Plasma-chemical synthesis of anorthite
Studies on the synthesis of anorthite CaO-Al2O3-2SiO2 in a thermal plasma medium have been carried out. It has been established that the optimal regime for the plasma-chemical synthesis of anorthite is: current strength 100 A, voltage 110 V, plasma gas flow rate 14 nl/min, and exposure time 25-30 sec. Using X-ray phase analysis, it was established that during the melting of the initial mixtures, the formation of a silicate melt followed by its cooling in the form of an anorthite phase took place. It is noted that for the synthesis of an anorthite phase enriched with calcium-containing CaO-Al2O3-2SiO2-nCaO compound, it is necessary to increase the content of calcium oxide CaO to 38%. Obtaining anorthite enriched with silicon-containing compounds CaO-Al2O3-2SiO2-nSiO2 can be achieved by increasing the content of silicon oxide to 67%. Crystals of the anorthite phase, according to microscopic studies, are ideomorphic needle-shaped crystals. Prospects for the use of plasma-chemically synthesized anorthite is the production of ceramics based on it.
Keywords
ceramics,
anorthite,
plasma synthesis,
X-ray phase analysis,
microstructureAuthors
| Skripnikova N.K. | Tomsk State University of Architecture and Building | nks2003@mail.ru |
| Volokitin O.G. | Tomsk State University of Architecture and Building | volokitin_oleg@mail.ru |
| Shekhovtsov V.V. | Tomsk State University of Architecture and Building | shehovcov2010@yandex.ru |
| Semenovykh M.A. | Tomsk State University of Architecture and Building | semenovykhmark@gmail.com |
Всего: 4
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