加计量大量的镁碳酸酯.
The Nb–Mg–oxalic acid solution was evaporated resulting in a dry and amorphous powder that was calcined in the temperature range from 200 to 900 8C for 2 h.
Nb-Mg-oxalic的乙酸溶液风干导致干燥和无定形的粉末煅烧温度是范围从200到900暖2小时.
The crystallization process from the amorphous state to the crystallineMgNb2O6 was followed by thermal analysis.
结晶过程的晶态紧随其后的分别是crystallineMgNb2O6进行热分析.
The calcined powders characterized by FT-Raman spectroscopy,X-ray diffraction (XRD) and their morphology examined by high resolution scanning electron microscopy (HR-SEM).
煅烧粉具有FT-Raman光谱、x射线衍射仪(XRD)及其形态对高分辨率的扫描电镜(HR-SEM).
Pure MgNb2O6,free from the second phases and obtained at 800 8C was confirmed by a combinedanalysis using XRD and FT-Raman.
纯MgNb2O6,脱离第二阶段,取得了在800暖combinedanalysis已经证实了用x射线衍射、FT-Raman.
The average diameter of the particles was calculated from the HR-SEM image as 70 nm approximately.
平均直径计算出的颗粒HR-SEM大约70海里的形像.
This technique allows a better mixing of the constituent elements and thus a better reactivity of the mixture to obtain pre-reaction products withhigh purity at lower temperatures and reducing cost.
这种技术需要一个较好的混合构成要素,从而更好的反应活性这种混合物用来获得pre-reaction产品withhigh纯度维持在较低的温度,降低成本.
It can offer a great advantage in the PMN-PT formation with respect to the solid-statesynthesis.
它能提供一个巨大的优势在PMN-PT就solid-statesynthesis形成.
# 2006 Elsevier Ltd and Techna Group S.r.l.
出版社有限公司,Techna 2006年号S.r.l组.
All rights reserved.
版权所有.
Keywords:MgNb2O6; Columbite; Magnesium niobate; Low temperature synthesis; FT-Raman
关键词:MgNb2O6;Columbite、镁铌盐酸;低温合成,FT-Raman
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