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Reaction Synthesis of Titanium Silicides via Self‐Propagating Reaction Kinetics
Author(s) -
Yen Bing K.,
Aizawa Tatsuhiko,
Kihara Junji
Publication year - 1998
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.1151-2916.1998.tb02574.x
Subject(s) - exothermic reaction , materials science , powder mixture , titanium , combustion , self propagating high temperature synthesis , ignition system , thermal shock , chemical engineering , titanium powder , kinetics , phase (matter) , silicon , thermal , porosity , induction period , composite material , metallurgy , microstructure , chemistry , sintering , thermodynamics , organic chemistry , physics , quantum mechanics , engineering
Self‐propagating exothermic reactions in the titanium‐silicon system induced by mechanical milling, shock loading, and thermal ignition of elemental powder mixtures have been investigated. After an induction period of 3 h, the 5Ti + 3Si powder mixture abruptly reacted during milling to form single‐phase Ti 5 Si 3 via a mechanically induced self‐propagating reaction (MSR). Moreover, the formation of porous Ti 5 Si 3 solid indicated that the melting of powder particles had occurred during the mechanical alloying process. The Ti + Si powder mixture also reacted via the MSR mode, but the end‐product was multiphase. Shock and combustion synthesis (thermal‐explosion mode) experiments essentially produced the same result.