MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING
NiCrAlY deposited by different thermal spraying methods is commonly used as the bond coat material in thermal barrier coatings (TBCs). In the present study, two experimental coatings were deposited by hybrid water stabilized plasma (WSP-H) and radio frequency inductively coupled plasma (RF-ICP) usin...
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| Language: | English |
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Czech Technical University in Prague
2020-06-01
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| Series: | Acta Polytechnica CTU Proceedings |
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| Online Access: | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6662 |
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| author | Iosif Hulka Radek Mušálek František Lukáč Jakub Klečka Tomáš Chrástka |
| author_facet | Iosif Hulka Radek Mušálek František Lukáč Jakub Klečka Tomáš Chrástka |
| author_sort | Iosif Hulka |
| collection | DOAJ |
| description | NiCrAlY deposited by different thermal spraying methods is commonly used as the bond coat material in thermal barrier coatings (TBCs). In the present study, two experimental coatings were deposited by hybrid water stabilized plasma (WSP-H) and radio frequency inductively coupled plasma (RF-ICP) using the same feedstock powder. Spark plasma sintering (SPS) was used to manufacture a compact NiCrAlY from the same feedstock powder as a reference material. Microstructure, internal oxidation, phase characterization and quantification of the mechanical behaviour in terms of microhardness were studied. The investigations clearly showed microstructural and mechanical differences between the NiCrAlY samples manufactured by different plasma technologies. The results confirmed that SPS and RF-ICP provide dense structures with no oxides due to the fabrication under protective atmosphere and similar mechanical properties. Thus, RF-ICP may be used for deposition of very dense coatings with microstructure and hardness comparable to compacted materials prepared by SPS. |
| format | Article |
| id | doaj-art-1beab1fb198d44b49cf550fb8fe06591 |
| institution | Kabale University |
| issn | 2336-5382 |
| language | English |
| publishDate | 2020-06-01 |
| publisher | Czech Technical University in Prague |
| record_format | Article |
| series | Acta Polytechnica CTU Proceedings |
| spelling | doaj-art-1beab1fb198d44b49cf550fb8fe065912025-08-20T03:33:18ZengCzech Technical University in PragueActa Polytechnica CTU Proceedings2336-53822020-06-01270131710.14311/APP.2020.27.00135200MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYINGIosif Hulka0Radek Mušálek1František Lukáč2Jakub Klečka3Tomáš Chrástka4Czech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech RepublicCzech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech RepublicCzech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech RepublicCzech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech RepublicCzech Academy of Sciences, Institute of Plasma Physics, Za Slovankou 1782/3, 182 00 Prague 8, Czech RepublicNiCrAlY deposited by different thermal spraying methods is commonly used as the bond coat material in thermal barrier coatings (TBCs). In the present study, two experimental coatings were deposited by hybrid water stabilized plasma (WSP-H) and radio frequency inductively coupled plasma (RF-ICP) using the same feedstock powder. Spark plasma sintering (SPS) was used to manufacture a compact NiCrAlY from the same feedstock powder as a reference material. Microstructure, internal oxidation, phase characterization and quantification of the mechanical behaviour in terms of microhardness were studied. The investigations clearly showed microstructural and mechanical differences between the NiCrAlY samples manufactured by different plasma technologies. The results confirmed that SPS and RF-ICP provide dense structures with no oxides due to the fabrication under protective atmosphere and similar mechanical properties. Thus, RF-ICP may be used for deposition of very dense coatings with microstructure and hardness comparable to compacted materials prepared by SPS.https://ojs.cvut.cz/ojs/index.php/APP/article/view/6662microhardness, microstructure, nicraly, plasma spraying, spark plasma sintering |
| spellingShingle | Iosif Hulka Radek Mušálek František Lukáč Jakub Klečka Tomáš Chrástka MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING Acta Polytechnica CTU Proceedings microhardness, microstructure, nicraly, plasma spraying, spark plasma sintering |
| title | MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING |
| title_full | MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING |
| title_fullStr | MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING |
| title_full_unstemmed | MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING |
| title_short | MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING |
| title_sort | microstructure and microhardness evaluation for nicraly materials manufactured by spark plasma sintering and plasma spraying |
| topic | microhardness, microstructure, nicraly, plasma spraying, spark plasma sintering |
| url | https://ojs.cvut.cz/ojs/index.php/APP/article/view/6662 |
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