Thermal parameters for centrifugal induction sintering of powder coatings

Gafo, Yu. N.; Сосновский, И. А.

doi:10.1007/s11106-009-9087-x

Cited by 4 publications

(3 citation statements)

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“…Its applications involve laser-induction hybrid cladding of Ni based alloy [30], induction melting of Co based coating [31] and induction sintering of powder coatings [32]. Particularly, induction melting has received attention to prepare in situ metal matrix composite coatings on steel substrate.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

In-situ synthesis of TiC/Ti composite coating by high frequency induction cladding

Yu¹,

Zhang²,

Wang³

et al. 2017

Journal of Alloys and Compounds

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Section: Accepted Manuscriptmentioning

confidence: 99%

In-situ synthesis of TiC/Ti composite coating by high frequency induction cladding

Yu¹,

Zhang²,

Wang³

et al. 2017

Journal of Alloys and Compounds

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“…Pavan [5] shows that when pouring an aluminum bronze melt into the inner cavity of a steel billet rotating around its own axis, a uniform distribution of the melt around the perimeter is achieved, and the resulting coating has satisfactory tribotechnical properties. Gafo & Sosnovskii [6,7] provide data on the process modeling of applying bimetallic coatings based on powder materials by centrifugal surfacing technology combined with induction heating. According to these data, the use of induction heating by high-frequency currents ensures uniform heating of the sleeve, while the temperature difference on the inner and outer sides of the sleeve does not exceed 11 • C. Sosnovskii [8] provides data on the modification of a CuSn (10%) P (1%) coating on a steel sleeve with ultrafine boehmite particles, according to which the alloy reinforcement ensures an increase in both the tribological properties and the coating hardness.…”

Section: Introductionmentioning

confidence: 99%

Creation of AlSi12 Alloy Coating by Centrifugal Induction Surfacing with the Addition of Low-Melting Metals

et al. 2021

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This paper investigates the structure and mechanical characteristics of a coating based on an AlSi12 alloy, obtained by centrifugal induction surfacing as an alternative to a bronze sliding bearing. To provide for the adhesion of an aluminum layer to the inner surface of a steel bearing housing, a sublayer of low-melting metals was formed, while the formation of the main layer and the sublayer was done in a single processing cycle. The low-melting metals had higher density, which ensured that the sublayer was created at the interface with the steel bearing housing under the action of centrifugal forces. It is shown that the low-melting sublayer forms a strong bond both with the aluminum alloy and with the steel base. Lead and tin are used as low-melting additives. It has been established that lead or tin used in a sublayer are indirectly involved in the structural formation of boundary layers of steel and aluminum claddings, acting as a medium for diffuse mass transfer. Thus, lead is not included in the composition of the main coating and does not change the chemical composition of the aluminum layer. After the addition of tin, the aluminum develops a dendritic structure, with tin captured in the interdendritic space. In this case, the deposited layer is saturated with iron with the formation of intermetallic (Fe, Al, Si) compounds, both at the interface and in the coating volume. This paper offers an explanation of the mechanism through which Pb and Sn act on the structure formation of the coating, and on the boundary layer of the steel bearing housing. Tribological tests have shown that the resulting materials are a promising option for plain bearings and highly competitive with the CuSn10P bronze.

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“…The resulting field induces an electromotive force which, in turn, results in the rise of the heated element's eddy currents. Then, according to Joule's law, electric field energy present in the heated element is converted into thermal energy [4,5].…”

Section: Introductionmentioning

confidence: 99%

Influence of Eccentric Arrangement of the Die for the Temperature Distribution in the Sample during the Pressure-Assisted Induction Sintering (PAIS)

Siemiaszko

Szykut

2014

KEM

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In this work, the pressure-assisted induction sintering (PAIS) method, is being presented. The specimens (a cylindrical shape, diameter of 50 mm, height of 10 mm) was heated by a induction coil with heating speed of about 220 K/s to temperature 800°C, 850oC, 900oC, 950oC and 1000oC. During this process, the temperature of specimen was measured by five thermocouples (Φ 0.5 mm) which were located into graphite punch with sampling frequency of 2 Hz. Firstly, the die with specimen was located in the center of the coil. Next, the die was located out of the coil center (1 and 2 cm in four directions) and heated again. The analyzed samples show a difference of heat flow in the specimens. The studies also showed the difference between the temperature at the surface of the matrix (measured by a pyrometer) and the temperature of the sample (measured by a thermocouples). Two types of thermocouples placement were tested, parallel and perpendicular to the door of the vacuum chamber. In addition, an analysis of the temperature distribution along the diameter of the sample was performed.

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Thermal parameters for centrifugal induction sintering of powder coatings

Cited by 4 publications

References 1 publication

In-situ synthesis of TiC/Ti composite coating by high frequency induction cladding

In-situ synthesis of TiC/Ti composite coating by high frequency induction cladding

Creation of AlSi12 Alloy Coating by Centrifugal Induction Surfacing with the Addition of Low-Melting Metals

Influence of Eccentric Arrangement of the Die for the Temperature Distribution in the Sample during the Pressure-Assisted Induction Sintering (PAIS)

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