Effect of microplasma spraying parameters on the loss of sprayed Zr wire and coating porosity

Voinarovych, S.G.; Alontseva, Darya; Khozhanov, Alexandr; Krasavin, A.; Kyslytsia, Oleksandr; Kalyuzhny, S.N.

doi:10.26577/rcph.2021.v79.i4.10

Cited by 2 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the obtained coordinates, the profiles of metallization figures were constructed in Mathcad (PTC, Montreal, QC, Canada) software environment and the functions describing the profiles were determined for the large and small axes of the spray spot, along which the areas of metallization figures were calculated. An analysis of the profiles of zirconium metallization figures, previously described by the authors [22], showed that the profile of the metallization figures during MPS is reliably described by the Gaussian function or the normal distribution, represented in Eq. ( 2) [24]:…”

Section: Materials and Research Methodsmentioning

confidence: 90%

“…The parameters of the MPS of electrically insulating and resistive coatings are given in Table 1. The choice of these parameters was based on the analysis of the results of previous studies by the authors [22] and the capabilities of the MPS-004 installation. A previous article [22] presents the results of obtaining Zr coatings with a given porosity of 20% on a Ti6Al4V titanium alloy and substantiates the choice of optimal parameters for efficient spraying of Zr coatings on a steel substrate.…”

Section: Materials and Research Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Microplasma-sprayed multilayer coatings for electric heating elements

Kaliuzhnyi

Alontseva

Voinarovych

et al. 2022

Materials Science-Poland

View full text Add to dashboard Cite

The paper presents new results on the application of microplasma spraying (MPS) for manufacturing electric heating elements (EHEs) consisting of a St3 steel plate (the substrate) with a sprayed electrically insulating Al2O3 sublayer (400±50 μm thick) and TiO2 electric heating tracks (4 mm width; 150±50 μm thickness). Measurements of the temperature of the multilayer coating with a thermal imager enabled determination of the temperature distribution over the surface of the EHE. The electric strength and conductivity tests showed the efficiency of the sprayed EHEs up to a temperature of 200°C. The results of analysis of the causes of material losses during MPS of electric heating tracks (TiO2) are presented, and the optimal parameters for efficient MPS of coatings in the form of narrow tracks on steel substrates are determined. Using regression analyses, the equation for the influence of MPS parameters on the coating transfer efficiency (CTE) is obtained. Process parameters such as the electric current and the plasma-forming gas flow rate have been found to have the greatest influence on the CTE. In the experiment, a high efficiency of the sprayed material during MPS of electric heating tracks of TiO2 powder was established (the maximum CTE reached 89%), which indicates the prospects for using MPS technology in the production of EHEs for DC electric heating and for maintaining the temperature of product surfaces up to 200°C.

show abstract

Section: Materials and Research Methodsmentioning

confidence: 90%

Section: Materials and Research Methodsmentioning

confidence: 99%

Microplasma-sprayed multilayer coatings for electric heating elements

Kaliuzhnyi

Alontseva

Voinarovych

et al. 2022

Materials Science-Poland

View full text Add to dashboard Cite

show abstract

“…First, the coating experiments for MPS of wire materials such as unalloyed zirconium [17,84,92] and pure titanium [14,15], as well as synthesized HA powder [15,79], were accomplished in a two-level fractional factorial design (2 4−1 ). The following parameters were chosen as variable parameters: current (I, A), plasma gas flow rate (Q, slpm), spraying distance (H, m), and wire or powder flow rate (V w , m/s or V pow , g/min).…”

Section: Thermal Plasma Spraying Of Metal-ceramic Coatingsmentioning

confidence: 99%

“…The value of these studies is mainly in obtaining and analyzing data on the characteristics of coatings from biocompatible materials and in applying one research methodology for all materials, which makes it possible to obtain and compare experimental data. MPS parameters and SEM images of zirconium coatings and splats are given in papers [17,84,92]; porosity measurement results for titanium and hydroxyapatite coatings, including SEM images of coatings and particles, are given in papers [14,15]. The regression analysis (the linear model) of the dependency of porosity (%) versus process parameters can be obtained as the regression Equation (1):…”

Section: Thermal Plasma Spraying Of Metal-ceramic Coatingsmentioning

confidence: 99%

“…It has also been found that those MPS parameters that lead to the formation of the third group of coatings ensure the maximum use of sprayed materials, namely, the maximum coating transfer efficiency (CTE), that is, the ratio of the mass of the sprayed coating to the mass of the sprayed material [16,92].…”

Section: Thermal Plasma Spraying Of Metal-ceramic Coatingsmentioning

confidence: 99%

See 1 more Smart Citation

A Brief Review of Current Trends in the Additive Manufacturing of Orthopedic Implants with Thermal Plasma-Sprayed Coatings to Improve the Implant Surface Biocompatibility

et al. 2023

View full text Add to dashboard Cite

The demand for orthopedic implants is increasing, driven by a rising number of young patients seeking an active lifestyle post-surgery. This has led to changes in manufacturing requirements. Joint arthroplasty operations are on the rise globally, and recovery times are being reduced by customized endoprostheses that promote better integration. Implants are primarily made from metals and ceramics such as titanium, hydroxyapatite, zirconium, and tantalum. Manufacturing processes, including additive manufacturing and thermal plasma spraying, continue to evolve. These advancements enable the production of tailored porous implants with uniform surface coatings. Coatings made of biocompatible materials are crucial to prevent degradation and enhance biocompatibility, and their composition, porosity, and roughness are actively explored through biocompatibility testing. This review article focuses on the additive manufacturing of orthopedic implants and thermal plasma spraying of biocompatible coatings, discussing their challenges and benefits based on the authors’ experience with selective laser melting and microplasma spraying of metal-ceramic coatings.

show abstract

Effect of microplasma spraying parameters on the loss of sprayed Zr wire and coating porosity

Cited by 2 publications

References 5 publications

Microplasma-sprayed multilayer coatings for electric heating elements

Microplasma-sprayed multilayer coatings for electric heating elements

A Brief Review of Current Trends in the Additive Manufacturing of Orthopedic Implants with Thermal Plasma-Sprayed Coatings to Improve the Implant Surface Biocompatibility

Contact Info

Product

Resources

About