Self-propagating High Temperature Synthesis of TiB_2

摘要

Self-propagating high temperature synthesis (SHS) is a very important technique for the synthesis of high technology ceramics, metals and alloys. SHS parameters of TiB_2 were carried out in this study. Mg stoichiom-etry as reductant, process atmosphere and addition of NaCl and MgSO_4·7H_2O additives were investigated. HCl leaching was applied to SHS products to purify their TiB_2 contents. Stoichiometrically 100% Mg addition ratio and Ar atmosphere were determined as the optimum parameters. NaCl addition was also positively affected the specific surface area values. 11.78 m~2/g specific surface area value was measured for 5.0% NaCl addition ratio.