Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating
The study involves <i>in-situ</i> synthesis of CrFeAlTi composite coating using laser micro-melting processing. The coating was successfully prepared by laser irradiating CrFeAlTi coating prepared by flame spraying on the China low activation martensitic (CLAM) steel substrate, and then...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2018-02-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2018/V46/I2/57 |
| _version_ | 1797967140560568320 |
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| author | ZHANG Man-li QIU Chang-jun JIANG Yan-lin ZHENG Wen-quan XIA Yan |
| author_facet | ZHANG Man-li QIU Chang-jun JIANG Yan-lin ZHENG Wen-quan XIA Yan |
| author_sort | ZHANG Man-li |
| collection | DOAJ |
| description | The study involves <i>in-situ</i> synthesis of CrFeAlTi composite coating using laser micro-melting processing. The coating was successfully prepared by laser irradiating CrFeAlTi coating prepared by flame spraying on the China low activation martensitic (CLAM) steel substrate, and then Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating was synthesized by <i>in-situ</i> reaction on the surface of flame sprayed coating. The coating morphology, microstructure, phase composition, micro-hardness, dry sliding wear properties and corrosion resistance in liquid PbBi alloy were analyzed by stereomicroscope, scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), micro-sclerometer, vertical universal friction wear testing machine and static PbBi corrosion test device, respectively. The test results show that the surface of Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating is smooth, and the microstructure of coating is both homogeneous and dense without defects such as crack, dimple and porosity, <i>etc</i>., a good metallurgical bonding between the composite ceramic coating and the substrate, and the interface is obvious. The phases of the coating surface are mainly composed of Al<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>, (Al.948Cr.052)<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>TiO<sub>5</sub> and FeCr, <i>etc</i>. The coating shows a high average micro-hardness of approximately 1864.2HV<sub>0.2</sub>, which is about three times higher than that of the CLAM steel substrate, and presents gradient distribution with stable transition from the coating surface to the substrate. Comparing with the substrate, the coating presents excellent wear resistance. The wear mass loss of the coating is just one sixth of that of the substrate. Meanwhile, the coating exhibits the best corrosion resistance in the liquid PbBi. |
| first_indexed | 2024-04-11T02:26:30Z |
| format | Article |
| id | doaj.art-f9822e453c9749e4b3dfb84011df5b85 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:26:30Z |
| publishDate | 2018-02-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-f9822e453c9749e4b3dfb84011df5b852023-01-02T22:49:43ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-02-01462576510.11868/j.issn.1001-4381.2016.001453201802001453Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic CoatingZHANG Man-li0QIU Chang-jun1JIANG Yan-lin2ZHENG Wen-quan3XIA Yan4School of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, ChinaSchool of Mechanical Engineering, University of South China, Hengyang 421001, Hunan, ChinaThe study involves <i>in-situ</i> synthesis of CrFeAlTi composite coating using laser micro-melting processing. The coating was successfully prepared by laser irradiating CrFeAlTi coating prepared by flame spraying on the China low activation martensitic (CLAM) steel substrate, and then Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating was synthesized by <i>in-situ</i> reaction on the surface of flame sprayed coating. The coating morphology, microstructure, phase composition, micro-hardness, dry sliding wear properties and corrosion resistance in liquid PbBi alloy were analyzed by stereomicroscope, scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), micro-sclerometer, vertical universal friction wear testing machine and static PbBi corrosion test device, respectively. The test results show that the surface of Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating is smooth, and the microstructure of coating is both homogeneous and dense without defects such as crack, dimple and porosity, <i>etc</i>., a good metallurgical bonding between the composite ceramic coating and the substrate, and the interface is obvious. The phases of the coating surface are mainly composed of Al<sub>2</sub>O<sub>3</sub>, TiO<sub>2</sub>, (Al.948Cr.052)<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>TiO<sub>5</sub> and FeCr, <i>etc</i>. The coating shows a high average micro-hardness of approximately 1864.2HV<sub>0.2</sub>, which is about three times higher than that of the CLAM steel substrate, and presents gradient distribution with stable transition from the coating surface to the substrate. Comparing with the substrate, the coating presents excellent wear resistance. The wear mass loss of the coating is just one sixth of that of the substrate. Meanwhile, the coating exhibits the best corrosion resistance in the liquid PbBi.http://jme.biam.ac.cn/CN/Y2018/V46/I2/57flame sprayinglaser <i>in-situ</i> synthesis technologyAl<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coatingmicrostructureproperty |
| spellingShingle | ZHANG Man-li QIU Chang-jun JIANG Yan-lin ZHENG Wen-quan XIA Yan Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating Cailiao gongcheng flame spraying laser <i>in-situ</i> synthesis technology Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating microstructure property |
| title | Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating |
| title_full | Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating |
| title_fullStr | Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating |
| title_full_unstemmed | Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating |
| title_short | Microstructure and Properties of Laser <i>In-situ</i> Synthesized Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> Composite Ceramic Coating |
| title_sort | microstructure and properties of laser i in situ i synthesized al sub 2 sub o sub 3 sub tio sub 2 sub composite ceramic coating |
| topic | flame spraying laser <i>in-situ</i> synthesis technology Al<sub>2</sub>O<sub>3</sub>-TiO<sub>2</sub> composite ceramic coating microstructure property |
| url | http://jme.biam.ac.cn/CN/Y2018/V46/I2/57 |
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