Thermal analysis of functionally graded coating AlSi alloy and steel pistons

Functionally graded coatings are coating systems used to increase performances of high temperature components in diesel engines. These coatings consist of a transition from the metallic bond layer to cermet and from cermet to the ceramic layer. In this study, thermal behavior of functional graded co...

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Bibliographic Details
Published in:Surface & coatings technology 2008-05, Vol.202 (16), p.3856-3865
Main Author: Buyukkaya, Ekrem
Format: Article
Language:English
Subjects:
Applied sciences
Cross-disciplinary physics: materials science
rheology
Diesel engine piston
Exact sciences and technology
Finite element method (FEM)
Functionally graded coating
Materials science
Metals. Metallurgy
Physics
Production techniques
Surface treatment
Surface treatments
Thermal analysis
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Summary:Functionally graded coatings are coating systems used to increase performances of high temperature components in diesel engines. These coatings consist of a transition from the metallic bond layer to cermet and from cermet to the ceramic layer. In this study, thermal behavior of functional graded coatings on AlSi and steel piston materials was investigated by means of using a commercial code, namely ANSYS. Thermal analyses were employed to deposit metallic, cermet and ceramic powders such as NiCrAl, NiCrAl + MgZrO 3 and MgZrO 3 on the substrate. The numerical results of AlSi and steel pistons are compared with each other. It was shown that the maximum surface temperature of the functional graded coating AlSi alloy and steel pistons was increased by 28% and 17%, respectively.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2008.01.034