Electrical Conductivity of SiC/Si Composites Obtained from Wood Preforms

Abstract

Biomorphic SiC/Si composites were produced from pine and beech wood, and the corresponding electrical conductivity was determined as a function of the temperature. Firstly, wood preforms were pyrolized at 1050 • C in nitrogen. Then, the pyrolized preforms were impregnated with liquid silicon and kept at 1600 • C for 2 h in vacuum. The SiC/Si composites were obtained due to the produced carbothermal reaction. As expected, the resulting electrical conductivity of these composites increased with the temperature and with the silicon content.

Controlling the electrical resistivity of porous silicon carbide ceramics and their applications: A review

“…SiC heating elements have been used for several years 32,47,[154][155][156][157][158] and different applications of these elements demand specific designs, as schematically shown in Figures 9A and B. A rod-type commercial SiC heating element, which is commonly used in high temperature furnaces, is shown in Figure 9A (reproduced with permission from Ref.…”