Thermophysical characteristics of friction materials based on bronze with 12% tin with the addition of GK-1 graphite powder and foundry coke

The results of measurements thermal properties in the temperature range from 20 °C to 100 bronze with 12% tin obtained by powder metallurgy and 30 vol. % carbon-containing additive form powders graphite grade GK-1 (7-10 microns), foundry coke (less than 63 microns). specific heat capacity samples was measured using differential scanning calorimetry method. Thermal diffusivity conductivity were studied two different methods. In first case, is determined laser flash method calculation second coefficients flat source It has been established that vol.% composition makes it possible obtain value coefficient equal 23,97 W/(m·K) at its further increase 25,65 °C. 376,71 J/(kg·K) 20°C 399,26 addition a 9,03 ° C 10,76 ranges 391,80 413,57