High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added
This work studied Mo-TiC-xCr (x = 0.0, 0.5, 1.0 wt.%) matrix composites with different component gradients prepared by Spark Plasma Sintering (SPS). The high-temperature oxidation test was conducted at 1200 ℃ in the atmosphere to study the influence of Cr on the high-temperature oxidation behavior o...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2022-12-01
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| Series: | Medžiagotyra |
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| Online Access: | https://matsc.ktu.lt/index.php/MatSc/article/view/30338 |
| _version_ | 1811164958210129920 |
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| author | Hongtao LI Renheng HAN Fangchao PENG Hongliang YIN Ming TANG Hexin ZHANG Chengzhi ZHAO |
| author_facet | Hongtao LI Renheng HAN Fangchao PENG Hongliang YIN Ming TANG Hexin ZHANG Chengzhi ZHAO |
| author_sort | Hongtao LI |
| collection | DOAJ |
| description | This work studied Mo-TiC-xCr (x = 0.0, 0.5, 1.0 wt.%) matrix composites with different component gradients prepared by Spark Plasma Sintering (SPS). The high-temperature oxidation test was conducted at 1200 ℃ in the atmosphere to study the influence of Cr on the high-temperature oxidation behavior of TiC-reinforced Mo matrix composites. The phase composition and morphology of the oxide film were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS), and the goal was to determine the effect of the Cr content on the high-temperature oxidation properties of the Mo-TiC-xCr (x = 0.0, 0.5, 1.0 wt.%) matrix composites. The results showed that with increasing oxidation time, the oxide film on the surface of Mo alloy will crack and fall off easily, and the porosity gradually increases. Oxygen underwent vigorous oxidation through the pores and the inside of the matrix, and a protective MoO2 internal oxide film disappeared. With increasing Cr content, the high-temperature oxidation performance of the Mo alloy improved, the thickness of the oxide film decreased, warping of the surface oxide film was inhibited, the porosity decreased, and volatilization of MoO3 was inhibited. After oxidation, the surface oxide film was mainly composed of TiO2, MoO3, Cr2O3 and Cr2(MoO4)3 phases. The TiC particles dispersed in the matrix were oxidized to TiO2 to inhibit the oxidation of the alloy. The Cr formed a protective oxidation film of Cr2O3, which effectively reduced the porosity and delayed the volatilization of the MoO3, thus improving its oxidation performance. |
| first_indexed | 2024-04-10T15:29:42Z |
| format | Article |
| id | doaj.art-f9e312d2b77b41ae9d68f29babe7590f |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-04-10T15:29:42Z |
| publishDate | 2022-12-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-f9e312d2b77b41ae9d68f29babe7590f2023-02-14T04:13:40ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892022-12-0128440841310.5755/j02.ms.3033835592High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element AddedHongtao LI0https://orcid.org/0000-0003-2208-3559Renheng HAN1https://orcid.org/0000-0001-9360-6500Fangchao PENG2https://orcid.org/0000-0002-3315-6795Hongliang YIN3https://orcid.org/0000-0002-6476-4339Ming TANG4https://orcid.org/0000-0003-4374-3309Hexin ZHANG5https://orcid.org/0000-0002-5793-5013Chengzhi ZHAO6https://orcid.org/0000-0002-4323-0098Harbin Engineering UniversityHarbin Engineering UniversityHarbin Engineering UniversityHarbin Engineering UniversityHarbin Engineering UniversityHarbin Engineering UniversityHarbin Engineering UniversityThis work studied Mo-TiC-xCr (x = 0.0, 0.5, 1.0 wt.%) matrix composites with different component gradients prepared by Spark Plasma Sintering (SPS). The high-temperature oxidation test was conducted at 1200 ℃ in the atmosphere to study the influence of Cr on the high-temperature oxidation behavior of TiC-reinforced Mo matrix composites. The phase composition and morphology of the oxide film were analyzed using X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS), and the goal was to determine the effect of the Cr content on the high-temperature oxidation properties of the Mo-TiC-xCr (x = 0.0, 0.5, 1.0 wt.%) matrix composites. The results showed that with increasing oxidation time, the oxide film on the surface of Mo alloy will crack and fall off easily, and the porosity gradually increases. Oxygen underwent vigorous oxidation through the pores and the inside of the matrix, and a protective MoO2 internal oxide film disappeared. With increasing Cr content, the high-temperature oxidation performance of the Mo alloy improved, the thickness of the oxide film decreased, warping of the surface oxide film was inhibited, the porosity decreased, and volatilization of MoO3 was inhibited. After oxidation, the surface oxide film was mainly composed of TiO2, MoO3, Cr2O3 and Cr2(MoO4)3 phases. The TiC particles dispersed in the matrix were oxidized to TiO2 to inhibit the oxidation of the alloy. The Cr formed a protective oxidation film of Cr2O3, which effectively reduced the porosity and delayed the volatilization of the MoO3, thus improving its oxidation performance.https://matsc.ktu.lt/index.php/MatSc/article/view/30338high-temperature oxidationnanocomposite materialsticmo alloy |
| spellingShingle | Hongtao LI Renheng HAN Fangchao PENG Hongliang YIN Ming TANG Hexin ZHANG Chengzhi ZHAO High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added Medžiagotyra high-temperature oxidation nanocomposite materials tic mo alloy |
| title | High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added |
| title_full | High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added |
| title_fullStr | High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added |
| title_full_unstemmed | High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added |
| title_short | High-temperature Oxidation Properties of TiC-reinforced Mo Matrix Composites with Cr Element Added |
| title_sort | high temperature oxidation properties of tic reinforced mo matrix composites with cr element added |
| topic | high-temperature oxidation nanocomposite materials tic mo alloy |
| url | https://matsc.ktu.lt/index.php/MatSc/article/view/30338 |
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