Selected mechanical properties of gold,silver, aluminium and germanium coatings

Selected mechanical properties such as tensile properties, internal friction, internal stress, adhesion and crack formation of metallic coatings were investigated in the as-deposited and annealed conditions. In addition, the density, elastic constants and thermal expansion coefficient of the metallic coatings were measured on self-supported coatings and they agree well with tabulated values. The experimental procedures are presented and those characteristics peculiar to coatings are discussed.