High Temperature Chemical Reaction of La2O3 in H3BO3 -C System |
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| Authors: | Wu Xu Jingyu Peng Kewu Tu Ganfeng |
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| Affiliation: | School of Material and Metallurgy, Northeastern University, Shenyang 110004, China |
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| Abstract: | The high temperature chemical reaction process of La2 O3 in H3BO3-C system was studied by means of XRD and TG-DTA. The results showed that dehydration reaction of H3BO3 occurred in the temperature range of 82  390 °C; La2O3 and B2O3 reacted to form LaB3O6, LaBO3, and B4C in the temperature range of 836 1400°C; at 1450 °C, B4C and LaBO3 further reacted to form LaB4, and partial LaB4 and B reacted to form LaB6; at 1500 °C, LaB4 and B reacting into LaB6 was the main reaction, and the content of LaB6 increased with prolonging time. |
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| Keywords: | high temperature chemical reaction lanthanum boride boric acid-carbon lanthanum oxide rare earths |
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