Effect of graphitization

Recently, Dinwiddie et al. [14] reported the effects of short-time, high-temperatme exposures on the temperature dependence of the thermal conductivity of CBCF. Samples were exposed to temperatures ranging from 2673 to 3273 K, for periods of 10, 15, and 20 seconds, to examine the time dependent effects of graphitization on thermal conductivity measured over the temperature range from 673 to 2373 K. Typical experimental data are shown in Figs. 7 and 8 for exposure times of 10 and 20 seconds, respectively. The thermal conductivity was observed to increase with both heat treatment temperature and exposure time. 

Fig. 7. High-temperature neutron irradiation a-axis shrinkage behavior of pyrolytic graphite showing the effects of graphitization temperature on the magnitude of the dimensional changes [60].

Data relating to the galvanic effects of graphite contained in composite materials exposed to sodium chloride solution are to be found in References " . 

The catalytic effect of graphite A thus depends on iron impurities, e. g. Fe304, and probably also on iron sulfides or sulfates, because sulfur is also present in this graphite, and all these iron compounds are known catalysts of FC acylation [69, 73, 74], In this respect, it seems that FeCl3 could be the true catalyst generated in situ by the reaction of the different iron compounds with acid chloride and hydrogen chloride. In the... 

Petit C, Mendoza B, O Donnell D, Bandosz TJ. Effect of graphite features on the properties of Metal-Organic Framework/Graphite hybrid materials prepared using an in situ process, Langmuir 2011, TJ, 10234-10242. 

T. H. Ko, Y. K. Liao, and C. H. Liu. Effects of graphitization of PAN-based carbon fiber cloth on its use as gas diffusion layers in proton exchange membrane fuel cells. New Carbon Materials 22 (2007) 97-101. 

J. Wang, A.D. Ebner, T. Prozorov, R. Zidan, J.A. Ritter, Effect of graphite as a co-dopant on the dehydrogenation and hydrogenation kinetics of Ti-doped sodium aluminum hydride , J. Alloys Compd. 395 (2005) 252-262. 

Lowden and More (1989) and Lowden (1991) studied extensively the effects of graphite coating thickness on the mechanical properties of Niealon liber-SiC matrix... 

To obtain optimum response conditions for the biosensor based on carbon paste modified with polyphenol oxidase of jack fruit (A. in-tegrifolia L.) crude extract, the effect of graphite powder, fatty acids, and the enzyme concentrations were studied. The scan rate, pulse amplitude, and pH were also investigated. Table 23.1 summarizes the range over which each variable was studied and the optimal value found in those studies. 

Gardos, M., The Synergistic Effects of Graphite on the Friction and Wear of MoSj Films in Air, Trib. Trans., 31, 214, (1987). 

Fig.l. Effect of graphite addition on the mechanical strei th of ZT (0.8 1) with NaB02 (20%) as binder... 

In addition to the supporting self-citations [742,6,457,330], there was much early support for the formation of donor-acceptor complexes. Radke and Praus-nitz [743] interpreted the extensive loadings of phenols even at very low concentrations, in comparison with lower uptakes of several aliphatic adsorbates, as evidence for specific interaction with the activated carbon surface. Barton and Harrison [744] studied the effect of graphite outgassing temperature on the heat of immersion of benzene and attributed a shallow minimum at ca. 800°C to the effect of CO desorption, thus implicitly supporting the donor-acceptor complex proposal in terms of a reduction in the interaction between the partial charge on the carbonyl carbon atom and the 7t-electron cloud of the benzene molecule. ... 

The viscosity increase depends on particle size. Smaller particles increase the viscosity of the dispersion more rapidly but there is a big difference between the effect of graphite and carbon black on viscosity. It requires three times as much graphite as carbon black for a similar increase in viscosity. 

The distance between aggregates is a value which correlates with many properties of filled rubber. Figure 7.35 gives an example of the correlation with tanb. " Other applications were made with these properties ball rebound, effect of graphitization on properties of carbon black and parameters of carbon black which characterize structure. 

Table 2. Effects of graphitization of carbon black on reinforcement...

Measurements of the effect of graphite concentration in the positive plate on gas evolution have been made on flooded stationary cells with a nominal capacity of... 

Z. Feng, K. Komvopoulos, I. G. Brown, and D. B. Bogy, Effect of graphitic carbon films on diamond nucleation by microwave-plasma-enhanced chemical-vapor deposition, J. Appl Phys., 74(4) 2841-2849 (1993)... 

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