caa a22 4500 477091814 CHVBK 20180405111517.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF00489809 doi (NATIONALLICENCE)springer-10.1007/BF00489809 Electrical resistivity of porous carbon materials, "Woodceramics” at low temperatures [Elektronische Daten] [Kiyotaka Shibata, Kiyokazu Kasai, Toshihiro Okabe, Kouji Saito] Woodceramics obtained by carbonizing woody materials are new carbon materials recently developed for industrial use. They are porous, light, hard and cheap to produce and have heat and corrosion resistance. They are being considered for applications in various fields. We investigated the dependence of the electrical resistivity of Woodceramics at temperatures between 100 K and 300 K, and considered the conduction mechanism of Woodceramics which are porous conductors. The electrical resistivity of Woodceramics decreases as sintering temperature increases. It varies over a wide range. And the resistivity dependence on the temperature of Woodceramics is similar to that of a semiconductor. We propose that the semiconducting behavior is caused by an energy gap decrease which depends on the sintering temperature, as a result of change in size of the graphite micro-crystallites in glassy carbon which is present in Woodceramics. Kluwer Academic Publishers, 1996 Woodceramics nationallicence porous carbon nationallicence electrical resistivity nationallicence energy gap nationallicence Shibata Kiyotaka Aomori Polytechnic College, Iizume, 037, Gosyogawara, Japan aut Kasai Kiyokazu Aomori Polytechnic College, Iizume, 037, Gosyogawara, Japan aut Okabe Toshihiro Industrial Research Institute of Aomori Prefecture, 80, Fukuromachi, 036, Hirosaki, Japan aut Saito Kouji Industrial Research Institute of Aomori Prefecture, 80, Fukuromachi, 036, Hirosaki, Japan aut Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 287-290 1380-2224 2:4<287 1996 2 10934 https://doi.org/10.1007/BF00489809 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00489809 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Shibata Kiyotaka Aomori Polytechnic College, Iizume, 037, Gosyogawara, Japan aut NATIONALLICENCE 700 1- Kasai Kiyokazu Aomori Polytechnic College, Iizume, 037, Gosyogawara, Japan aut NATIONALLICENCE 700 1- Okabe Toshihiro Industrial Research Institute of Aomori Prefecture, 80, Fukuromachi, 036, Hirosaki, Japan aut NATIONALLICENCE 700 1- Saito Kouji Industrial Research Institute of Aomori Prefecture, 80, Fukuromachi, 036, Hirosaki, Japan aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 287-290 1380-2224 2:4<287 1996 2 10934 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer