Si/SiC ceramics from wood of Indian dicotyledonous mango tree

Synthesis of SiC ceramics from processed cellulosic bio-precursor

“…This was different from the pyrolytic shrinkage characteristics of naturally grown plant precursors (e.g. woods or stems), which exhibit anisotropic pyrolytic shrinkages [15]. The isotropic shrinkages might arise from uniform distribution of fibrous bio-structures in the processed precursors and would probably be helpful to achieve directional property homogeneity for the ceramic materials synthesized from such precursors.…”

Infiltration mechanism of diamond/SiC composites fabricated by Si-vapor vacuum reactive infiltration process

“…(8). Mallick et al 29 reported biocarbon preforms with diameters smaller than 90 m were nearly completely filled with Si when treated by liquid Si-infiltration at 1600 • C under vacuum. The error between experimental and theoretical value was probably caused by the nonideal pore structure.…”

Cellular porous SiC ceramics derived from Indian dicotyledonous woods and their application potential as hot gas filtration materials

“…Wood specimen was shaped, dried and pyrolysed by heating up to 800uC in an electrically heated furnace to yield rectangular biocarbon preform (70613613 mm 3 ), following procedures described elsewhere. 19,20 It was further characterised in terms of pyrolytic weight loss, shrinkage, bulk density and microstructure.…”

“…19 Attempts have also been made at comparison of dicot wood and monocot stem as plant precursors for synthesis of Si/SiC based engineering ceramics. 20 In this work, LSIP was used to synthesise porous cellular SiC ceramic by replicating the structure of some Indian dicotyledonous woods. The role of processing parameters in the material properties will be discussed and the resulting microstructures will be characterised with respect to changes associated with the conversion of carbonaceous preforms into cellular porous SiC ceramics by LSIP.…”