Al2O3-TiO2 coatings deposition by intermixed and double injection SPS concepts

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00559808" target="_blank" >RIV/61389021:_____/21:00559808 - isvavai.cz</a>

Result on the web

<a href="https://www.sciendo.com/article/10.2478/msp-2021-0046" target="_blank" >https://www.sciendo.com/article/10.2478/msp-2021-0046</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/msp-2021-0046" target="_blank" >10.2478/msp-2021-0046</a>

Result language

angličtina

Original language name

Al2O3-TiO2 coatings deposition by intermixed and double injection SPS concepts

Original language description

This work focuses on the study on the novel hybrid method of simultaneous spraying from two different materials (Al2O3 and TiO2) by means of suspension plasma spraying (SPS) using submicron powder and water suspension. The goal was to attempt the deposition of intermixed alumina-titania coatings, namely: Al2O3 + 3 wt.% TiO2, Al2O3 + 13 wt.% TiO2, and Al2O3 + 40 wt.% TiO2. Such compositions are already used but in the form of conventionally plasma sprayed coatings, with micrometer-sized powder. Meanwhile, the injection of feedstocks with submicron-sized particles has not been established yet. In particular, this paper uses two routes of feedstock injection, (i) with the use of an intermixed suspension and (ii) a double injection of separate suspensions. The attention was paid to the characterization of the feedstock materials, description of deposition parameters as well as the morphology, microstructure, and phase composition of the obtained coatings. Among all coatings, Al2O3 + 40 wt.% TiO2 sprayed with double injection contained the most homogeneously distributed and melted splats. The results from this work demonstrate the possibility of coating deposition both by intermixed and double injection concepts but also the need for the further application-relevant optimization, related to the presence of intercolumnar gaps in the microstructure of the coatings.

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

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA19-10246S" target="_blank" >GA19-10246S: Deposition mechanisms and properties of multiphase plasma sprayed coatings prepared with liquid feedstocks</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Materials Science-Poland

ISSN

2083-134X

e-ISSN

2083-134X

Volume of the periodical

39

Issue of the periodical within the volume

4

Country of publishing house

PL - POLAND

Number of pages

16

Pages from-to

599-614

UT code for WoS article

000788837800001

EID of the result in the Scopus database

2-s2.0-85129703861