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Adhesion and residual stress characterization of HVOF sprayed inconel 718 coatings
University West, Department of Engineering Science, Division of Production Engineering. (PTW)
2008 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Göteborg: Chalmers , 2008. , 76 p.
Series
Technical report / Department of Materials and Manufacturing Technology, Chalmers University of Technology, ISSN 1652-8891 ; 38
Keyword [en]
Thermal spray, HVOF, Inconel718, adhesion strength, residual stress, finite element method
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-1821OAI: oai:DiVA.org:hv-1821DiVA: diva2:249030
Public defence
(English)
Available from: 2010-03-03 Created: 2009-10-09 Last updated: 2016-02-11Bibliographically approved
List of papers
1. Characterization of adhesion strenght of HVOF sprayed IN718 coatings
Open this publication in new window or tab >>Characterization of adhesion strenght of HVOF sprayed IN718 coatings
2009 (English)In: Proceedings of th 22nd Internationa Conference on Surface Modification technolgies - SMT22. Trollhättan, Sweden / [ed] T.S. Sudarshan & Per Nylen, VALAR Docs , 2009, 11-18 p.Conference paper, (Refereed)
Abstract [en]

The tensile adhesion strength of thermally sprayed coating is conventionally evaluated via the ASTM C633-69 standard. The maximum measurable adhesion is then limited by the adhesion strength of the polymer media. High velocity oxy-fuel (HVOF) spraying can exhibit very high bonding strength and thus it is essential to develop an alternative method to evaluate coating adhesion strength. In this work a Modified Tensile Adhesion Test (MTAT) is proposed replacing gluing with induction brazing. The method was evaluated for HVOF sprayed Inconel 718 coatings deposited on Inconel 718 substrates. The effect of induction brazing process and the characteristics of the braze-coating interface was given particular interest. The results indicate that the method is superior to the ASTM C633-69 for characterisation of adhesion of coatings with high bond strength.

Place, publisher, year, edition, pages
VALAR Docs, 2009
Keyword
Thermal Spraying Process, Coating Adhesion Strength, HVOF, Inconel 718, Tensile Adhesion Test, ASTM C633-69, Induction Brazing, Bonding Mechanisms, Coating Thickness, Braze Joint Strength.
National Category
Production Engineering, Human Work Science and Ergonomics Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-1728 (URN)978-0-9817065-1-1 (ISBN)
Conference
SMT22. Trollhättan, Sweden September 22-24 2008
Available from: 2009-10-01 Created: 2009-10-01 Last updated: 2016-02-12Bibliographically approved
2. Residual stresses distribution through thick HVOF sprayed inconel 718 coatings
Open this publication in new window or tab >>Residual stresses distribution through thick HVOF sprayed inconel 718 coatings
2008 (English)In: Journal of thermal spray technology (Print), ISSN 1059-9630, E-ISSN 1544-1016, Vol. 17, no 5-6, 915-923 p.Article in journal (Refereed) Published
Keyword
FEM simulation analysis; HVOF, Inconel718, MLRM, Neutron diffraction, Residual stress, Thick coating
National Category
Production Engineering, Human Work Science and Ergonomics Other Materials Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-1519 (URN)10.1007/s11666-008-9242-9 (DOI)
Note

http://dx.doi.org/10.1007/s11666-008-9289-7 Erratum

Available from: 2009-05-11 Created: 2009-05-11 Last updated: 2016-02-11Bibliographically approved
3. Characterization of adhesion strenght and residual stresses of HVOF sprayed Inconel 718 for aerospace repair applications
Open this publication in new window or tab >>Characterization of adhesion strenght and residual stresses of HVOF sprayed Inconel 718 for aerospace repair applications
2007 (English)In: Thermal Spray 2007: Global Coating Solutions: Proceedings of the International Thermal Spray Conference, Springer , 2007, 588-593 p.Conference paper, (Other academic)
Place, publisher, year, edition, pages
Springer, 2007
Keyword
Coatings, Residual stresses, HVOF, Inconel718
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
urn:nbn:se:hv:diva-1724 (URN)9780387772851 (ISBN)
Conference
ITSC 2007, Beijing, China, May 14-16, 2007
Available from: 2009-09-30 Created: 2009-09-30 Last updated: 2016-02-12Bibliographically approved

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