Abstract
Based on taking combustion synthesis into high-gravity field to fabricate high-hardness bulk solidified TiC-TiB2 composite, layered composite of solidified TiC-TiB2 ceramic to Ti-6Al-4V alloy was obtained by the introduction of Ti-6Al-4V alloy plates at the bottom of graphite crucible. XRD, FESEM and EDS results showed that the layered composite was achieved in multi-scale (micron/submicron/micro-nanometer) and multi-level (TiC1-x-TiB-TiB2 + TiB2-Ti-TiC1-x-TiB + TiB2-TiC1-x-TiB-Ti + TiB-TiC1-x-Ti + TiC1-x-Ti + Ti) graded microstructure between the ceramic and Ti alloy, which was characterized by size and distribution of TiB2 and TiB, thereby paving a new way for developing light-weight materials for special engineering.
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