University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Measuring the adhesion of alumina coatings onto Fecralloy supports using a mechanical testing system

Adegbite, SA (2012) Measuring the adhesion of alumina coatings onto Fecralloy supports using a mechanical testing system Applied Surface Science, 259. pp. 338-342.

Full text not available from this repository.

Abstract

Tightening legislation for vehicles across the world has caused the use of monolith catalysts in automotive emission control to become ubiquitous. Control of the surface adhesion of the platinum group metal (PGM) coating onto the monolith block, to maximise catalytic performance for a minimum PGM loading, is therefore paramount. In this paper, an automatic film application is used for coating γ-alumina slurries onto Fecralloy ®, an integral component of metallic monolith catalysts, to achieve the desired coating properties. A newly devised dual compression-tension technique using a mechanical testing system (MTS) is used for measuring the coating adhesion. This method involves compression of the coating with a probe at a fixed load, and then removing the probe together with the coating at right angles to the substrate surface at a speed of 10 mm/min. The MTS results are compared with those from conventional ultrasonic vibration tests. It is found that at 40 wt% solids concentration, the coatings of the finest particles (d 0.9 of 12.14 μm) showed the best adhesion with an ultimate strength of 0.59 MPa and 85-90 mass% coating removal. © 2012 Elsevier B.V.

Item Type: Article
Authors :
NameEmailORCID
Adegbite, SAs.adegbite@surrey.ac.ukUNSPECIFIED
Date : 15 October 2012
Identification Number : https://doi.org/10.1016/j.apsusc.2012.07.046
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:35
Last Modified : 17 May 2017 15:04
URI: http://epubs.surrey.ac.uk/id/eprint/835919

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800