Researches on the Improvement of the Bioactivity of TiO<sub>2</sub> Deposits, Obtained by Magnetron Sputtering - DC

Toma, Bogdan Florin; Baciu, Raluca-Elena; Bejinariu, Costică; Cimpoieşu, N; Ciuntu, Bogdan Mihnea; Toma, Ştefan Lucian; Burduhos-Nergis, Diana-Petronela; Timofte, Daniel

doi:10.1088/1757-899x/374/1/012017

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…One of the most cost-effective methods of coating surfaces by thermal spraying is that of electric arc spraying, because the costs of purchasing and operating such equipment can be quickly amortized, due to the high productivity and versatility of the materials that can be thus sprayed [1][2][3]. The electric arc deposition process is based on the formation of an electric arc between the two consumable wires directed through the pistol head, on the atomization of the molten material by means of a carrier gas pressured jet and the acceleration of the particles thus produced towards the substrate surface [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

2022

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The physical and mechanical properties of the coatings produced by electric arc thermal spraying are closely related to the velocity and temperature of the particles that interact with the substrate surface. Knowing the temperature variation of the sprayed particles allows establishing their aggregation state, respectively determining the spraying distance, so that the state of aggregation of the particles at the impact moment is predominantly liquid. Obviously, when the sprayed particle passes through the spray cone, it cools continuously due to the low and variable temperature of the entrainment gas. This paper aims to determine analytically the thermal behavior of the particles entrained by the gas jet formed at the thermal spraying in an electric arc, depending on the variable temperature, existing along the spraying cone. In this sense, by modeling with finite elements, using the ANSYS program, the temperature inside the spray jet was determined, and by a mathematical model carried out based on the thermal balance equations, the thermal profile of the sprayed particles was determined. The thermal profile demonstrates that their temperature suddenly increases to the solidification temperature, then increases to the melting temperature—due to the latent heat of solidification, after which it decreases to 300 K.

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Section: Introductionmentioning

confidence: 99%

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

2022

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“…There is a multitude of technological processes that allow the modification of the physico-chemical and mechanical properties of the surfaces in order to increase the performance in operation, the service life, or the esthetic aspect, [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Hard Alloys with High Content of WC and TiC—Deposited by Arc Spraying Process

Toma¹,

Haraga²,

Chicet³

et al. 2021

Welding - Modern Topics

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Obtained by different spraying technologies: in atmospheric plasma spray, High Velocity Oxygen Fuel (HVOF) or laser cladding, the layers of hard alloys with a high content of WC and TiC find their industrial applications due to their high hardness and resistance to wear. Recognized as being a process associated with welding, the arc spraying process is a method applied industrially both in obtaining new surfaces and for reconditioning worn ones. This chapter presents the technology for obtaining ultra-hard layers based on WC and TiC - by the arc spraying process, using a classic spray device equipped with a conical nozzle system and tubular wire additional material containing ultra-hard compounds (WC, TiC). To study both the quality of deposits and the influence of thermal spray process parameters on the properties of deposits with WC and TiC content, we approached various investigative techniques, such as optical scanning microscopy (SEM), X-ray diffraction, and determination of adhesion, porosity, Vickers micro-hardness and wear resistance.

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Nano-scale Surface Modification of Dental Implants: Fabrication

Olmo

Czerwiński

Santos-Coquillat

et al. 2023

Surface Modification of Titanium Dental Implants

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Researches on the Improvement of the Bioactivity of TiO₂ Deposits, Obtained by Magnetron Sputtering - DC

Cited by 4 publications

References 17 publications

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

Hard Alloys with High Content of WC and TiC—Deposited by Arc Spraying Process

Nano-scale Surface Modification of Dental Implants: Fabrication

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Researches on the Improvement of the Bioactivity of TiO2 Deposits, Obtained by Magnetron Sputtering - DC

Cited by 4 publications

References 17 publications

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

Numerical Calculation of the Arc-Sprayed Particles’ Temperature in Transient Thermal Field

Hard Alloys with High Content of WC and TiC—Deposited by Arc Spraying Process

Nano-scale Surface Modification of Dental Implants: Fabrication

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Product

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Researches on the Improvement of the Bioactivity of TiO₂ Deposits, Obtained by Magnetron Sputtering - DC