Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Thermal conductivity in suspension sprayed thermal barrier coatings: Modelling and experiments
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0003-1897-0171
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0002-4087-6467
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0002-2857-0975
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. (PTW)ORCID iD: 0000-0001-7787-5444
2016 (English)In: Proceedings of the International Thermal Spray Conference, Vol. 1, p. 368-374Article in journal (Refereed) Published
Abstract [en]

Axial Suspension Plasma spraying (ASPS) can generate microstructures with higher porosity and pores in the size range from submicron to nanometre. ASPS Thermal Barrier Coatings (TBCs) have already shown a great potential to produce low thermal conductivity coatings for gas turbine applications. It is important to understand the fundamental relationship between microstructural defects in the coating such as grain boundaries, porosity etc. and thermal conductivity. Object Oriented Finite element analysis (OOF) has been shown to be an effective tool for evaluating thermal conductivity for conventional TBCs as this method is capable of incorporating the inherent microstructure as an input to the model. The objective of this work was to analyse the thermal conductivity of ASPS TBCs using experimental techniques and also to evaluate a procedure where OOF can be used to predict and analyse the thermal conductivity for these coatings. Verification of the model was done using experimental thermal conductivity. Results showed that the varied scaled porosity has a significant influence on the thermal conductivity. Smaller grains, higher overall porosity content and lower columnar density resulted in lower thermal conductivity. It was shown that OOF could be a powerful tool to predict and rank thermal conductivity of ASPS TBCs.

Place, publisher, year, edition, pages
ASM International, 2016. Vol. 1, p. 368-374
Keywords [en]
Coatings; Finite element method; Gas turbines; Grain boundaries; Microstructure; Plasma spraying; Porosity; Sprayed coatings; Thermal barrier coatings; Thermal conductivity of gases, Experimental techniques; Gas turbine applications; Low thermal conductivity; Microstructural defects; Modelling and experiments; Object-oriented finite elements; Suspension plasma spraying; Thermal barrier coating (TBCs), Thermal conductivity
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-11921Scopus ID: 2-s2.0-85034765075OAI: oai:DiVA.org:hv-11921DiVA, id: diva2:1165669
Conference
Conference of International Thermal Spray Conference and Exposition, ITSC 2016 ; 10 May 2016 Through 12 May 2016
Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2017-12-18Bibliographically approved

Open Access in DiVA

No full text in DiVA

Scopus

Authority records BETA

Ganvir, AshishKumara, ChamaraGupta, Mohit KumarNylén, Per

Search in DiVA

By author/editor
Ganvir, AshishKumara, ChamaraGupta, Mohit KumarNylén, Per
By organisation
Division of Subtractive and Additive Manufacturing
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 57 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf