Abstract: Sputter targets of bismuth with 0.2 to 10% by weight manganese for producing optically transparent surface layers which reflect heat in combination with silver layers on panes of glass and of plastic achieve an improved resistance to UV in silver layers if the manganese is present in the form of the intermetallic compound BiMn in an even, finely dispersed distribution within the metallic bismuth matrix.

Abstract: A method for working high-purity, mechanically strong targets containing brittle phases in the equilibrium state. First a porous body is manufactured from part of the component with a higher melting point and thereafter the porous body is impregnated with an impregnating composition corresponding to the remainder of the components required to form the ultimate composition of the target. The composition of the impregnation material must be selected in such a manner that the reaction between the impregnation material and the porous body shall produce no phases of low melting points.