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in group. With a value of 2000 W/mK it exceeds that of copper by a factor of five.-Graphite: Thermal conductivity 25-470 W/m.K ===== Therefore; a diamond has a higher thermal conductivity than graphite!---- … This means that carbon atoms. The high thermal conductivity may be used to distinguish diamond from cubic zirconia and glass. 4 (IUPAC group 14) of the periodic table. Diamond and graphite. Diamond is one of the best thermal conductors known, in fact diamond is a better thermal conductor than many metals (thermal conductivity (W/m-K): aluminum=237, copper=401, diamond=895). We monitored the evolution of thermal conductivity in thin graphite as a function of temperature and thickness and found an intimate link between high conductivity, thickness, and phonon hydrodynamics. K), which makes the diamond five times better at conducting heat than copper. Thermal conductivity parallel to the graphite sheets=1950, but thermal conduction perpendicular to the sheet=5.7. Each carbon atom can form four covalent bonds. Difference between the electrical conductivity of diamond and graphite are discussed as follows: In graphite, each carbon atom is covalently bonded to only three neighboring carbon atoms and these form layers of hexagonal network which are separated by a large distance. Both the specific thermal conductivity and the thermal conductivity/CTE value of the graphite-Cu composite were significantly higher than the corresponding values of the W-Cu composite used in thermal management. However, the average value for commercial pyrolytic graphite is considerably smaller. Moissanite, a crystalline form of silicon carbide that resembles diamond, has a comparable thermal conductivity. Carbon is an element. One of many remarkable properties of diamond is its unsurpassed thermal conductivity. Thus, it is suggested that the graphite-Cu composite has the potential to be an alternative for the electronic packaging materials. The thermal conductivity of a graphite crystal has been reported as high as 4180 W/m.K in the ab directions for highly crystalline, stress-annealed pyrolytic graphite.

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