Fracture behavior of plasma-sprayed thermal barrier coatings with different bond coats upon cyclic thermal exposure
DC Field | Value | Language |
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dc.contributor.author | Sim, Young-Seok | - |
dc.contributor.author | Jung, Sung-Ll | - |
dc.contributor.author | Kwon, Jae-Young | - |
dc.contributor.author | Lee, Jae-Hyun | - |
dc.contributor.author | Jung, Yeon-Gil | - |
dc.contributor.author | Paik, Ungyu | - |
dc.date.accessioned | 2022-12-20T23:44:40Z | - |
dc.date.available | 2022-12-20T23:44:40Z | - |
dc.date.created | 2022-09-16 | - |
dc.date.issued | 2009-01 | - |
dc.identifier.issn | 0255-5476 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177366 | - |
dc.description.abstract | The effects of bond coat nature in thermal barrier coating (TBC) systems on the delamination or fracture behavior of the TBCs with different bond coats prepared using two different processes - air plasma spray (APS) and high velocity oxyfuel (HVOF) - were investigated by cyclic thermal fatigue tests. The TBCs with the HVOF bond coat were delaminated or fractured after 3-6 cycles, whereas those with the APS bond coat were delaminated after 10 cycles or show a sound condition. These results indicate that the TBC system with the APS bond coat has better thermal durability than the system with the HVOF bond coat under long-term cyclic thermal exposure. The hardness values of the TBCs (top coats) in both systems are dependent on applied loads, irrespective of the hardness of the bond coats and the substrate. The values are not responded to the bond coat nature or the exposure time. Thermally grown oxide (TGO) layers in both cases consist of two regions with the inner TGO layer containing only Al 2O3 and the outer TGO layer of mixed-oxide zone containing Ni, Co, Cr, Al in Al2O3 matrix. The outer TGO layer has a more irregular shape than the inner TGO layer, and there are many pores within the outer layer. At failure, the TGO thickness of the TBC system with the HVOF bond coat is 9-13 μm, depending on the total exposed time, and that of the TBC system with the APS bond coat is about 20 μm. The both TBC systems show the diffusion layer on the side of substrate in the interface between the bond coat and the substrate. The relationship between the delamination or fracture behavior and the bond coat nature has been discussed, based on the elemental analysis and microstructural evaluation. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | Trans Tech Publications Ltd | - |
dc.title | Fracture behavior of plasma-sprayed thermal barrier coatings with different bond coats upon cyclic thermal exposure | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Paik, Ungyu | - |
dc.identifier.doi | 10.4028/www.scientific.net/MSF.620-622.343 | - |
dc.identifier.scopusid | 2-s2.0-70349416741 | - |
dc.identifier.bibliographicCitation | Materials Science Forum, v.620 622, pp.343 - 346 | - |
dc.relation.isPartOf | Materials Science Forum | - |
dc.citation.title | Materials Science Forum | - |
dc.citation.volume | 620 622 | - |
dc.citation.startPage | 343 | - |
dc.citation.endPage | 346 | - |
dc.type.rims | ART | - |
dc.type.docType | Conference Paper | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | Air | - |
dc.subject.keywordPlus | Alumina | - |
dc.subject.keywordPlus | Aluminum oxide | - |
dc.subject.keywordPlus | Chromium compounds | - |
dc.subject.keywordPlus | Durability | - |
dc.subject.keywordPlus | Fatigue testing | - |
dc.subject.keywordPlus | Flame spraying | - |
dc.subject.keywordPlus | Fracture | - |
dc.subject.keywordPlus | Fracture mechanics | - |
dc.subject.keywordPlus | Hardness | - |
dc.subject.keywordPlus | HVOF thermal spraying | - |
dc.subject.keywordPlus | Nickel compounds | - |
dc.subject.keywordPlus | Plasma jets | - |
dc.subject.keywordPlus | Plasma spraying | - |
dc.subject.keywordPlus | Sprayed coatings | - |
dc.subject.keywordPlus | Thermal fatigue | - |
dc.subject.keywordPlus | Air plasma spray | - |
dc.subject.keywordPlus | Bond coats | - |
dc.subject.keywordPlus | High velocity oxy-fuel | - |
dc.subject.keywordPlus | Thermal barrier coating (TBC) | - |
dc.subject.keywordPlus | Thermal durability | - |
dc.subject.keywordPlus | Thermally grown oxide | - |
dc.subject.keywordPlus | Thermal barrier coatings | - |
dc.subject.keywordAuthor | Air plasma spray (APS) | - |
dc.subject.keywordAuthor | Bond coat | - |
dc.subject.keywordAuthor | High velocity oxyfuel (HVOF) | - |
dc.subject.keywordAuthor | Thermal barrier coating (TBC) | - |
dc.subject.keywordAuthor | Thermal durability | - |
dc.subject.keywordAuthor | Thermally grown oxide (TGO) | - |
dc.identifier.url | https://www.scientific.net/MSF.620-622.343 | - |
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