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Wetting Reaction between Lithium Fluoride and Barium Titanate

1989; Wiley; Volume: 72; Issue: 9 Linguagem: Inglês

10.1111/j.1151-2916.1989.tb06307.x

1551-2916

Jiu‐Nun Lin, Tai‐Bor Wu,

Extraction and Separation Processes

The wetting reaction between LiF and BaTiO 3 was studied by examining the reaction products on the LiF‐wetted surface of BaTiO 3 . A reduction reaction occurred between the melt of LiF and BaTiO 3 , causing the formation of LiTiO 2 and volatilization of fluorine. The wetted surface consisted of spherical particles of LiTiO 2 and eutectically decomposed phases of BaLiF 3 and LiTiO 2 . The formation of LiTiO 2 was repressed by the addition of excess BaO in the melt of LiF, and a well‐spread film was formed on the surface of BaTiO 3 . The wetting between BaLiF 3 and BaTiO 3 was also examined. The reaction of forming LiTiO 2 did not occur, and a mosaic film was formed on the surface of BaTiO 3 .