AE Monitoring and Analysis of HVOF Thermal Spraying Process

This work presents an in situ monitoring of HVOF thermal spraying process through an acoustic emission (AE) technique in an industrial coating chamber. Single layer thermal spraying on substrate was carried out through slits. Continuous multilayer thermal spraying onto the sample without slit was al...

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Bibliographic Details
Published inJournal of thermal spray technology Vol. 20; no. 5; pp. 1071 - 1084
Main Authors Faisal, N. H., Ahmed, R., Reuben, R. L., Allcock, B.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.09.2011
Springer
Springer Nature B.V
Subjects
Acoustic emission
Analytical Chemistry
Applied sciences
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coating
Corrosion and Coatings
Exact sciences and technology
Flame spraying
Kinetic energy
Machines
Manufacturing
Materials Science
Mathematical models
Metals. Metallurgy
Monitoring
Peer Reviewed
Processes
Production techniques
Slits
Sprayers
Spraying
Sprays
Substrates
Surface treatment
Surfaces and Interfaces
Thermal spraying
Thin Films
Tribology
multilayer spraying
particle impact
HVOF
thermal spray
acoustic emission
monitoring
non-destructive testing
HVOF spraying
Hot spraying
Multiple layer
Spray coating
Surface treatment
Acoustic emission
Non destructive test
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Summary:This work presents an in situ monitoring of HVOF thermal spraying process through an acoustic emission (AE) technique in an industrial coating chamber. Single layer thermal spraying on substrate was carried out through slits. Continuous multilayer thermal spraying onto the sample without slit was also conducted. The AE was measured using a broadband piezoelectric AE sensor positioned on the back of the substrate. A mathematical model has been developed to determine the total kinetic energy of particles impacting the substrate through slits. Results of this work demonstrate that AE associated with particle impacts can be used for in situ monitoring of coating process. Results also show that the amplitude and AE energy is related to the spray gun transverse speed and the oxy-fuel pressure. The measured AE energy was found to vary with the number of particles impacting the substrate, determined using the mathematical model.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1059-9630
1544-1016
DOI:10.1007/s11666-011-9620-6