In situ synthesis and microstructure characterization of TiC-TiB2-SiC ultrafine composites from hybrid precursor

► Hybrid polymer precursors were synthesized by reacting AHPCS with borazine and then with tetrabutyl titanate. ► A SiBCN ceramic with enhanced yield and thermal stable structure was obtained. ► A fine TiC-TiB2-SiC structure was established by optimizing the feeding content of the Ti source. ► Phase evolution of the composite was explored through cooperation of a variety of techniques.