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Relationships between Process Parameters, Microstructure and Adhesion Strength of HVOF Sprayed IN718 Coatings

Christophe Lyphout (Institutionen för material- och tillverkningsteknik) ; Per Nylén ; L. Östergren
Journal of Thermal Spray Technology (1059-9630). Vol. 20 (2010), 1-2, p. 76-82.
[Artikel, refereegranskad vetenskaplig]

Fundamental understanding of relationships between process parameters, particle in-flight characteristics and adhesion strength of HVOF sprayed coatings is important to achieve the high coating adhesion that is needed in aeronautic repair applications. In this study statistical Design of Experiments (DoE) was utilized to identify the most important process parameters that influence adhesion strength of IN718 coatings sprayed on IN718 substrates. Special attention was given to the parameters combustion ratio, total gas mass flow, spray distance and external cooling, since these parameters were assumed to have a significant influence on particle temperature and velocity. Relationships between these parameters and coating microstructure were evaluated to fundamentally understand the relationships between process parameters and adhesion strength.



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Denna post skapades 2011-05-11. Senast ändrad 2014-10-30.
CPL Pubid: 140558

 

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Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik (2005-2017)

Ämnesområden

Materialvetenskap
Produktion
Materialteknik

Chalmers infrastruktur

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Denna publikation ingår i:


Adhesion strength of HVOF sprayed Inconel 718 coatings