Values of the microhardness of fullerite versus the hold time during the absorption and desorption of hydrogen; the measurements of were done at room temperature: absorption in an atmosphere of hydrogen at a pressure , , , ; the solid curves are plots of the analytical approximation (1) (a); the desorption process during a hold of the hydrogen-saturated samples in an atmosphere of air; the solid curve shows a plot of the analytical approximation (3) (b). The arrow indicates that the desorption was studied for the sample saturated with hydrogen at .
Dependence of the lattice parameter of fullerite on the saturation time in an atmosphere of hydrogen at pressure and temperature ; the measurements were made at room temperature. The solid curve is a plot of the analytical approximation (2) for the optimal values of the parameters.
Temperature dependence of the microhardness of crystals of pure and the solid solutions at different values of the saturation time in an atmosphere of hydrogen at pressure and temperature : single crystal of pure , single crystal after saturation for , single crystal after saturation for . The solid lines are a least-squares fit.
Temperature dependence of the lattice parameter of crystals of pure fullerite , the solid solution after saturation in an atmosphere of hydrogen at pressure and temperature for .
Microstructure of a single crystal on the habit plane (111) after saturation with hydrogen at pressure and temperature for . One can see a large crack running through the whole frame (the dark band) and the slip bands for systems of the type .
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