Mechano‐Synthesis of Lead–Magnesium–Niobate Ceramics
Mechano‐Synthesis of Lead–Magnesium–Niobate Ceramics
复制标题
铅镁铌酸盐陶瓷的机械合成
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
A. Meden
中科院分区：
文献类型：
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作者：
D. Kuščer;J. Holc;M. Kosec;A. Meden
采用X射线粉末衍射（XRD）和Rietveld精修法研究了高能球磨合成Pb（Mg 1/3 Nb 2/3）O3（PMN）的过程。结果进行了讨论的定性和定量组成的结晶和非晶相作为研磨时间的函数。PbO、Nb 2 O 5和MgO的机械合成导致钙钛矿PMN的形成。在研磨的初始阶段，观察到颗粒尺寸减小和高度的非晶化，同时形成钙钛矿和焦磷酸盐型结构。提出了机械合成路线形成PMN的机制。
The synthesis of Pb(Mg 1/3 Nb 2/3 )O 3 (PMN) with high-energy milling was studied by X-ray powder diffraction (XRD) using the Rietveld-refinement method. The results are discussed in terms of the qualitative and quantitative composition of the crystalline and amorphous phases as a function of milling time. The mechano-synthesis of PbO, Nb 2 O 5 , and MgO leads to the formation of perovskite PMN. In the initial stage of milling, particle size reduction and a high degree of amorphization were observed, together with the simultaneous formation of perovskite and pyrochlore-type structures. A mechanism for the formation of PMN by the mechano-synthesis route is proposed.