Optimal experiment design for plasma thermal spray parameters at bending loads Online publication date: Fri, 11-May-2012
by M. Azadi; A. Moridi; G.H. Farrahi
International Journal of Surface Science and Engineering (IJSURFSE), Vol. 6, No. 1/2, 2012
Abstract: Ceramic thermal barrier coatings are applied on gas turbines and diesel engine components to protect metals from heat and this enhances the service lifetime by means of a reduction in working temperature. In the present paper, optimisation of plasma thermal spray parameters, including feed rate and nozzle distance from the specimen surface is performed by using the design of experiment method. Due to factorial approach, by considering two parameters with three variation levels, nine experiments of bending test are needed. The base material is cast aluminium alloy, A356.0-T7. The coating layers consist of a bond coat, Ni-Cr-Al-Y with a thickness of 150 µm and a top coat, ZrO2-8wt%Y2O3 with a thickness of 350 µm. The results of sensitivity analysis show that target functions including maximum bending force, stress and deflection of specimens are optimised at a feed rate of 30 gr/min and nozzle distance of 80 mm.
Online publication date: Fri, 11-May-2012
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Surface Science and Engineering (IJSURFSE):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email email@example.com