METHOD FOR MANUFACTURING B4C, TITANIUM-ALUMINA COMPLEX BY SELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS

摘要

In the present invention, a preform prepared under a constant pressure by mixing B ₂ O ₃ powder, Mg powder, and carbon black is placed in a self-burning reactor, and chemically modified TiO ₂ / Al / C is first used from the outside. After the ignition, the method for producing a B ₄ C powder characterized in that the autogenous combustion reaction of B ₂ O ₃ / Mg / C by the exotherm.;In addition, in the present invention, TiO ₂ / Al / C used as a chemical furnace is mixed in a molar ratio of 2-3: 3-5: 2-4, placed outside the pellet of B ₂ O ₃ / Mg / C and reacted to B ₄ The present invention relates to a method for producing a titanium-alumina composite, characterized in that C powder is prepared and the pellet is pulverized by the reaction terminated chemistry to produce TiC / Al ₂ O ₃ , which can be used as a preform of the composite material.