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Growth behavior of TiB 2 hexagonal plates prepared via a molten‐salt‐mediated carbothermal reduction
Author(s) -
Song Shaolei,
Zhang Tong,
Xie Chen,
Zhou Jianmin,
Li Rong,
Zhen Qiang
Publication year - 2020
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16800
Subject(s) - hexagonal crystal system , carbothermic reaction , nucleation , molten salt , materials science , layer (electronics) , salt (chemistry) , chemical engineering , adsorption , crystallography , composite material , metallurgy , mineralogy , chemistry , carbide , organic chemistry , engineering
TiB 2 powders were successfully synthesized by a molten‐salt‐mediated carbothermal reduction method. The products obtained at 1300°C for 2 hours were hexagonal plates with side length of 3‐8 μm and thicknesses of 200‐500 nm. The microstructural evolution with temperature confirmed that the growth of TiB 2 hexagonal plates was a layer‐by‐layer growth controlled by a two‐dimensional nucleation. No‐uniform grains were observed attached on side and step edges of TiB 2 plates, which became finer and disappeared during the growth. This indicated that layer growth and growth on the side of TiB 2 plates followed the surface adsorption growth model.