Production of SAC305 powder by ultrasonic atomization

Wisutmethangoon, Sirikul; Plookphol, Thawatchai; Sungkhaphaitoon, Phairote

doi:10.1016/j.powtec.2011.02.016

Cited by 21 publications

(14 citation statements)

References 5 publications

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“…The principle of metal powder production through UA has been known for a long time already and has at first been applied to elements and alloys with low liquidus temperatures, such as Pb, Sb, or Sn-Zn alloys, for example, for solders [20][21][22]. Recent studies have also successfully applied a UA approach to materials with higher liquidus temperatures such as steels [23,24], Ni-Mn-Ga, Ti alloys, and Fe-Cr-Mn-Ni high entropy alloys [23].…”

Section: Discussionmentioning

confidence: 99%

Flexible Powder Production for Additive Manufacturing of Refractory Metal-Based Alloys

Hinrichs¹,

Kauffmann²,

Schliephake³

et al. 2021

Metals

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The quality and properties of metal powders are essential for powder metallurgical (PM) processes in general and for additive manufacturing (AM) processing routes in particular. Thus, a variety of atomization technologies were established meeting the multiple needs of the different processing technologies. However, the production of refractory metal alloy powder remains challenging due to their high liquidus temperatures (>2000 °C), the formation of brittle intermetallic phases, as well as the reactivity with and sensitivity to interstitials of the constituting elements. In this contribution, powders made of Mo-20Si-52.8-Ti (at.%) were produced by a novel ultrasonic atomization (UA) process at laboratory-scale using an industrial electrode induction gas atomization (EIGA) process with a modified electrode concept for the first time. UA allows flexibility in alloy composition due to the arc melting-based principle, while the EIGA electrode is PM manufactured from elemental powders to provide similar flexibility on a larger scale. The powders resulting from these two processes were compared with respect to size distribution, sphericity, microstructure and phase constitution, chemical composition, and interstitial impurity content. In addition, several powder batches were produced with the UA process in order to assess the process reliability and stability. The properties, quality, and quantities of UA powders perfectly meet the requests for alloy development for powder bed fusion AM, while the modified EIGA process allows the upscaling of the alloy powder quantities.

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Section: Discussionmentioning

confidence: 99%

Flexible Powder Production for Additive Manufacturing of Refractory Metal-Based Alloys

Hinrichs¹,

Kauffmann²,

Schliephake³

et al. 2021

Metals

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“…• New production methods, like small and flexible atomization plants where low amounts of completely new, often expensive, and high-quality powders may be produced [165][166][167]; • Powders with complex chemistry and controlled phase composition or even crystallinity, like amorphous metallic glasses [168][169][170], spinel powders [171], etc.…”

Section: Feedstock Used In Thermal Spray Processesmentioning

confidence: 99%

Review of Functionally Graded Thermal Sprayed Coatings

et al. 2020

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The paper briefly describes major thermal spray techniques used to spray functionally graded coatings such as atmospheric plasma spraying, high velocity oxy-fuel spraying, suspension and solution precursor plasma spraying, and finally low and high pressure cold gas spray method. The examples of combined spray processes as well as some examples of post spray treatment including laser and high temperature treatments or mechanical one, are described. Then, the solid and liquid feedstocks used to spray and their properties are shortly discussed. The reviewed properties of functional coatings include: (i) mechanical (adhesion, toughness, hardness); (ii) physical (porosity, thermal conductivity and diffusivity, thermal expansion, photo-catalytic activity), and; (iii) bioactivity and simulated body fluid (SBF) corrosion. These properties are useful in present applications of functionally graded coatings as thermal barriers, the bioactive coatings in prostheses, photo-catalytic coatings in water treatment, coatings used in printing industry (anilox and corona rolls). Finally, some of the future possible fields of functional thermal sprayed coatings applications are discussed, e.g., to coat polymer substrates or to use the cheap technology of low pressure cold gas spray method instead of expensive technology of vacuum plasma spraying to obtain bond coatings.

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“…In contrast, ultrasonic vibrations have lower amplitude and frequencies over 16 kHz, which is powerful enough to create unique (capillary) wave patterns and cavitation at the bottom surface of the sonotrode [61] , [62] , [63] . This principle is largely explored in ultrasonic atomizers to produce fine liquid droplets or liquid metals to produce powder particles [64] , [65] .…”

Section: Introductionmentioning

confidence: 99%