Features of In Situ Structure Formation in Powder Materials Based on Titanium and Refractory Compound during Vacuum Sintering

摘要

The volume changes and structure of the sintered powder compacts Ti + Ti_nA_m were studied, where A is one of the elements forming a refractory compound with titanium (Si, C or B). The comparative results of porosity changes in sintered composites of Ti + TinA_m powder compositions obtained by different technological methods were presented. It is shown that various methods of combining the components have a significant effect on the macrostructure formation of the metal matrix composite including grain size and porosity while maintaining the basic phase composition. The use of synthesized powders leads to reduce in a porosity of the sintered composites.