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Plenary speaker I

  

Prof. Dr. Giorgia Franchin

Dipartimento di Ingegneria Industriale, University of Padova, Italy                                                                                                                                                             
Tuesday, July 01, 09:40 - 10:10

Exploring the potential of liquid ceramic precursors in additive manufacturing feedstocks

Slurry-based feedstocks, containing powders, pose distinct challenges in additive manufacturing processes: the high amount (and small size) of powder required for densification results in high viscosity, scattering, and sedimentation phenomena in vat photopolymerization processes, as well as clogging problems at the nozzle for extrusion-based processes. Our research activities have therefore focused on substituting conventional powders with liquid precursors, ranging from preceramic polymers to sol-gel solutions. This versatile approach can be adapted to synthesize silicon-based materials, including glass and alumino-silicates, as well as carbides. Despite the many advantages, challenges remain related to the reactivity of such liquid systems and the removal of solvents and organic moieties typically present. Here, we present our strategies for producing high-quality ceramic components using various liquid-based feedstocks and different additive manufacturing techniques, including direct ink writing, digital light processing, robotic and volumetric additive manufacturing.

 

Plenary speaker II

  

Nikolai Sauer

CTO, Bosch Advanced Ceramics, Bosch Business Innovations GmbH, Germany                                                                                                                                                                             
Tuesday, July 01, 10:10 - 10:30

Ceramic Additive Manufacturing in Series Production: Industrial Applications and Perspectives
Ceramic Additive Manufacturing (CAM) has evolved significantly over the past decade, transitioning from a prototyping tool to a viable solution for series production. With ten years of experience in this innovative technology, Bosch Advanced Ceramics has solidified its position as a leader in the field. Initially utilized for rapid prototyping, CAM has now established itself in the production of complex components made from oxide ceramics, such as alumina and zirconia.
Nikolai Sauer, CTO of Bosch Advanced Ceramics, will address the opportunities and challenges associated with implementing CAM in series production. As a contract manufacturer, Bosch Advanced Ceramics has successfully navigated these challenges, and we will showcase several customer projects that highlight the intricacies of integrating CAM as a new manufacturing method for series production. Each case study will illustrate the specific hurdles encountered, from design modifications to scaling production, along with the innovative solutions developed to overcome them.
By leveraging our decade-long experience, we aim to provide insights into how CAM can enhance productivity and enable the creation of intricate geometries that were previously unattainable with traditional methods. Join us as we explore the promising future of ceramic additive manufacturing in series production and its implications for various industrial sectors.

 

Plenary speaker III

  

Dr. Clara Minas-Payamyar

Head of Development Mechanical Engineering, Schunk Ingenieurkeramik GmbH, Germany                                                                                                              
Wednesday, July 02, 09:00 - 09:30

Reaction bonded technical ceramics via binder jet 3D printing

Powder bed 3D printing, also known as binder jetting, is one of the most efficient additive manufacturing technologies to create large and complex shaped ceramic parts. It enables the production of prototypes as well as final products, which may not be realized by established shaping techniques. One main drawback of the technology is the immanent porosity of printed green bodies, due to dry powder deposition methods. This usually prevents the creation of parts with material properties which are technically sufficient.
In contrast to the vast majority of technical ceramics, powder bed porosity is not an obstacle for the production of components made of reaction bonded silicon carbide (RBSiC). In fact, a porous network is a prerequisite for the liquid silicon infiltration (LSI) process which follows the creation of green bodies. Thus, it is feasible to manufacture complex and crack free parts with material properties that are comparable to conventionally processed RBSiC.
The presentation will give some insights into material and process development, which was key to enable the production of three dimensional printed RBSiC as well as reaction bonded boron carbide composites. Today we can exploit process-related advantages of additive manufacturing providing a new dimension of constructive design potentials and address demanding market segments of space, mechanical engineering, and ballistic protection.