Brass thermal conductivity Table

Figure 5.6 Thermal conductivity apparatus and coaxial-cylinder cell, developed by Yata et al (1979a). (a) 1 high pressure vessel 2 fluid separator 3 heater 4 heat insulator 5 support table for bath 6 heat transfer fluid (water or glycerin) 7 screw propeller 8 standard resistance thermometer 9 thermocouples and heaters, (b) 1 inner cylinder 2 outer cylinder 3 upper guard cylinder 4 lower guard cylinder 5 inner heater 6 thermocouples 7 upper alumina insulator 8 lower alumina insulator 9 mica spacer 10 alumina piece 11 brass screw 12 alumina pin 13 brass screw 14 compensative heater 15 top closure of high pressure vessel.

When sparks are used for the ablation of electrically conducting solids, less changes with variations in the matrix composition than in the case of arc ablation occur. This is due to the fact that thermal volatilization plays less of a role. However, in the case of brass, it is seen from x-ray analyses of the ablated material on a Nudepore filter, for samples of the crater wall and the burning crater, that zinc volatilizes more than copper (Table 5), which makes the method difficult to apply to these samples. 

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