The effects of plasma characteristics on the melting time at the front surface of a film on a substrate: An exact solution

A close-form solution to predict the total melting time of an ablating slab in contact with a plasma

“…Taking the solid-liquid phase change, plasma parameters and temperature-independent thermophysical properties of the slab were developed to predict the total melting time of the ablating slab. The major assumptions made are as follows [9][10][11]23]: 1. The model is one-dimensional due to thin thickness of the region considered.…”

“…Heat transport in the workpiece is determined by the plasma energy transfer, which is controlled by the parameters such as the ion charge number, mass and temperature ratios of the ions and electrons generated in the presheath, and properties of the wall, etc. [10,11]. Yeh and Wei [9] systematically and analytically investigated the plasma energy flux, including ion and electron energy fluxes, and transport to a negatively biased surface in contact with a plasma.…”

“…Energy released from the recombination of ions and electrons on the surface is found to play an important role on heating the workpiece. Yeh [11] studied the plasma heating of a film on a substrate by using the Laplace integral transform method to solve the one-dimensional unsteady heat conduction equations for the film and the substrate. An analytical solution is derived to calculate the melting time and heating rate of the front surface of a film on the substrate with negative bias voltage.…”

Numerical and Experimental Investigation of Two-Phase Plasma Jet during Deposition of Coatings

“…Such techniques are expensive and complicate for use in industry. Numerical investigations of plasma spray process generally is focused on investigation of heat transfer between plasma jet and surface [Garbero et al, 2006], substrate temperature influence on coatings morphology, adhesion, chemical processes between substrate material and deposited material [Yeh, 2006, Kersten et al, 2001]. I n t h i s p a p e r , b y m e a n s o f J e t s & P o u d r e s software [Delluc et al, 2003], a numerical simulation of interaction of plasma jet and dispersed particles was investigated.…”

Measurement and numerical simulation of two-phase plasma flow in plasma spray process

“…Those techniques are expensive and complicated to use in industry. Numerical investigations of plasma spray process generally are focussed on investigation of heat transfer between plasma jet and surface [3], substrate temperature influence on coatings' morphology, adhesion, chemical processes between substrate material and deposited material [4,5]. In this paper, by means of "Jets&Poudres" software [6], a numerical simulation of interaction of plasma jet and dispersed particles was investigated.…”