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in-flight particle analysis

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Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 149-155, May 8–11, 2000,
... was done to investigate the importance of such spray parameters as gun current, auxiliary gas flow, and powder carrier gas flow. In-flight particle diameters, temperatures, and velocities were measured in various areas of the spray plume. Samples were produced for analysis of microstructures and properties...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 447-453, May 24–28, 2021,
... coatings made from ordinary Ni/Al powders. In-flight particle temperatures were also measured and found to be higher than 2300 °C. The low oxygen content in the coatings is attributed to the in-situ deoxidizing effect of ultrahigh temperature droplets which are also oxide-free. diamond powder...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 599-605, September 15–18, 1997,
... of NiCrAlY and partially stabilized zirconia (PSZ). In flight particle temperature, velocity and trajectory data were gathered for individual powders, as well as mixtures of the particle species, over a range of spray parameters. This data was combined with material specific properties such as flowability...
Proceedings Papers

ITSC1996, Thermal Spray 1996: Proceedings from the National Thermal Spray Conference, 231-237, October 7–11, 1996,
...Abstract Abstract A heat transfer analysis has been undertaken to predict the influence of process parameters on the decomposition of in-flight particles and deposited layers during thermal spraying of polymer coatings. The theoretical analysis shows that polymers are unique in developing large...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 187-193, May 8–11, 2000,
...Abstract Abstract This paper presents a mathematical model of the in-flight oxidation of spherical particles during thermal spray deposition process. The model includes analysis of the mechanical and thermal behavior of the powder particles. The former accounts for acceleration and deceleration...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 783-789, May 8–11, 2000,
.... That was explained by the analysis of the composite Fauchais, J. Vac. Sci. Technol., A3, (6), 2483 - 2489, (1985) stainless steel/alumina particles collected during their flight in the plasma. The alumina of the composite particle shell [11] H.L. de Villiers Lovelock, J. Thermal. Spray. has been entrained...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1179-1186, May 25–29, 1998,
... with work in the 3 previously mentioned fields, which resulted in a whole 3-fold study of the process. Oxidation was studied using electron microprobe analysis of elementary particles quenched and trapped into a closed box at various given flight distances. Oxygen diffusion phenomena within the particles...
Proceedings Papers

ITSC1997, Thermal Spray 1997: Proceedings from the United Thermal Spray Conference, 577-582, September 15–18, 1997,
... parameters and electrode wear states. The coating process and in-flight particles were monitored using a fast non-intensified CCD-camera. Using digital image analysis the relative hot particle concentrations and velocity distributions were calculated from images. The possibility to use a CCD camera based...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 91-98, May 8–11, 2000,
... propellants to explore this novel concept. The prototype test-facility equipment was limited to single-shot mode. Examination of the coatings formed, and conceptual analysis by analogy to conventional technologies was used to assess the capabilities and limitations of the hybrid process. Impressive in-flight...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 19-24, May 25–29, 1998,
... by simple flamespraying. They have been investigated by optical metallography, FT-IR analysis and DSC-analysis. Among the coating properties also the "in-flight" particles have been studied by wipe-tests and FT-IR analysis in order to assess possible decomposition effects during spraying. flame...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 499-507, May 24–28, 2021,
... cascaded torches that can be configured with different numbers of neutrodes and commercially available Al2O3 powders. The powders were sprayed at different gas flow rates and current intensities while monitoring voltage fluctuations as well as in-flight particle temperature and velocity. The resulting...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 1161-1165, May 25–29, 1998,
... in terms of the calculated thermodynamic In this present work, in-flight carbonization of equilibria. MoSi2 powder particles in an Ar-H2-CH4 induction plasma was investigated, where the methane was used as the powder particles carrier gas. The purpose of this study is to further understand the interaction...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 44-50, May 24–28, 2021,
... and the corresponding predictive models were compared. The time series aspect of the data will be examined. atmospheric plasma spraying in-flight particle analysis predictive modeling torch electrode wear Thermal Spray 2021: Proceedings from the International Thermal Spray Conference Copyright © 2021 ASM...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 664-675, May 24–28, 2021,
... and position measurements with respect to time. This approach is demonstrated and the results discussed. digital imaging in-flight particle analysis thermal spray coating Thermal Spray 2021: Proceedings from the International Thermal Spray Conference Copyright © 2021 ASM International® May 24 28...
Proceedings Papers

ITSC2000, Thermal Spray 2000: Proceedings from the International Thermal Spray Conference, 501-508, May 8–11, 2000,
... content of free oxygen in the jet; Gun". Proceedings of the International Thermal Spray Conference 1992, p. 805-810. partially or fiilly melted particles may loose melted material in-flight through the shearing gas forces. This can 161 W.L. Oberkampf, M. Talpallikar: "Analysis of a High Velocity form...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 873-878, March 4–6, 2002,
... through two steps: oxidation during which yielded different oxide contents. The significant particle in-flight period and that at the period after influence of particle size on the oxidization of spray droplet impacts on substrate (or previously deposited materials was evidently revealed through the splat...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 954-959, March 4–6, 2002,
...Abstract Abstract When using double-wire arc spraying, strong dependencies between the process parameters and the layer characteristics can usually be determined. The aim of this article is to investigate the behavior of steel particles during flight depending on the input parameters...
Proceedings Papers

ITSC 2002, Thermal Spray 2002: Proceedings from the International Thermal Spray Conference, 453-458, March 4–6, 2002,
... particle behavior analysis selected in order to obtain: 3.1 In-flight particle characteristic diagnostic The particle characteristics (i.e., temperature, velocity equivalent argon / hydrogen flow rate ratios for and diameter) at the spraying distance were meas- different argon + hydrogen flow rates; ured...
Proceedings Papers

ITSC1998, Thermal Spray 1998: Proceedings from the International Thermal Spray Conference, 517-522, May 25–29, 1998,
... of polymethylmethacrylate (PMMA), a unity and an activation energy of 135 kJ mol". The heat transfer analysis to determine the temperature polymer decomposition temperature is shown to be a profiles within particles and an investigation of the in- function ofthe particle residence time in the flame and flight behaviour...
Proceedings Papers

ITSC 2021, Thermal Spray 2021: Proceedings from the International Thermal Spray Conference, 700-707, May 24–28, 2021,
... the particles are in flight, which gives the aluminum in the particle enough time to oxidize. Also, as the amount of N2 pressure decreases, the particle becomes less protected against the oxidizing environment. To study how coating parameters affect the metallic lattice, a Rietveld19 analysis was performed...