High temperature resistance of silicide-coated niobium
In this paper, thermal oxidation resistance of silicide-coated niobium substrates was tested in a temperature range of 1300–1450°C using an HVOF burner. Pure niobium specimens were coated using the pack cementation CVD method. Three different silicide thickness coatings were deposited. Thermal oxida...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2021-05-01
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| Series: | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/119837/PDF/11_02199_Bpast.No.69(5)_drukM.pdf |
| _version_ | 1828443285228617728 |
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| author | Radosław Szklarek Tomasz Tański Bogusław Mendala Marcin Staszuk Łukasz Krzemiński Paweł Nuckowski Kamil Sobczak |
| author_facet | Radosław Szklarek Tomasz Tański Bogusław Mendala Marcin Staszuk Łukasz Krzemiński Paweł Nuckowski Kamil Sobczak |
| author_sort | Radosław Szklarek |
| collection | DOAJ |
| description | In this paper, thermal oxidation resistance of silicide-coated niobium substrates was tested in a temperature range of 1300–1450°C using an HVOF burner. Pure niobium specimens were coated using the pack cementation CVD method. Three different silicide thickness coatings were deposited. Thermal oxidation resistance of the coated niobium substrates was tested in a temperature range of 1300–1450°C using an HVOF burner. All samples that passed the test showed their ability to stabilize the temperature over a time of 30 s during the thermal test. The rise time of substrate temperature takes about 10 s, following which it keeps constant values. In order to assess the quality of the Nb-Si coatings before and after the thermal test, light microscopy, scanning electron microscopy (SEM) along with chemical analysis (EDS), X-ray diffraction XRD and Vickers hardness test investigation were performed. Results confirmed the presence of substrate Nb compounds as well as Si addition. The oxygen compounds are a result of high temperature intense oxidizing environment that causes the generation of SiO phase in the form of quartz and cristobalite during thermal testing. Except for one specimen, all substrate surfaces pass the high temperature oxidation test with no damages. |
| first_indexed | 2024-12-10T21:26:57Z |
| format | Article |
| id | doaj.art-ae63e75948724ed79d3ba0de48fe0f7c |
| institution | Directory Open Access Journal |
| issn | 2300-1917 |
| language | English |
| last_indexed | 2024-12-10T21:26:57Z |
| publishDate | 2021-05-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| spelling | doaj.art-ae63e75948724ed79d3ba0de48fe0f7c2022-12-22T01:32:58ZengPolish Academy of SciencesBulletin of the Polish Academy of Sciences: Technical Sciences2300-19172021-05-01695https://doi.org/10.24425/bpasts.2021.137416High temperature resistance of silicide-coated niobiumRadosław Szklarek0Tomasz Tański1Bogusław Mendala2Marcin Staszuk3Łukasz Krzemiński4Paweł Nuckowski5Kamil Sobczak6Silesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandSilesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandSilesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandSilesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandSilesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandSilesian University of Technology, ul. Akademicka 2A, 44-100 Gliwice, PolandŁukasiewicz Research Network – Institute of Aviation, al. Krakowska 110/114, 02-256 Warsaw, PolandIn this paper, thermal oxidation resistance of silicide-coated niobium substrates was tested in a temperature range of 1300–1450°C using an HVOF burner. Pure niobium specimens were coated using the pack cementation CVD method. Three different silicide thickness coatings were deposited. Thermal oxidation resistance of the coated niobium substrates was tested in a temperature range of 1300–1450°C using an HVOF burner. All samples that passed the test showed their ability to stabilize the temperature over a time of 30 s during the thermal test. The rise time of substrate temperature takes about 10 s, following which it keeps constant values. In order to assess the quality of the Nb-Si coatings before and after the thermal test, light microscopy, scanning electron microscopy (SEM) along with chemical analysis (EDS), X-ray diffraction XRD and Vickers hardness test investigation were performed. Results confirmed the presence of substrate Nb compounds as well as Si addition. The oxygen compounds are a result of high temperature intense oxidizing environment that causes the generation of SiO phase in the form of quartz and cristobalite during thermal testing. Except for one specimen, all substrate surfaces pass the high temperature oxidation test with no damages.https://journals.pan.pl/Content/119837/PDF/11_02199_Bpast.No.69(5)_drukM.pdfniobiumsilicidethermal barrier coatingcvdhigh temperature oxidation resistance |
| spellingShingle | Radosław Szklarek Tomasz Tański Bogusław Mendala Marcin Staszuk Łukasz Krzemiński Paweł Nuckowski Kamil Sobczak High temperature resistance of silicide-coated niobium Bulletin of the Polish Academy of Sciences: Technical Sciences niobium silicide thermal barrier coating cvd high temperature oxidation resistance |
| title | High temperature resistance of silicide-coated niobium |
| title_full | High temperature resistance of silicide-coated niobium |
| title_fullStr | High temperature resistance of silicide-coated niobium |
| title_full_unstemmed | High temperature resistance of silicide-coated niobium |
| title_short | High temperature resistance of silicide-coated niobium |
| title_sort | high temperature resistance of silicide coated niobium |
| topic | niobium silicide thermal barrier coating cvd high temperature oxidation resistance |
| url | https://journals.pan.pl/Content/119837/PDF/11_02199_Bpast.No.69(5)_drukM.pdf |
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