Multi-Material Metal Additive Manufacturing Approaches Based On Binder Jetting And Co-sintering

There is growing interest in multi-material additive manufacturing due to its numerous benefits across a wide range of applications. Although polymer-based multi-material technologies have been established for some time, metallic multi-material technologies are less mature. They have primarily relied on Directed Energy Deposition technologies and, more recently, Powder Bed Fusion. However, for applications requiring higher productivity or longer production runs, sinter-based multi-material technologies like Binder Jetting would be a beneficial approach. In this paper, we present the results of a study on creating multi-material structures using Binder Jetting and co-sintering. Specifically, we explore co-sintering multi-material parts together by sinter-joining. We discuss our approaches and findings, including limitations and applicability for various geometries.