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Sökning: WFRF:(Trelles Juan Pablo)

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1.
  • Chazelas, Christophe, et al. (författare)
  • Main issues for a fully predictive plasma spray torch model and numerical considerations
  • 2017
  • Ingår i: Plasma chemistry and plasma processing. - : Springer Science and Business Media LLC. - 0272-4324 .- 1572-8986. ; 37:3, s. 627-651
  • Tidskriftsartikel (refereegranskat)abstract
    • Plasma spray is one of the most versatile and established techniques for the deposition of thick coatings that provide functional surfaces to protect or improve the performance of the substrate material. However, a greater understanding of plasma spray torch operation will result in improved control of process and coating properties and in the development of novel plasma spray processes and applications. The operation of plasma torches is controlled by coupled dynamic, thermal, chemical, electromagnetic, and acoustic phenomena that take place at different time and space scales. Computational modeling makes it possible to gain important insight into torch characteristics that are not practically accessible to experimental observations, such as the dynamics of the arc inside the plasma torch. This article describes the current main issues in carrying out plasma spray torch numerical simulations at a high level of fidelity. These issues encompass the use of non-chemical and non-thermodynamic equilibrium models, incorporation of electrodes with sheath models in the computational domain, and resolution of rapid transient events, including the so-called arc reattachment process. Practical considerations regarding model implementation are also discussed, particularly the need for the model to naturally reproduce the observed torch operation modes in terms of voltage and pressure fluctuations.
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2.
  • Vardelle, Armelle, et al. (författare)
  • Erratum to The 2016 Thermal Spray Roadmap
  • 2017
  • Ingår i: Journal of thermal spray technology (Print). - : Springer Science and Business Media LLC. - 1059-9630 .- 1544-1016. ; 26:5, s. 985-986
  • Tidskriftsartikel (refereegranskat)
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3.
  • Vardelle, Armelle, et al. (författare)
  • The 2016 Thermal Spray Roadmap
  • 2016
  • Ingår i: Journal of thermal spray technology (Print). - : Springer Science and Business Media LLC. - 1059-9630 .- 1544-1016. ; 25:8, s. 1376-1440
  • Tidskriftsartikel (refereegranskat)abstract
    • Considerable progress has been made over the last decades in thermal spray technologies, practices and applications. However, like other technologies, they have to continuously evolve to meet new problems and market requirements. This article aims to identify the current challenges limiting the evolution of these technologies and to propose research directions and priorities to meet these challenges. It was prepared on the basis of a collection of short articles written by experts in thermal spray who were asked to present a snapshot of the current state of their specific field, give their views on current challenges faced by the field and provide some guidance as to the R&D required to meet these challenges. The article is divided in three sections that deal with the emerging thermal spray processes, coating properties and function, and biomedical, electronic, aerospace and energy generation applications. © 2016, ASM International.
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  • Resultat 1-3 av 3

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