Additive Manufacturing of High and Ultra-High Temperature Ceramics and Composites: Processing, Characterization and Testing: Binder Jet 3D Printing, Post-processing, and Testing
Sponsored by: ACerS Engineering Ceramics Division
Program Organizers: Corson Cramer, Oak Ridge National Laboratory; Greg Hilmas, Missouri University of Science and Technology; Lisa Rueschhoff, Air Force Research Laboratory
Monday 4:00 PM
October 18, 2021
Room: A111
Location: Greater Columbus Convention Center
Session Chair: William Costakis, Air Force Research Laboratory
4:00 PM Invited
Binder Jet Additive Manufacturing of Novel Design, High Temperature, Ceramic Heat Exchangers: Benjamin Groth1; Jesse Blacker1; 1ExOne
The use of Binder Jet AM is a growing market for many applications and is being used as a tool to overcome limitations with traditional manufacturing, as well as alternative additive methods. One such application is the development of high temperature ceramic heat exchangers, specifically designed as Triply Periodic Minimal Surface (TPMS) heat exchangers. This work aims to assess the mechanical properties and necessary printing parameters and processes for binder jet AM of several high temperature material systems, namely: Silicon Carbide, Silicon Nitride, and UHTC materials such as Zirconium Diboride. Work to-date will be discussed on the above systems and requirements necessary to achieve high-density sintered pieces with the ultimate goal of developing an enabling technology for cost-effective heat exchangers and other highly-engineered devices.
4:40 PM Cancelled
Oxidation of 3D-printed SiC in Air and Steam Environments: Kenneth Kane1; Padraig Stack2; Danny Schappel1; Katherine Montoya3; Peter Mouche1; Elizabeth Sooby3; Kurt Terrani1; 1Oak Ridge National Laboratory; 2University of Akron; 3University of Texas
Ceramic 3D-printing is a rapidly growing field. Recently, a combined binder jetting and chemical vapor infiltration method has been demonstrated to be capable of printing highly pure, stoichiometric, and crystalline SiC. A targeted application of the method is to form the fuel matrix for advanced nuclear reactors, where the 3D-printed SiC will form the ceramic matrix that hosts encapsulated tristructural isotropic (TRISO) fuel particles. In the present study, the oxidation resistance of 3D-printed SiC is compared to CVD SiC at 1300° and 1425°C in air and steam environments, and finite element modelling is used to elucidate the differences in silica scale morphologies that arise from the rough 3D-printed surface. This research was sponsored by the Transformational Challenge Reactor Program and the Nuclear Energy University Programs, both under the Office of Nuclear Energy, Department of Energy.