Characterization of nano / micro bimodal 316L SS powder obtained by electrical explosion of wire for feedstock application in powder injection molding

Krinitcyn, M. G.; Toropkov, Nikita; Первиков, А. В.; Глазкова, Е. А.; Лернер, М. И.

doi:10.1016/j.powtec.2021.08.061

Cited by 9 publications

(8 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The positive effect of using bimodal powders obtained by mixing micro-and nanoparticles when preparing the bimodal feedstocks has also been shown by many authors [8,10,17,19,22,[32][33][34] and in our recent study [28,35]. Meanwhile, an increase in the bimodal feedstock viscosity with an increase in the content of nanoparticles above the optimal value was noted by Oh J.W.…”

Section: The Powder-polymer Feedstock Characterizationsupporting

confidence: 73%

Synthesis of Ti–Al Bimodal Powder for High Flowability Feedstock by Electrical Explosion of Wires

Лернер

Первиков

Глазкова

et al. 2022

Metals

View full text Add to dashboard Cite

In this research, Ti–Al bimodal powders were produced by simultaneous electrical explosion of titanium and aluminum wires. The resulting powders were used to prepare powder–polymer feedstocks. Material characterization involving X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and melt flow index (MFI) determination were carried out to characterize bimodal powders obtained and evaluate the influence of the powder composition on the feedstock flowability. The bimodal distribution of particles in powders has been found to be achieved at a current density of 1.2 × 107 A/cm2 (the rate of energy input is 56.5 J/μs). An increase in the current density to 1.6 × 107 A/cm2 leads to a decrease in the content of micron particles and turning into a monomodal particle size distribution. The use of bimodal powders for powder–polymer feedstocks allows to achieve higher MFI values compared with monomodal powders. In addition, the use of electroexplosive synthesis of bimodal powders makes it possible to achieve a homogeneous distribution of micro- and nanoparticles in the feedstock.

show abstract

Section: The Powder-polymer Feedstock Characterizationsupporting

confidence: 73%

Synthesis of Ti–Al Bimodal Powder for High Flowability Feedstock by Electrical Explosion of Wires

Лернер

Первиков

Глазкова

et al. 2022

Metals

View full text Add to dashboard Cite

show abstract

“…This section presents the experimental studies of the melt flow index (MFI) of highly filled feedstocks with bimodal powder [ 40 ].…”

Section: Resultsmentioning

confidence: 99%

“…A metal bimodal powder was obtained by the electrical explosion of the wire (EEW) method with a controlled ratio of dispersed phases in a single technological process [ 7 , 40 ]. The use of lower energy allows obtaining bimodal nano/micropowders [ 41 ].…”

Section: Methodsmentioning

confidence: 99%

Mathematical modeling of high-energy materials rheological behavior in 3D printing technology

Kudryashova

Toropkov

Лернер

et al. 2023

Heliyon

View full text Add to dashboard Cite

“…Figure 4B) by dry coating. Metal powder feedstocks typically are produced by gas atomization from the melt or by wire arc approaches (Krinitcyn et al, 2021), thus, spherically shaped particles are obtained. Surface functionalization to tune flowability there is only necessary for cohesive materials of rather small primary particle size (<25 μm) (Karg et al, 2019).…”

Section: Powder Bed Fusion Additive Manufacturingmentioning

confidence: 99%

Dry powder coating in additive manufacturing

Schmidt

Peukert

2022

Front. Chem. Eng.

View full text Add to dashboard Cite

Dry powder coating is used in many industries to tailor the bulk solid characteristics of cohesive powders. Within this paper, the state of the art of dry coating of feedstock materials for powder based additive manufacturing (AM) processes will be reviewed. The focus is on feedstock materials for powder bed fusion AM processes, such as powder bed fusion of polymers with a laser beam and powder bed fusion of metals with lasers or an electron beam. Powders of several microns to several ten microns in size are used and the feedstock’s bulk solid properties, especially the flowability and packing density are of immanent importance in different process steps in particular for powder dosing and spreading of powder layers onto the building area. All these properties can be tuned by dry particle coating. Moreover, possibilities to improve AM processability and to manipulate the resulting microstructure (c.f. grain refinement, dispersion strengthening) by adhering nanoparticles on the powders will be discussed. The effect of dry coating on the obtained powder properties along the whole AM process chain and the resulting part properties is assessed. Moreover, appropriate characterization methods for bulk solid properties of dry-coated AM powders are critically discussed.

show abstract

Characterization of nano / micro bimodal 316L SS powder obtained by electrical explosion of wire for feedstock application in powder injection molding

Cited by 9 publications

References 49 publications

Synthesis of Ti–Al Bimodal Powder for High Flowability Feedstock by Electrical Explosion of Wires

Synthesis of Ti–Al Bimodal Powder for High Flowability Feedstock by Electrical Explosion of Wires

Mathematical modeling of high-energy materials rheological behavior in 3D printing technology

Dry powder coating in additive manufacturing

Contact Info

Product

Resources

About