SHS of pyrochlore-type ceramic matrices for immobilization of actinide-containing nuclear wastes


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Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Mineral-like Y2(Ti1–xZrx)2O7 ceramic matrices for immobilization of actinide–Zr–RE-containing high-level nuclear wastes (HLW) were prepared by SHS method. In experiments, HLW were modeled by a mixture of CeO2, La2O3, ZrO2, MnO2, and Fe2O3 powders. An increase in the HLW content of green mixture decreased the amount of Y2(Ti1–xZrx)2O7 in combustion product and increased that of ZrO2, LaTiO3, and CaTiO3; decreased the fractional substitutionality of Zr for Ti; and increased the product porosity. An increase in combustion temperature and suppression of heat sink during SHS reaction did not diminish markedly the porosity of synthesized ceramics.

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Авторлар туралы

T. Barinova

Institute of Structural Macrokinetics and Materials Science (ISMAN)

Хат алмасуға жауапты Автор.
Email: tbarinova@ism.ac.ru
Ресей, Chernogolovka, Moscow, 142432

I. Borovinskaya

Institute of Structural Macrokinetics and Materials Science (ISMAN)

Email: tbarinova@ism.ac.ru
Ресей, Chernogolovka, Moscow, 142432

V. Barinov

Institute of Structural Macrokinetics and Materials Science (ISMAN)

Email: tbarinova@ism.ac.ru
Ресей, Chernogolovka, Moscow, 142432

I. Kovalev

Institute of Structural Macrokinetics and Materials Science (ISMAN)

Email: tbarinova@ism.ac.ru
Ресей, Chernogolovka, Moscow, 142432

A. Shchukin

Institute of Structural Macrokinetics and Materials Science (ISMAN)

Email: tbarinova@ism.ac.ru
Ресей, Chernogolovka, Moscow, 142432

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