Henning Zeidler

Henning Zeidler

I am Full Professor for Additive Manufacturing (AM) at TU Bergakademie Freiberg (TUBAF) and Co-founder and CEO of AMtopus GmbH&Co.KG as well as chairman of the board of Beckmann-Institute for Technology Development e.V., all Germany. My work evolves around AM and post-processing, including related process chains. I have been exposed to AM since more than 25 years and am active in several positions in this regard, among them the 3DP pilot of Vanguard initiative and other advisory boards. I am involved in many international collaborative projects and networks on AM and sustainability. Since 2025 I am fellow of the Saxonian Academy of Sciences.

High gloss and sterile surfaces on complex shaped parts using PeP

Presentation abstract: Many metallic parts have high requirements on surface properties. Depending on their field of application, not only smooth, but also well-defined surfaces, i.e. in terms of particle detachment, gloss or sterility, must be set to reach the respective functionalities, such as minimal friction and wear or optimal cell- and minimal bacteria growth. For many parts, mechanical polishing procedures are state-of-the-art, but these are time-consuming and limited in their flexibility. This is especially true for additively manufactured (AM) parts, which are often geometrically complex. Plasma electrolytic Polishing (PeP), a high-voltage process combining anode dissolution and plasma-chemical processes in an aqueous electrolyte, can be considered a suitable alternative to established electrolytic polishing processes which often incorporate aggressive media such as acids. The presentation focuses on applications of PeP, also pointing out directions to introduce PeP to industrial process chains.