Novel composite filament usable in low-cost 3D printers for fabrication of complex ceramic shapes

Bending Properties of Lightweight Copper Specimens with Different Infill Patterns Produced by Material Extrusion Additive Manufacturing, Solvent Debinding and Sintering

“…The material with a liquid-like consistency is pushed through a die and then selectively deposited, layer-by-layer, to shape a threedimensional object [15]. MEX allows the production of complex-shaped parts not only from thermoplastics [20], fiber-filled composites [21], and low melting point (~450 • C) metallic alloys [22], but also from high-melting-point (>1000 • C) metallic alloys [15,[23][24][25][26][27][28][29][30], such as copper [31], ceramics [15,[32][33][34][35][36][37][38][39], and hard metals and cermets [40][41][42]. Highly-filled thermoplastic filaments are used as the feedstock material to obtain metallic, ceramic and cermet parts.…”

“…The main disadvantage of using filaments as feedstock is that binder systems must be adjusted to have enough mechanical strength and flexibility so the filament can be reliably processed in standard commercial MEX machines. Nevertheless, new binders are available, and filaments with copper and other sinterable powders have been reported in the literature [15,29,31,32,39,49,[51][52][53][54][55][56][57][58][59][60][61][62][63][64]. Therefore, due to the increasing popularity of filamentbased MEX, this technique was selected for shaping copper specimens in this study.…”

Rheological properties of powder blend for extrusion of ceramic-polymer filament used in 3D printing

“…Being printed out, the objects are ready for work right away without further processing. Although polymers are the main materials the technology works with, the latest trends include ceramics as well in the list of prospective materials [2][3][4]. Today, several scientific groups are conducting research on obtaining ceramic objects by FDM through developing ceramic-polymer filaments [2][3][4][5][6].…”

“…Although polymers are the main materials the technology works with, the latest trends include ceramics as well in the list of prospective materials [2][3][4]. Today, several scientific groups are conducting research on obtaining ceramic objects by FDM through developing ceramic-polymer filaments [2][3][4][5][6]. There are various methods for making filament for 3D printing, such as single-screw extrusion, twin-screw extrusion, chemical solvent method, etc.…”

Determining Optimal Robocasting Process Parameters for Additive Manufacturing of Ceramic Parts

“…Cracks were observed on Part A base which may aroused by air gaps between the layers. If air is trapped between the layers it may cause crack propagation during the firing of the green part [25,26]. Moreover, the extruder rate of the machine should be adjusted according to the consistency of the mud as stated in [27].…”