СaО-ZrO2-Nb2O5-SiO2体系溶胶-凝胶粉末相形成的特性

Chemistry and Chemical Technology Pub Date : 2023-09-20 DOI:10.23939/chcht17.03.495

Iryna Lutsyuk, Yaryna Gavryshkevych, Yaroslav Vakhula

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摘要

测定了1273 K热处理后不同Nb2O5含量CaO-ZrO2-Nb2O5-SiO2体系干凝胶粉末的物相组成。测定了粉末加热过程中发生的物理和化学过程的温度。结果表明:Nb2O5完全取代ZrO2，形成含铌相，粉体结构发生改变;

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Peculiarities of Phase Formation in Sol-Gel Powders of the СaО–ZrO2–Nb2O5–SiO2 System

The phase composition of xerogel powders of the CaO–ZrO2–Nb2O5–SiO2 system after heat treatment at 1273 K with different Nb2O5 content was established. The temperatures of the physical and chemical processes occurring during the powders heating were determined. It was found that the complete replacement of ZrO2 by Nb2O5 resulted in the formation of niobium-containing phases with a change in the structure of the powders.

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Chemistry and Chemical Technology

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