Optimization of radio-frequency plasma parameters for spheroidization of zirconium oxide powders

Nagulin, K. Yu.; Nazarov, Ravil M.; Efimochkin, I.U.; Gil'mutdinov, A. Kh.

doi:10.1016/j.surfcoat.2019.125196

Cited by 14 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High values of particle spheroidization and fractional composition homogeneity are achieved after plasma treatment. A comparative study of thermal barrier coatings based on yttria-stabilized zirconium oxide powder demonstrated that deposited coating thickness, powder dispersion degree, and material efficiency of plasma-spheroidized powder are comparable to those of a high-quality commercial powder [ 108 ].…”

Section: Powder Materials Used For Additive Manufacturingmentioning

confidence: 99%

Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review

et al. 2021

View full text Add to dashboard Cite

The term “critical raw materials” (CRMs) refers to various metals and nonmetals that are crucial to Europe’s economic progress. Modern technologies enabling effective use and recyclability of CRMs are in critical demand for the EU industries. The use of CRMs, especially in the fields of biomedicine, aerospace, electric vehicles, and energy applications, is almost irreplaceable. Additive manufacturing (also referred to as 3D printing) is one of the key enabling technologies in the field of manufacturing which underpins the Fourth Industrial Revolution. 3D printing not only suppresses waste but also provides an efficient buy-to-fly ratio and possesses the potential to entirely change supply and distribution chains, significantly reducing costs and revolutionizing all logistics. This review provides comprehensive new insights into CRM-containing materials processed by modern additive manufacturing techniques and outlines the potential for increasing the efficiency of CRMs utilization and reducing the dependence on CRMs through wider industrial incorporation of AM and specifics of powder bed AM methods making them prime candidates for such developments.

show abstract

Section: Powder Materials Used For Additive Manufacturingmentioning

confidence: 99%

Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review

et al. 2021

View full text Add to dashboard Cite

show abstract

“…During the heating process, the molten metal particles can transfer to spherical droplets under the influence of surface tension. The droplets then rapidly solidify into spherical powders with enhanced properties [18][19][20]. Through the use of the IPS technology, the structure of ceramic powders can also be controlled to achieve specific structures and properties [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Induction Plasma Spheroidization on the Properties of Yttrium-Stabilized Zirconia Powders and the Performance of Corresponding Thermal Barrier Coatings for Gas Turbine Engine Applications

Peng,

Yu,

Dong

et al. 2024

Coatings

View full text Add to dashboard Cite

To modify the structure of thermal barrier coatings and improve their high-temperature resistance, induction plasma spheroidization (IPS) technology was applied to regulate the structure of YSZ powders in this study. The surface morphology, particle size distribution, phase composition, and internal microstructure of the conventional agglomerated and spheroidized powders were characterized using scanning electron microscopy and focused ion beam analysis methods. The results showed that the microstructure of the powders presented uneven evolution in the induction plasma stream. Due to the existence of the temperature gradient along the radial direction of the powders, the IPS powders consisted of outer dense shells and internal porous cores. The mechanical property of such shell–core structure was analyzed by using the finite elemental simulation method. In addition, coatings were prepared using the IPS powders and the agglomerated powders. The IPS coating showed improved water-cooling thermal cycling resistance compared to the conventional coating.

show abstract

“…Various methods have been developed to prepare spherical powders. The radio frequency (RF) thermal plasma is one of the typical and effective methods for preparing spherical powders, especially for the refractory material, because it has some unique advantages [3][4][5][6][7]. For example, the high temperature (∼10 000 K) and high enthalpy (tens of MJ) of the plasma [8,9] can effectively reduce the time required to heat the particles to melt; steep temperature gradient [10] allows particles to rapidly solidify and maintain the spherical particle morphology; relatively slow velocity [11] to ensure the residence time of the particles in the high-temperature region of the plasma; electrode-free device structure to guarantee that the plasma environment is not contaminated during the spheroidization process and the high process purity of the treated particles.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional numerical simulation of heating and melting behaviors of cerium oxide powders in radio frequency thermal plasma

Zhou

et al. 2023

Plasma Sci. Technol.

View full text Add to dashboard Cite

The present study aims at the numerical simulations of the melting process of cerium oxide particles in RF thermal plasma. The physical model and the calculating method were described firstly; the interaction between cerium oxide particles and plasma were analyzed; specific attention was given to the effects of particle initial size, injection velocity on the particle melting and trajectory in plasma. The influence of the temperature field and velocity field distribution of the plasma around the particle trajectory on the melting effect is analyzed, and the relationship between the heat absorption efficiency of the particles and the particle size reduction process is further determined; It is also found that there exists an optimal particle initial injection velocity which led to a more concentrated final particle size distribution and a more significant reduction of particle size. The results could provide effectively guidance for understanding the plasma spheroidization process of uranium dioxide and cerium dioxide powder particles.

show abstract

Optimization of radio-frequency plasma parameters for spheroidization of zirconium oxide powders

Cited by 14 publications

References 21 publications

Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review

Powder Bed Fusion Additive Manufacturing Using Critical Raw Materials: A Review

The Effects of Induction Plasma Spheroidization on the Properties of Yttrium-Stabilized Zirconia Powders and the Performance of Corresponding Thermal Barrier Coatings for Gas Turbine Engine Applications

Three-dimensional numerical simulation of heating and melting behaviors of cerium oxide powders in radio frequency thermal plasma

Contact Info

Product

Resources

About