Resonance character of polymorphic transformations for the phase transition ?'L > ?'L > ?Ca2SiO4

Тип публикации: статья из журнала

Год издания: 2007

Идентификатор DOI: 10.3103/S1067821207060053

Ключевые слова: Dicalcium silicate, Molar ratio, Polymorphic transformation, Rapid cooling, X-ray powder, Silicates, Sintering, X ray powder diffraction, Calcium

Аннотация: Experimental results are presented showing that rapid cooling of dicalcium silicate is accompanied by delay of structural processes, which leads to a decreasing in temperature of the phase transition ?'L > Ca2SiO4. As starting materials, nepheline ore and limestone were used. In preparing the charge, the dosage of starting components was calculated for obtaining a molar ratio of CaO/SiO2 = 2.0. From the charge, the series of samples was prepared. Each of the samples was sintered to t = 1250°C with subsequent keeping of the material at this temperature for 30 min. Then the samples were subjected to rapid cooling in air to t = 750, 650, 550, 450, 350, 250, 150, and 25°C. By means of quantitative X-ray powder diffraction analysis using a DRON-3 setup, the content of ?'L and ?-Ca2SiO4 was determined in the samples. The data allow us to suppose the occurring polymorphic transformations in dicalcium silicate have a resonance character. © Allerton Press, Inc., 2007.

Ссылки на полный текст

Издание

Журнал: Russian Journal of Non-Ferrous Metals

Выпуск журнала: Vol. 48, Is. 6

Номера страниц: 404-406

ISSN журнала: 10678212

Авторы

  • Dashkevich R.Y. (Chair of Metallurgy of Light Metals and Alumina Production, Institute of Nonferrous Metals, FGOU VPO Siberian Federal University)
  • Aleksandrov A.V. (Chair of Metallurgy of Light Metals and Alumina Production, Institute of Nonferrous Metals, FGOU VPO Siberian Federal University)

Вхождение в базы данных

  • Scopus (цитирований 3)

Информация о публикациях загружается с сайта службы поддержки публикационной активности СФУ. Сообщите, если заметили неточности.

Вы можете отметить интересные фрагменты текста, которые будут доступны по уникальной ссылке в адресной строке браузера.