Login | Register

An experimental approach to measure the temperature of in-flight particles in suspension plasma spraying

Title:

An experimental approach to measure the temperature of in-flight particles in suspension plasma spraying

Aziz, Bishoy (2016) An experimental approach to measure the temperature of in-flight particles in suspension plasma spraying. Masters thesis, Concordia University.

[img]
Preview
Text (application/pdf)
Thesis Manuscript -Final Submission.pdf
3MB

Abstract

Abstract
An experimental approach to measure the temperature of in-flight particles in suspension plasma spraying
Bishoy Aziz
The temperature of in-flight particles in suspension plasma spraying (SPS) is one of the key parameters affecting the coating microstructure. Temperature measurement has been carried out before for in-flight particles in air plasma spray (APS) and other thermal spraying processes. Suspension plasma spray (SPS) is an emerging coating deposition technology that permits the deposition of nanostructured coatings with unique structural characteristics. The particles size in SPS is smaller than the one that is commonly used is APS and other spray processes leading to specific challenges for determining its temperature.
The aim of this work is to assess the feasibility of two-color pyrometer for in-flight particles in suspension plasma spraying. To do so, spectroscopic analysis in the visible to near infrared range was carried out on the jet stream when suspension of 20 wt. % YSZ particles in pure ethanol was sprayed. The analysis takes into account the radiation scattered by the particles (Mie scattering) as well as the radiation directly detected from the plasma in the jet stream, and it was found that the effect of the scattered radiation by the particles on temperature measurement is negligible along the center axis of spraying at the melting point of Zirconia.
Moreover, the main and dominant source of error on temperature measurement is the plasma radiation, the vapors and the free electrons in the background of the continuum. One the other hand, it was found that going for a longer wavelength from 1 μm to 2.5 μm is not a promising wavelength range for temperature measurement. Finally, the measurements carried out in this thesis favors future development for the current configuration of a commercial diagnostic sensor to have a better
iv
precision for the value of temperature measurement, as it was found that the error because of the current configuration can reach 540 ° C degrees.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Mechanical and Industrial Engineering
Item Type:Thesis (Masters)
Refereed:Yes
Authors:Aziz, Bishoy
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Mechanical Engineering
Date:1 March 2016
Thesis Supervisor(s):Moreau, Christian
ID Code:981228
Deposited By: BISHOY AZIZ
Deposited On:15 Jun 2016 19:13
Last Modified:18 Jan 2018 17:52
All items in Spectrum are protected by copyright, with all rights reserved. The use of items is governed by Spectrum's terms of access.

Repository Staff Only: item control page

Downloads per month over past year

Back to top Back to top