H PROCESSING OF COPPER SURFACES

Changes in the crystallographic structure of polycrystalline copper su rface to the atomic hydrogen treatment are described. Samples of polyc rystalline OFHC copper plates were exposed to a flux of thermal hydrog en atoms with the density between 1 x 10(21) atoms/m2s and 1 X 10(23) atoms/m2s. Hydrogen atoms partially accommodate and recombine in the p otential well on the surface. During these processes copper atoms on t he surface displace, which leads to a recrystallization of the samples . The effects were investigated by a scanning electron microscope (SEM ).