Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU119328" target="_blank" >RIV/00216305:26210/16:PU119328 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S2211812816000250" target="_blank" >http://www.sciencedirect.com/science/article/pii/S2211812816000250</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mspro.2016.03.016" target="_blank" >10.1016/j.mspro.2016.03.016</a>

Result language

angličtina

Original language name

Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam

Original language description

In the present work two techniques are combined to optimize bond coat properties before thermal barrier coating (TBC) application, the cold gas dynamic spraying (CGDS) and electron beam remelting (EB). Results of the work focused on comparison of high velocity oxygen fuel (HVOF) and CGDS CoNiCrAlY bond coats are firstly presented. Than the effect of the electron beam remelting of the CoNiCrAlY coating manufactured by HVOF and CGDS deposition techniques is deeply investigated. The CoNiCrAlY bond coat to Inconel substrate interface displayed locations with very poor bonding, in larger extent for the states prepared by HVOF comparing to CGDS. The bond coats prepared by both ways being EB remelted are typically removal of the defects on the substrate to bond coat interface. The microstructure of the bond coat after this treatment is formed by Inconel fine grain layer being followed by the surface layer consisting of elongated dendritic microstructure. An increased porosity has been observed in interdendritical space in larger extent for CGDS samples.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20506 - Coating and films

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Procedia Materials Science

ISSN

2211-8128

e-ISSN

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Volume of the periodical

12

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

6

Pages from-to

89-94

UT code for WoS article

000386622900016

EID of the result in the Scopus database

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