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

Описание

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1134/S0020168516080045

Ключевые слова: oxidation kinetics, high-temperature gravimetry, high-temperature gravimetry, oxidation kinetics, Differential scanning calorimetry, Germanium, Glass, Lead, Molten materials, Specific heat, Thermooxidation, Characteristic peaks, Crucible materials, Glass crystallization, Glassy state, High temperature, Oxidation kinetics, Sessile drop method, Temperature range, Oxidation

Аннотация: 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 seПоказать полностьюssile 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.

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Издание

Журнал: INORGANIC MATERIALS

Выпуск журнала: Vol. 52, Is. 8

Номера страниц: 824-827

ISSN журнала: 00201685

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Denisova L.T. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Pr Gazety Krasnoyarskii Rabochii 95, Krasnoyarsk 660025, Russia)
  • Kargin Yu F. (Russian Acad Sci, Baikov Inst Met & Mat Sci, Leninskii Pr 49, Moscow 119991, Russia)
  • Irtyugo L.A. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Pr Gazety Krasnoyarskii Rabochii 95, Krasnoyarsk 660025, Russia)
  • Denisov V.M. (Siberian Fed Univ, Inst Nonferrous Met & Mat Sci, Pr Gazety Krasnoyarskii Rabochii 95, Krasnoyarsk 660025, Russia)

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