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Relationship between surface topgraphy parameters and adhesion strength for plasma spraying
Högskolan Väst, Institutionen för teknik, matematik och datavetenskap, Avd för maskinteknik.
Högskolan Väst, Institutionen för teknik, matematik och datavetenskap, Avd för maskinteknik.ORCID-id: 0000-0001-7787-5444
2005 (engelsk)Inngår i: ITSC 2005: Thermal Spray connects: Explore its surfacing potential!, The Material Information Society , 2005, s. 1027-1031Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

To achieve sufficient adhesion strength within thermal spraying, the surface to be coated has to be modified. Grit blasting is the most common way to generate a clean and roughened surface. The bonding mechanism between the grit-blasted substrate and the coating is assumed to be due to mechanical anchoring, why an optimal surface roughness is essential. The surface roughness is usually evaluated using Ra which cannot fully characterize the complex nature of the chaotic substrate topography. This study was performed in order to evaluate if Ra can be replaced by other surface characteristic parameters such us R.q, Rpk, Rpv, Rk…with higher correlation to adhesion strength. Average roughness was measured by a perthometer and with white light interferometry to get 3D images of the surface topography. Disc shaped substrate samples of Ti6Al4V (AMS 4928) were grit blasted with aluminium oxide grit and plasma sprayed with a Ni5%Al coating. Adhesion strength was determined according to the ASTM C633 standard. The correlation between a number of different surface-parameters and adhesion strength were evaluated and compared with Ra.

sted, utgiver, år, opplag, sider
The Material Information Society , 2005. s. 1027-1031
HSV kategori
Forskningsprogram
Teknik, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-141OAI: oai:DiVA.org:hv-141DiVA, id: diva2:211926
Tilgjengelig fra: 2009-04-20 Laget: 2009-04-20 Sist oppdatert: 2015-03-17bibliografisk kontrollert
Inngår i avhandling
1. A study of the adhesion strength of plasma sprayed coatings
Åpne denne publikasjonen i ny fane eller vindu >>A study of the adhesion strength of plasma sprayed coatings
2007 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Göteborg: Chalmers University of Technology, 2007. s. 40
Serie
Doktorsavhandlingar vid Chalmers tekniska högskola, ISSN 0346-718X ; 2637
Emneord
Grit blasting, Thermal spraying, Coating, Surface pre-treatment, Surface roughness, Fractal analysis, Adhesion strength, Mechanical anchoring, Protal® process, Splat
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
urn:nbn:se:hv:diva-163 (URN)
Disputas
(engelsk)
Merknad
Delad utgivning: Trollhättan : Department of Technology, Mathematics and Computer Science, University WestTilgjengelig fra: 2009-04-21 Laget: 2009-04-21 Sist oppdatert: 2010-01-08bibliografisk kontrollert

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