Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating
Five groups of the NiCr−mullite composite powders in various proportions were mixed by ball milling. The NiCr−mullite composite ceramic coatings on the 45 Steel were prepared by the supersonic plasma spraying. The thermal conductivity and thermal shock resistance of the coatings was tested. The micr...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Powder Metallurgy Technology
2021-04-01
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| Series: | Fenmo yejin jishu |
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| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2019120004 |
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| author | CAO Yang ZHANG Peng-lin NIU Xian-ming HU Chun-Lian CHEN Kai-wang |
| author_facet | CAO Yang ZHANG Peng-lin NIU Xian-ming HU Chun-Lian CHEN Kai-wang |
| author_sort | CAO Yang |
| collection | DOAJ |
| description | Five groups of the NiCr−mullite composite powders in various proportions were mixed by ball milling. The NiCr−mullite composite ceramic coatings on the 45 Steel were prepared by the supersonic plasma spraying. The thermal conductivity and thermal shock resistance of the coatings was tested. The microstructures of the coating surface and cross section were observed by the scanning electron microscope (SEM), the chemical composition in the characteristic area of coatings was analyzed by the energy disperse spectroscopy (EDS), and the phase constitution of the coatings was analyzed by X-ray diffraction (XRD). The results show that, the NiCr solid solution is the matrix of the NiCr−mullite composite coatings, which is uniformly distributed by the mullite particles. The diffusion phases are formed between the mullite particles and the NiCr matrix to improve the wettability, and the mullite particles can be coated firmly by the diffusion phases and the NiCr matrix. Meanwhile, the NiCr matrix can be reinforced by the mullite particles. The strength toughness and the thermal shock resistance of the coatings increase, and the thermal conductivity reduces with the increase of the mullite volume fraction from 38% to 75%. |
| format | Article |
| id | doaj-art-7601e230eae6420bbb6cd582fd8e9fdc |
| institution | OA Journals |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2021-04-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-7601e230eae6420bbb6cd582fd8e9fdc2025-08-20T01:59:00ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842021-04-0139213514010.19591/j.cnki.cn11-1974/tf.2019120004Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coatingCAO YangZHANG Peng-linNIU Xian-mingHU Chun-LianCHEN Kai-wangFive groups of the NiCr−mullite composite powders in various proportions were mixed by ball milling. The NiCr−mullite composite ceramic coatings on the 45 Steel were prepared by the supersonic plasma spraying. The thermal conductivity and thermal shock resistance of the coatings was tested. The microstructures of the coating surface and cross section were observed by the scanning electron microscope (SEM), the chemical composition in the characteristic area of coatings was analyzed by the energy disperse spectroscopy (EDS), and the phase constitution of the coatings was analyzed by X-ray diffraction (XRD). The results show that, the NiCr solid solution is the matrix of the NiCr−mullite composite coatings, which is uniformly distributed by the mullite particles. The diffusion phases are formed between the mullite particles and the NiCr matrix to improve the wettability, and the mullite particles can be coated firmly by the diffusion phases and the NiCr matrix. Meanwhile, the NiCr matrix can be reinforced by the mullite particles. The strength toughness and the thermal shock resistance of the coatings increase, and the thermal conductivity reduces with the increase of the mullite volume fraction from 38% to 75%.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2019120004composite ceramic coatingssupersonic plasma sprayingthermal barrierthermal shock resistance |
| spellingShingle | CAO Yang ZHANG Peng-lin NIU Xian-ming HU Chun-Lian CHEN Kai-wang Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating Fenmo yejin jishu composite ceramic coatings supersonic plasma spraying thermal barrier thermal shock resistance |
| title | Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating |
| title_full | Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating |
| title_fullStr | Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating |
| title_full_unstemmed | Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating |
| title_short | Research on thermal barrier and thermal shock resistance of NiCr−mullite composite ceramic coating |
| title_sort | research on thermal barrier and thermal shock resistance of nicr mullite composite ceramic coating |
| topic | composite ceramic coatings supersonic plasma spraying thermal barrier thermal shock resistance |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2019120004 |
| work_keys_str_mv | AT caoyang researchonthermalbarrierandthermalshockresistanceofnicrmullitecompositeceramiccoating AT zhangpenglin researchonthermalbarrierandthermalshockresistanceofnicrmullitecompositeceramiccoating AT niuxianming researchonthermalbarrierandthermalshockresistanceofnicrmullitecompositeceramiccoating AT huchunlian researchonthermalbarrierandthermalshockresistanceofnicrmullitecompositeceramiccoating AT chenkaiwang researchonthermalbarrierandthermalshockresistanceofnicrmullitecompositeceramiccoating |