.... In this paper, the formation of sealed metal microchannels was demonstrated using stainless-steel binder jetting with bronze infiltration. To create small negative features, bronze infiltrant must fill the porous part produced by binder jetting without filling the negative features. This was achieved through...

...Quinton Porter; Ming Li; Zhijian Pei; Chao Ma This technical brief reports an experimental investigation on the effect of feed region density on resultant sintered density and intermediate densities (powder bed density and green density) during the binder jetting additive manufacturing process...

...Quinton Porter; Zhijian Pei; Chao Ma The ability to produce a dense part of Al-based metal matrix nanocomposites using binder jetting followed by infiltration was investigated. A green density above 1.58 g/cm 3 was determined to be necessary for spontaneous direct liquid infiltration to commence...

...Issa Rishmawi; Mihaela Vlasea This study focuses on developing and demonstrating a straightforward workflow for identifying pathways to increase green part density in binder jetting additive manufacturing (BJAM) using statistically driven process maps. The workflow was applied to investigate...

...Wenchao Du; Jorge Roa; Jaehee Hong; Yanwen Liu; Zhijian Pei; Chao Ma This paper reports a study on the effects of particle size distribution (tuned by mixing different-sized powders) on density of a densely packed powder, powder bed density, and sintered density in binder jetting additive...

... their environmental impacts. This article structures the current work on the environmental impacts of metal powder bed processes: selective laser melting (SLM), direct metal laser sintering (DMLS), electron beam melting (EBM), and binder jetting (BJ). We review the potential benefits and pitfalls of AM in each phase...

...Ming Li; Wenchao Du; Alaa Elwany; Zhijian Pei; Chao Ma Binder jetting is an additive manufacturing process utilizing a liquid-based binding agent to selectively join the material in a powder bed. It is capable of manufacturing complex-shaped parts from a variety of materials including metals...

...Evan Wheat; Gitanjali Shanbhag; Mihaela Vlasea The master sinter curve (MSC) is an empirical model used to predict the density of a part after being sintered. The model is typically applied to components that undergo isotropic shrinkage. Parts manufactured using binder jetting additive...

...Yun Bai; Candace Wall; Hannah Pham; Alan Esker; Christopher B. Williams Understanding the binder–powder interaction and primitive formation is critical to advancing the binder jetting Additive Manufacturing process and improving the accuracy, precision, and mechanical properties of the printed...