Preparation of PbGeO3 by the oxidation of Pb-Ge melts and its properties

被引：1

作者：

Denisova, L. T. ^{[1
]}

Kargin, Yu F. ^{[2
]}

Irtyugo, L. A. ^{[1
]}

Denisov, V. M. ^{[1
]}

机构：

[1] Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Pr Gazety Krasnoyarskii Rabochii 95, Krasnoyarsk 660025, Russia

[2] Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia

来源：

INORGANIC MATERIALS | 2016年 / 52卷 / 08期

关键词：

oxidation kinetics; high-temperature gravimetry; PHASE-RELATIONS; GLASSES; EQUILIBRIA;

D O I：

10.1134/S0020168516080045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents experimental data on the oxidation kinetics of a liquid 65 at % Pb + 35 at % Ge alloy in air. Lead metagermanate, PbGeO3, in a glassy state has been prepared by high-temperature oxidation of the melt at 1273 K. Interaction of molten PbGeO3 with crucible materials (SnO2, Au, Pd, and Pt) has been studied by the sessile drop method. Liquid lead germanate has been shown to be highly reactive with substrates from these materials. The heat capacity of the glassy lead metagermanate obtained has been determined by differential scanning calorimetry in the temperature range 300-800 K. In the range 330-630 K, the C (p) (T) data for glassy PbGeO3 can be represented using the Maier-Kelley equation. Above 630 K, there is a characteristic peak due to glass crystallization processes.

引用

页码：824 / 827

页数：4

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