LAUSR

Abstract Textured TiB2-(Ti,Zr)B2 composites were prepared by gel-casting in 6 T and subsequent pressureless sintering without the magnetic field. These results showed that c-axis of TiB2 and ZrB2 grains were oriented to parallel to the direction of the magnetic field in textured green bodies. Separately, the higher c-axis orientation was obtained for TiB2 and the lower c-axis orientation was obtained for ZrB2. After sintering, ZrB2 phases disappeared and new (Ti,Zr)B2 solid solutions appeared by the reaction of ZrB2 and TiB2. The degree of texture of TiB2 increased compared with that in green body. (Ti,Zr)B2 solid solutions also showed high c-axis orientation. With the increase of sintering temperatures from 1800 °C to 1950 °C, the degree of texture of TiB2 slightly decreased from 0.95 to 0.92 and the degree of texture of (Ti,Zr)B2 showed the big decreasing from 0.80 to 0.62.