Replication and characterization of 316L stainless steel micro-mixer by micro powder injection molding

Development of a feedstock formulation based on polypropylene for micro-powder soft embossing process of 316L stainless steel micro-channel part

“…Various investigations have been conducted, concerning the influence of physical or processing parameters such as size and loading rate of the powder in the mixture, the sintering temperature on the control and dimensional changes; density; mechanical properties and roughness surfaces of components have received increasing attention in recent years [5]. Meng et al [6] have conducted an experimental analysis on replication of micro-fluidic system by micro powder injection moulding using 316L stainless steel. In addition, they have also investigated the dimensional change and surface roughness of the micro-mixer.…”

“…Significant grain growth was also observed at the tooth. Meng et al [8] conducted an experimental analysis on the replication of a micro-fluidic system by micro-powder injection moulding using 316L stainless steel. Additionally, they also investigated the dimensional change and surface roughness of the micro-mixer.…”

Femtosecond laser micromachining of zirconia green bodies

“…One of the critical factors that limit the feature size is voids in a product induced by viscous behaviour of powder compounds. Several studies designed to deduce the optimal μ-PIM conditions, including the optimal binder system, feedstock, part geometry, mould design and conditions for filling the mould without forming cavities, have been reported in the literature (Liu et al, 2011;Meng et al, 2010;Yu et al, 2009). Another problem associated with μ-PIM is that a micro structure smaller than the powder size cannot be fabricated.…”

Fabrication of iron-nickel alloy microcomponents by centrifuge-assisted micromolding

“…Microcomponents are used in a wide range of applications including sensors, microfluidic systems, and biomedical systems [1]. Examples can be found from microwells for biomedical systems, micromixers for microfluidic systems, and microgears for micromachines [2][3][4][5]. There are large amounts of microfabrication techniques that have been developed for producing metal and alloy microcomponents, such as micromilling, microelectrodischarge machining (μEDM), electrochemical micromachining, and microdroplet deposition [6][7][8][9].…”

“…However, these techniques are generally limited by high costs and/or complicated operations. A promising approach for the large-scale production of microcomponents is micropowder injection molding (μPIM) [4,10]. However, there are still some potential problems that exist, such as the use of large amounts of binders leads to great difficulties in debinding, and the adhesion between green microcomponent and micromold usually destroys the microstructures during demolding [11][12][13].…”