A study of surface treatment of aluminium alloy samples by measuring light stimulated electron emission and contact potential

Tests on samples anodized in a tartrate solution indicated that porefree thin oxide films prevent almost all light stimulated electron emission. Probably "pores" are requisite for emission. The c.p. and emission as function of the pickling time in chromic-sulfuric acid solution could be explained qualitatively. The micro etch pit structure with...