Abstract

Digital printing of metals is probably the most important element for “functional” additive manufacturing. Printed structures made up of polymers usually lack the required mechanical, electrical, and thermal properties for functional structures and devices. Metal deposition by conventional methods, either by evaporation or by electrochemistry, is quite inadequate for fast built-up, multilayered 3D structures. In this chapter, we describe methods and materials for additive manufacturing of metal by classifying them into two categories. The first category deals with the differences between 2D and 3D additive manufacturing of metal. The second category deals with the metallic phase used for the manufacturing process. The metallic phase includes the following three main phases: metallic particle, metallic complex, or molten metallic droplet.

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