Preparation of pseudo-ternary library by combinatorial robot system based on wet and dry processes

摘要

A fully automatic combinatorial robot system was developed for investigating inorganic materials. The system can prepare and characterize about 200 samples in 1 day. The phase relation of the pseudo-ternary LiO0.5–X–TiO2 (X: CrO1.5, FeO1.5 and NiO) system was investigated in order to determine the formation range of ramsdellite structures. A wider composition range was obtained for the ramsdellite-type compounds in the LiO0.5–CrO1.5–TiO2 system than for other compounds. It was found that the differences in the composition ranges for ramsdellite-type structures were caused by the different ionic radii of Cr3+, Fe3+ and Ni2+ in the octahedral site.