Experimental study of phase equilibria in the PbO-MgO-SiO2 system
Experimental study of phase equilibria in the PbO-MgO-SiO2 system
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DOI：
10.1007/s11663-001-0002-1
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发表时间：
2001-02-01
影响因子：
3
通讯作者：
Hayes, PC
中科院分区：
文献类型：
--
作者：
Chen, S;Zhao, B;Hayes, PC
本文采用高温平衡和淬火技术，结合电子探针X射线微区分析（EPMA），对PbO-MgO-SiO_2系进行了实验研究，测定了973 ~ 1673 K的相平衡。研究了该体系的9种主要相场，包括3种一氧化物（PbO，MgO，SiO2），5种二元化合物（MgSiO 3，Mg 2SiO 4，PbSiO 3，Pb 2SiO 4，Pb 4SiO 6）和1种三元化合物Pb 8 Mg（Si 2 O 7）（3）。另外两个三元化合物，PbMgSiO 4和PbMgSi 3 O 8，在一些实验中观察到：然而，进一步的实验表明，这两个化合物是不稳定的温度范围内调查。
An experimental study of the PbO-MgO-SiO2 system has been carried our using high-temperature equilibration and quenching techniques, followed by electron probe X-ray microanalysis (EPMA), The phase equilibria were determined in the temperature range from 973 to 1673K. Nine primary phase fields have been investigated in this system, including three monoxides (PbO, MgO, and SiO2), five binary compounds (MgSiO3, Mg2SiO4, PbSiO3, Pb2SiO4, and Pb4SiO6), and one ternary compound Pb8Mg(Si2O7)(3). Two other ternary compounds, PbMgSiO4 and PbMgSi3O8, were observed in some experiments: however, further experiments indicated that these two compounds are unstable in the temperature range investigated.