Synthesis of Silicon Carbide Dendrite by the Arc Plasma Process and Observation of Nanorod Bundles in the Dendrite Arm

Silicon carbide dendrite (micrometer size) is produced by carbothermic reduction of rice husk ash in an arc plasma. Transmission electron microscopy reveals the occurrence of equispaced primary arms (60–70 nm in length) in the dendrite consisting of nanorod bundles. Each nanorod is seen to contain thin transverse lamellas, which appear like slip bands/twins in atomic layer thickness. A liquid phase Si‐based growth mechanism is discussed to understand the dendrite growth.