Characteristics and controlling of LaB_6_ZrB_2 eutectic microstructure

摘要

LaB_6-ZrB_2 eutectic composites were fabricated using electric arc furnace and EBZM (electron beam zone melting) technique. Orientated ZrB_2 fibers yielded in a LaB_6 matrix. The av- erage diameter of ZrB_2 fibers is about 0.2-1.2μm, and the length can be up to 100μm. For the ingot solidified with planar growth, the orientation relation of the phases