PROCESS FOR MAKING HIGHLY REACTIVE SUB-MICRON AMORPHOUS TITANIUM DIBORIDE POWER AND PRODUCTS MADE THEREFROM

摘要

The invention relates to a manufacturing material comprising particulate amorphous titanium diboride submicron size, comprising the steps of forming a reaction mixture of powdered titanium oxide, boron oxide and magnesium, reacting exothermically in the atmosphere a reaction mixture comprising air to produce a reacted mass containing titanium diboride and magnesia, to washing the reacted mass with a solution of leaching having a pH in the range between about 0.5 and about 8, and recovering the leaching solution titanium diboride of sub-micron size having an area of ​​between about 25 and about 49 m2 / gm . The invention also relates to a manufacturing material resulting from the hot pressing of the particulate titanium diboride material of a size submicron having a hardness of between about 2800 to about 3400 Knoop, an elastic modulus between about 700 and about 813 GPa, a forming temperature between about 1500 ° C or less, and a morphological aspect ratio of grain between about 2: 1 to about 100: 1.