ELECTRODEPOSITION OF ZN DEPOSITS WITH HIGHLY PREFERRED ORIENTATION

Zn deposits with(0002)and(1011)highly preferred orientation were obtained in the solution of 0.8 mol/L ZnSO4,0.5 mol/L H2SO4 and 4.0×10-4 mol/LKMnO4 by controlling tlie deposition potential or current.The deposits with highly preferred orientation were studied by X-ray diffraction and scanning electron microscope.The results showed that tl1e diffraction patterns of the deposits with(0002)and(1011)highly preferred orientation were very similar to tlie corresponding patterns of Zn single crystals. But there were little disloction stresses in the deposits.The effort was made to explain the reason for the deposits with highly preferred orientation from the polarization curve of the solution.