Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings
The composite alumina-titania coatings have been widely used in industry fields to protect metallic components from wear, corrosion and thereby prolonging their service time. This paper presents an analysis of the microstructure and mechanical properties of Al2O3-TiO2 composite coatings, plasma spra...
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| Format: | Article |
| Language: | English |
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University of Žilina
2018-09-01
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| Series: | Communications |
| Subjects: | |
| Online Access: | https://komunikacie.uniza.sk/artkey/csl-201803-0003_influence-of-the-titania-content-on-the-microstructure-and-properties-of-plasma-sprayed-alumina-titania-coating.php |
| _version_ | 1797846801610440704 |
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| author | Anna Goral Wojciech Zorawski Otakar Bokuvka |
| author_facet | Anna Goral Wojciech Zorawski Otakar Bokuvka |
| author_sort | Anna Goral |
| collection | DOAJ |
| description | The composite alumina-titania coatings have been widely used in industry fields to protect metallic components from wear, corrosion and thereby prolonging their service time. This paper presents an analysis of the microstructure and mechanical properties of Al2O3-TiO2 composite coatings, plasma sprayed on steel substrates from feedstocks containing various concentrations of the TiO2 powder. The coatings revealed lamellar microstructure, formed by the rapid solidification of molten droplets of the powder on previously deposited splats. The main phase identified in the coatings was γ-Al2O3 phase, the others were TiO2 and α-Al2O3, as well as amorphous phase. The results indicated significant improvement of hardness, Young's modulus and fracture resistance of coatings with an increase in TiO2 from 3 wt. % to 13 wt. %. The friction coefficient was found to be the same for both coatings. |
| first_indexed | 2024-04-09T18:00:49Z |
| format | Article |
| id | doaj.art-0724bdd116184e9386b73f404942fe4c |
| institution | Directory Open Access Journal |
| issn | 1335-4205 2585-7878 |
| language | English |
| last_indexed | 2024-04-09T18:00:49Z |
| publishDate | 2018-09-01 |
| publisher | University of Žilina |
| record_format | Article |
| series | Communications |
| spelling | doaj.art-0724bdd116184e9386b73f404942fe4c2023-04-14T06:31:45ZengUniversity of ŽilinaCommunications1335-42052585-78782018-09-01203151810.26552/com.C.2018.3.15-18csl-201803-0003Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania CoatingsAnna Goral0Wojciech Zorawski1Otakar Bokuvka2Institute of Metallurgy and Materials Science PAS, Krakow, PolandFaculty of Mechatronics and Mechanical Engineering, Kielce University of Technology, PolandFaculty of Mechanical Engineering, University of Zilina, SlovakiaThe composite alumina-titania coatings have been widely used in industry fields to protect metallic components from wear, corrosion and thereby prolonging their service time. This paper presents an analysis of the microstructure and mechanical properties of Al2O3-TiO2 composite coatings, plasma sprayed on steel substrates from feedstocks containing various concentrations of the TiO2 powder. The coatings revealed lamellar microstructure, formed by the rapid solidification of molten droplets of the powder on previously deposited splats. The main phase identified in the coatings was γ-Al2O3 phase, the others were TiO2 and α-Al2O3, as well as amorphous phase. The results indicated significant improvement of hardness, Young's modulus and fracture resistance of coatings with an increase in TiO2 from 3 wt. % to 13 wt. %. The friction coefficient was found to be the same for both coatings.https://komunikacie.uniza.sk/artkey/csl-201803-0003_influence-of-the-titania-content-on-the-microstructure-and-properties-of-plasma-sprayed-alumina-titania-coating.phpal2o3-tio2 coatingplasma sprayinghardnessfracture resistance |
| spellingShingle | Anna Goral Wojciech Zorawski Otakar Bokuvka Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings Communications al2o3-tio2 coating plasma spraying hardness fracture resistance |
| title | Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings |
| title_full | Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings |
| title_fullStr | Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings |
| title_full_unstemmed | Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings |
| title_short | Influence of the Titania Content on the Microstructure and Properties of Plasma Sprayed Alumina-Titania Coatings |
| title_sort | influence of the titania content on the microstructure and properties of plasma sprayed alumina titania coatings |
| topic | al2o3-tio2 coating plasma spraying hardness fracture resistance |
| url | https://komunikacie.uniza.sk/artkey/csl-201803-0003_influence-of-the-titania-content-on-the-microstructure-and-properties-of-plasma-sprayed-alumina-titania-coating.php |
| work_keys_str_mv | AT annagoral influenceofthetitaniacontentonthemicrostructureandpropertiesofplasmasprayedaluminatitaniacoatings AT wojciechzorawski influenceofthetitaniacontentonthemicrostructureandpropertiesofplasmasprayedaluminatitaniacoatings AT otakarbokuvka influenceofthetitaniacontentonthemicrostructureandpropertiesofplasmasprayedaluminatitaniacoatings |