| 摘要 |
<p>Prepn. on a support for surfaces selectively absorbing solar energy, of surfaces having a high absorptive power and a reduced thermal emission power, with a high resistance to temp. variation and to ambient influences, comprises electrochemically forming highly structured metallic coatings the structural elements of which has dimensions, diameters and mutual spacings of the order of 0.1-1 mu. The surfaces produced have good stability under temp. variations, good resistance to oxidn., corrosion and friction. They have good adherence to their substrates.</p> |
