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Bimodal Microstructure and Reaction Mechanism of Ti 2 SnC Synthesized by a High‐Temperature Reaction Using Ti/Sn/C and Ti/Sn/TiC Powder Compacts
Author(s) -
Li ShiBo,
Bei GuoPing,
Zhai HongXiang,
Zhou Yang
Publication year - 2006
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/j.1551-2916.2006.01275.x
Subject(s) - microstructure , materials science , tin , sintering , carbide , titanium carbide , reaction mechanism , metallurgy , titanium , chemical engineering , chemistry , catalysis , biochemistry , engineering
High purity of titanium tin carbide (Ti 2 SnC) powder was fabricated by pressureless sintering two types of mixtures of Ti/Sn/C and Ti/Sn/TiC powders under different conditions. A bimodal microstructure of Ti 2 SnC with plate‐like and rod‐like forms was first observed, which is determined by the grain growth rate in different planes, the C particle's size, and the growth environment. Based on the microstructure observation, a reaction model was proposed to understand the reaction mechanism for the formation of Ti 2 SnC. Further investigation of the thermal stability of Ti 2 SnC demonstrates that Ti 2 SnC decomposes to TiC and Sn in vacuum atmosphere at 1250°C.