High-temperature effects on the electrical properties and macrostructure of carbon composites
Source abstract
Abstract
The electrical conductivity of MPG-6 and MPG-7 carbon composites has been measured before and after 1.4-MeV electron irradiation and ac resistive heating up to degradation temperatures (above 2500°C). The results demonstrate that both heating and electron irradiation reduce the resistivity of the materials and increase the defect density at the macrostructural level, while x-ray diffraction analysis reveals no significant structural changes in the temperature range studied. Detailed characterization of the composites suggests that their strength is limited by crystallite or grain boundaries.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced ceramic materials synthesis · Advancements in Battery Materials · Ion-surface interactions and analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (12)
Show source-provided references
1. Avilov, M.S., Antoshin, A.V., Gubin, K.V., et al., Project of Rotating Carbon High-Power Neutron Target: Conceptual Design, Proc. 2001 Particle Accelerator Conf., Chicago, 2001.
2. Avilov, M.S., Gubin, K.V., Kot, N.Kh., et al., Project of Rotating Carbon High-Power Neutron Target: Calculation of the Target Thermal and Mechanical Operation Conditions, Proc. 2001 Particle Accelerator Conf., Chicago, 2001.
3. Kotosonov, A.S., Macrostructural Characterization of Synthetic Polycrystalline Graphites from Electrical Conductivity and Magnetoresistance Data, Dokl. Akad. Nauk SSSR, Fiz. Khim., 1982, vol. 262, no. 1, pp. 133–135.
4. Kotosonov, A.S., Electrical Conductivity of Carbon Materials with Quasi-Two-Dimensional Graphite Structure, Fiz. Tverd. Tela (Leningrad), 1989, vol. 31, no. 8, pp. 146–152.
5. Powder Diffraction File, Swarthmore: Joint Committee on Powder Diffraction Standards, no. 41-1487.
6. Zhmurikov, E.I., Romanenko, A.I., Anikeeva, O.B., et al., Reliability and Stability of a Graphite-Composite-Based High-Temperature Neutron Target Converter, Preprint of Budker Inst. of Nuclear Physics, Sib. Div., Russ. Acad. Sci., Novosibirsk, 2005, no. 2005-2.
7. Gantmakher, V.F., Elektrony v neuporyadochennykh sredakh. Prilozhenie A.4 (Electrons in Disordered Media, Appendix A.4), Moscow: Fizmatlit, 2003.
8. Kalinin, Yu.E., Sitnikov, A.V., and Stognei, O.V., Electrical Properties and Magnetoresistance of Amorphous Metal-Dielectric Nanocomposites, IV Mezhdunarodnaya konferentsiya “Khimiya tverdogo tela i sovremennye mikro-i nanotekhnologii” (IV Int. Conf. on Solid-State Chemistry and Advanced Micro-and Nanotechnologies), Kislovodsk-Stavropol: North Caucasian State Technological Univ., 2004.
9. Balberg, I., A Comprehensive Picture of the Electrical Phenomena in Carbon Black-Polymer Composites, Carbon, 2002, vol. 40, pp. 139–143.10.1016/S0008-6223(01)00164-6 ↗
10. Svoistva konstruktsionnykh materialov na osnove grafita. Spravochnik (Properties of Graphite-Based Structural Materials: A Handbook), Sosedov, V.P., Ed., Moscow: Metallurgiya, 1975.
11. Broek, D., Elementary Engineering Fracture Mechanics, Dordrecht: Kluwer, 1978.
12. Samoilov, V.M., Young’s Modulus and Strength of Various Classes of Synthetic Graphites, III Mezhdunarodnaya konferentsiya “Uglerod: fundamental’nye problemy nauki, materialovedenie, tekhnologiya” (III Int. Conf. Carbon: Fundamental Scientific Issues, Materials Research, and Technology), Moscow: Mosk. Gos. Univ., 2004, poster session.