Studies on the binary system Li2CO3-BaCO3

The binary system Li2CO3-BaCO3 was studied by means of heating-cooling curves, differential thermal analysis (DTA), thermogravimetry (TG), X-ray phase analysis and infrared spectroscopy. There is an eutectic at 609 (+/-4) degreesC and about 55 mol% Li2CO3. It was shown that lithium carbonate does not form substitutional solid solutions with barium carbonate, however, the possible formation of dilute interstitial solid solutions is suggested. (C) 2001 Elsevier Science B.V. All rights reserved.