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学者姓名：李长久
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| GB/T 7714 | Liu, Sen-Hui , Ji, Gang , Li, Chang-Jiu et al. Novel long laminar plasma sprayed hybrid structure thermal barrier coatings for high-temperature anti-sintering and volcanic ash corrosion resistance [J]. | Journal of Materials Science and Technology , 2021 , 79 : 141-146 . |
| MLA | Liu, Sen-Hui et al. "Novel long laminar plasma sprayed hybrid structure thermal barrier coatings for high-temperature anti-sintering and volcanic ash corrosion resistance" . | Journal of Materials Science and Technology 79 (2021) : 141-146 . |
| APA | Liu, Sen-Hui , Ji, Gang , Li, Chang-Jiu , Li, Cheng-Xin , Guo, Hong-Bo . Novel long laminar plasma sprayed hybrid structure thermal barrier coatings for high-temperature anti-sintering and volcanic ash corrosion resistance . | Journal of Materials Science and Technology , 2021 , 79 , 141-146 . |
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Abstract ：
A composite coating composed of intermetallic compounds, Al-Si alloys, and an oxide ceramic layer was prepared on TA2 substrate by hot-dipping Al-Si alloy and micro-arc oxidation (MAO) methods. The microstructure and composition distribution of the resulting hot-dipped Al-Si alloy layer and MAO-caused ceramic layer were studied by scanning electron microscope (SEM) and energy dispersive spectrum (EDS). In addition, the phase composition of the diffusion layer obtained by the Al-Si alloy hot-dipping procedure was investigated by electron backscattered diffraction (EBSD), and the phase structure of the MAO-treated layer was studied by X-ray diffraction (XRD) analysis and X-ray photoelectron spectroscopy (XPS). The MAO method can make the hot-dipped Al-Si alloy layer in-situ oxidized to form a ceramic layer. Finally, a three-layer composite coating composed of a diffusion layer formed by the Ti-Al-Si interdiffusion, an Al-Si alloy layer and a ceramic layer was prepared on TA2 substrate. Compared with TA2 substrate, the TA2 sample with a three-layer composite coating has larger friction coefficient and less abrasion loss. The three-layer composite coating can significantly improve the wear resistance of TA2. A technical composite method was developed to the low cost in-situ growth of alumina-based ceramic wear-resistant coatings on TA2 substrate.
Keyword ：
hot-dipped Al-Si alloy micro-arc oxidation titanium
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| GB/T 7714 | Wang, Shaopeng , Zhou, Lian , Li, Changjiu et al. Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al-Si Alloy and Using Micro-Arc Oxidation Technologies (MAO) [J]. | COATINGS , 2020 , 10 (4) . |
| MLA | Wang, Shaopeng et al. "Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al-Si Alloy and Using Micro-Arc Oxidation Technologies (MAO)" . | COATINGS 10 . 4 (2020) . |
| APA | Wang, Shaopeng , Zhou, Lian , Li, Changjiu , Li, Zhengxian , Li, Hongzhan , Yang, Lijing . Micrographic Properties of Composite Coatings Prepared on TA2 Substrate by Hot-Dipping in Al-Si Alloy and Using Micro-Arc Oxidation Technologies (MAO) . | COATINGS , 2020 , 10 (4) . |
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Currently, the self-shadowing effect of impinging particles is recognized as a vital factor to form columnar-like coating in the manufacture of thermal barrier coatings. Most of these quasi-columnar coatings are usually prepared under a very low-pressure condition. This paper investigates a novel quasi-columnar yttria stabilized zirconia (YSZ) coating using an atmospheric plasma spray-physical vapor deposition method. The microstructures of the coating present a quasi-columnar structure that is distributed along the cross-section of the coating within certain intervals with a large number of cluster-like structures on the top surface of the coating. A lower particle velocity that contributes to the generation of a mass of vapor YSZ materials is studied via experimental and numerical analyses and these results are compared with other current plasma spray methods. The mechanism of the self-shadowing effect from impinging particles that leads to the formation of a quasi-columnar feature at the boundary layer of the substrate is demonstrated by a three-dimensional numerical simulation and experimental observation. Furthermore, the hybrid growth model of the vapor and droplet co-deposited coating is clarified in this paper. © 2020 IOP Publishing Ltd.
Keyword ：
Boundary layers Numerical analysis Numerical methods Physical vapor deposition Plasma jets Plasma spraying Thermal barrier coatings Velocity control Yttria stabilized zirconia Yttrium metallography Yttrium oxide Zirconia
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| GB/T 7714 | Liu, Sen-Hui , Trelles, Juan Pablo , Li, Chang-Jiu et al. Numerical analysis of the plasma-induced self-shadowing effect of impinging particles and phase transformation in a novel long laminar plasma jet [J]. | Journal of Physics D: Applied Physics , 2020 , 53 (37) . |
| MLA | Liu, Sen-Hui et al. "Numerical analysis of the plasma-induced self-shadowing effect of impinging particles and phase transformation in a novel long laminar plasma jet" . | Journal of Physics D: Applied Physics 53 . 37 (2020) . |
| APA | Liu, Sen-Hui , Trelles, Juan Pablo , Li, Chang-Jiu , Guo, Hong-Bo , Li, Cheng-Xin . Numerical analysis of the plasma-induced self-shadowing effect of impinging particles and phase transformation in a novel long laminar plasma jet . | Journal of Physics D: Applied Physics , 2020 , 53 (37) . |
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A hot-dip aluminised layer was prepared on a Mo1 substrate and the obtained layer was oxidised in situ by a micro-arc oxidation (MAO) technique to form an oxide ceramic coating. The obtained hot-dip aluminised layer had a two-layer structure overall: the outer layer was a pure aluminium layer, and the inner layer was a diffusion layer. The hot-dip aluminising temperature directly influenced the structure and phase composition of the obtained diffusion layer. The diffusion layer of the hot-dip aluminised layer at 710 °C was divided into three layers. The inner, intermediate, and outer layers were mainly composed of Al8Mo3, Al4Mo, and Al12Mo phases, respectively. The diffusion layer of the hot-dip aluminised layer at 750 °C was divided into two layers: the inner layer was mainly composed of an Al8Mo3 phase, and the outer layer of Al4Mo. After the hot-dip aluminised layer was treated by MAO, a three-layer coating was obtained. The outer layer was a ceramic one obtained by MAO, which was mainly composed of Al2O3, mullite, and unoxidized aluminium. The middle one was pure aluminium obtained by hot-dip aluminising and without MAO. The inner layer was an Al–Mo diffusion layer. © 2019 Elsevier B.V.
Keyword ：
Alumina Aluminum Aluminum alloys Aluminum oxide Binary alloys Ceramic coatings Composite coatings Diffusion Molybdenum Molybdenum alloys Morphology Mullite Oxidation
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| GB/T 7714 | Wang, Shao-Peng , Zhou, Lian , Li, Chang-Jiu et al. Morphology of composite coatings formed on Mo1 substrate using hot-dip aluminising and micro-arc oxidation techniques [J]. | Applied Surface Science , 2020 , 508 . |
| MLA | Wang, Shao-Peng et al. "Morphology of composite coatings formed on Mo1 substrate using hot-dip aluminising and micro-arc oxidation techniques" . | Applied Surface Science 508 (2020) . |
| APA | Wang, Shao-Peng , Zhou, Lian , Li, Chang-Jiu , Li, Zheng-Xian , Li, Hong-Zhan , Yang, Li-Jing . Morphology of composite coatings formed on Mo1 substrate using hot-dip aluminising and micro-arc oxidation techniques . | Applied Surface Science , 2020 , 508 . |
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Abstract ：
Aluminium layers were coated onto the surface of pure titanium using hot-dip aluminising technology, and then the aluminium layers were in situ oxidised to form oxide ceramic coatings, using the micro-arc oxidation (MAO) technique. The microstructure and composition distribution of the hot-dip aluminium coatings and ceramic layers were studied by using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The phase structure of the MAO layers was studied using X-ray diffraction. The surface composition of the MAO layer was studied by X-ray photoelectron spectroscopy. The wear resistance of the pure titanium substrate and the ceramic layers coated on its surface were evaluated by using the ball-on-disc wear method. Therefore, aluminising coatings, which consist of a diffusion layer and a pure aluminium layer, could be formed on pure titanium substrates using the hot-dip aluminising method. The MAO method enabled the in-situ oxidation of hot-dip pure aluminium layers, which subsequently led to the formation of ceramic layers. Moreover, the wear resistance values of the ceramic layers were significantly higher than that of the pure titanium substrate.
Keyword ：
hot-dip aluminising micro-arc oxidation titanium
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| GB/T 7714 | Wang, Shaopeng , Zhou, Lian , Li, Changjiu et al. Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies [J]. | MATERIALS , 2019 , 12 (5) . |
| MLA | Wang, Shaopeng et al. "Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies" . | MATERIALS 12 . 5 (2019) . |
| APA | Wang, Shaopeng , Zhou, Lian , Li, Changjiu , Li, Zhengxian , Li, Hongzhan . Morphology and Wear Resistance of Composite Coatings Formed on a TA2 Substrate Using Hot-Dip Aluminising and Micro-Arc Oxidation Technologies . | MATERIALS , 2019 , 12 (5) . |
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Abstract ：
A novel atmospheric plasma spray method was proposed, using a newly development direct current non-transferred arc plasma torch which generated a long, stable and silent plasma jet in atmospheric environment without any other auxiliary equipment. The lengths of these plasma jets varied from 100 to 1000 mm in atmospheric environment. The fluid characteristics of plasma jets presented a laminar or quasi-laminar with a low-level noise less than 80 dB at the same time. Moreover, the lengths of the plasma jets increased with the increase of the output power at every constant gas flow rate and decreased with the increase of total gas flow rate at every constant output power, providing a super-long particle flight time in the atmospheric plasma spray process. The research history and current researches of these laminar plasma technologies are listed. The microstructure evolution, particle heating and motion were all presented by using six different types of powders. The effects of particle flowing characteristics to the formation of coatings were discussed. The results show a super long distance of particle heating and motion in the experiment when the system operates in a low output power and gas flow rate. Thus, low particle velocity and surface temperature are obtained. The variations of microstructures of the coatings and particle melting during the deposition can through different operation conditions, such as lengths of the plasma jet or spraying distances. Mass of vapor deposited coatings are obtained by using metallic or ceramic powders. © 2019, Editorial Office of CHINA SURFACE ENGINEERING. All right reserved.
Keyword ：
Atmospheric movements Auxiliary equipment Coatings Flow of gases Hard facing Microstructure Plasma jets Plasma spraying Plasma torches Powders Velocity control
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| GB/T 7714 | Li, Chengxin , Liu, Senhui , Zhang, Huiyu et al. An Introduction and Progress of a Novel Atmospheric Laminar Plasma Spray Method [J]. | China Surface Engineering , 2019 , 32 (6) : 1-19 . |
| MLA | Li, Chengxin et al. "An Introduction and Progress of a Novel Atmospheric Laminar Plasma Spray Method" . | China Surface Engineering 32 . 6 (2019) : 1-19 . |
| APA | Li, Chengxin , Liu, Senhui , Zhang, Huiyu , Li, Changjiu , Li, Lu , Huang, Jiahua et al. An Introduction and Progress of a Novel Atmospheric Laminar Plasma Spray Method . | China Surface Engineering , 2019 , 32 (6) , 1-19 . |
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Abstract ：
It is usually difficult to deposit a dense ceramic coating with fully bonded splats by plasma spraying at a room temperature. Following the recent research progress on the splat interface bonding formation, it was found that there is a well-defined relationship between the critical bonding temperature and the melting point of spray material. Thus, it can be proposed to control the lamellar bonding through the deposition temperature. In this study, to examine the feasibility of the bonding formation theory, a novel approach to the development of ceramic coating with dense microstructure by plasma spraying through materials design with a low melting point is proposed. Potassium titanate K2Ti6O13 was selected as a typical ceramic material of a relatively low melting point for plasma spraying deposition of dense coating with well-bonded splats. Experiment was conducted by using K2Ti6O13 for both splat and coating deposition. Results show that the splat is fully bonded with a ceramic substrate at room temperature, and the K2Ti6O13 coating presents a dense microstructure and a fracture surface morphology similar to sintered bulk ceramic, revealing excellent interlamellar bonding formation. Moreover, both the hardness test and erosion test at 90 degrees further confirmed the formation of the isotropic ceramic coating with fully bonded lamellae.
Keyword ：
dense ceramic coatings erosion behavior K2Ti6O13 lamellae bonding plasma spraying
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| GB/T 7714 | Li, Chang-Jiu , Zhang, Qi-Lan , Yao, Shu-Wei et al. Plasma Spraying of Dense Ceramic Coating with Fully Bonded Lamellae Through Materials Design Based on the Critical Bonding Temperature Concept [J]. | JOURNAL OF THERMAL SPRAY TECHNOLOGY , 2019 , 28 (1-2) : 53-62 . |
| MLA | Li, Chang-Jiu et al. "Plasma Spraying of Dense Ceramic Coating with Fully Bonded Lamellae Through Materials Design Based on the Critical Bonding Temperature Concept" . | JOURNAL OF THERMAL SPRAY TECHNOLOGY 28 . 1-2 (2019) : 53-62 . |
| APA | Li, Chang-Jiu , Zhang, Qi-Lan , Yao, Shu-Wei , Yang, Guan-Jun , Li, Cheng-Xin . Plasma Spraying of Dense Ceramic Coating with Fully Bonded Lamellae Through Materials Design Based on the Critical Bonding Temperature Concept . | JOURNAL OF THERMAL SPRAY TECHNOLOGY , 2019 , 28 (1-2) , 53-62 . |
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Abstract ：
Aluminium layers were coated onto the surface of pure titanium using hot-dip aluminising technology, and then the aluminium layers were in situ oxidised to form oxide ceramic coatings, using the micro-arc oxidation (MAO) technique. The microstructure and composition distribution of the hot-dip aluminium coatings and ceramic layers were studied by using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The phase structure of the MAO layers was studied using X-ray diffraction. The surface composition of the MAO layer was studied by X-ray photoelectron spectroscopy. The wear resistance of the pure titanium substrate and the ceramic layers coated on its surface were evaluated by using the ball-on-disc wear method. Therefore, aluminising coatings, which consist of a diffusion layer and a pure aluminium layer, could be formed on pure titanium substrates using the hot-dip aluminising method. The MAO method enabled the in-situ oxidation of hot-dip pure aluminium layers, which subsequently led to the formation of ceramic layers. Moreover, the wear resistance values of the ceramic layers were significantly higher than that of the pure titanium substrate. © 2018 by the authors.
Keyword ：
Ceramic coatings Ceramic materials Composite coatings Diffusion coatings Energy dispersive spectroscopy Morphology Oxidation Phase structure Scanning electron microscopy Substrates Titanium Titanium oxides Wear of materials Wear resistance X ray photoelectron spectroscopy
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| GB/T 7714 | Wang, Shaopeng , Zhou, Lian , Li, Changjiu et al. Morphology and wear resistance of composite coatings formed on a TA2 substrate using hot-dip aluminising and micro-arc oxidation technologies [J]. | Materials , 2019 , 12 (5) . |
| MLA | Wang, Shaopeng et al. "Morphology and wear resistance of composite coatings formed on a TA2 substrate using hot-dip aluminising and micro-arc oxidation technologies" . | Materials 12 . 5 (2019) . |
| APA | Wang, Shaopeng , Zhou, Lian , Li, Changjiu , Li, Zhengxian , Li, Hongzhan . Morphology and wear resistance of composite coatings formed on a TA2 substrate using hot-dip aluminising and micro-arc oxidation technologies . | Materials , 2019 , 12 (5) . |
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Abstract ：
Particle collision behavior influences significantly inter-nano particle bonding formation during the nano-ceramic coating deposition by vacuum cold spraying (or aerosol deposition method). In order to illuminate the collision behavior between nano-scale ceramic particles, molecular dynamic simulation was applied to explore impact process between nano-scale TiO2 particles through controlling impact velocities. Results show that the recoil efficiency of the nano-scale TiO2 particle is decreased with the increase of the impact velocity. Nano-scale TiO2 particle exhibits localized plastic deformation during collision at low velocities, while it is intensively deformed by collision at high velocities. This intensive deformation promotes the nano-particle adhesion rather than rebounding off. A relationship between the adhesion energy and the rebound energy is established for the bonding formation of the nano-scale TiO2 particle. The adhesion energy required to the bonding formation between nano-scale ceramic particles can be produced by high velocity collision.
Keyword ：
Collision Behavior MD Simulation Particle Bonding TiO2 Vacuum Cold Spraying
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| GB/T 7714 | Yao, Hai-Long , Yang, Guan-Jun , Li, Chang-Jiu . MD Simulation on Collision Behavior Between Nano-Scale TiO2 Particles During Vacuum Cold Spraying [J]. | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY , 2018 , 18 (4) : 2657-2664 . |
| MLA | Yao, Hai-Long et al. "MD Simulation on Collision Behavior Between Nano-Scale TiO2 Particles During Vacuum Cold Spraying" . | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 18 . 4 (2018) : 2657-2664 . |
| APA | Yao, Hai-Long , Yang, Guan-Jun , Li, Chang-Jiu . MD Simulation on Collision Behavior Between Nano-Scale TiO2 Particles During Vacuum Cold Spraying . | JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY , 2018 , 18 (4) , 2657-2664 . |
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Abstract ：
A novel structure of yttria stabilized zirconia coatings was developed in this study by a newly laminar plasma spraying technology in atmospheric environment. The unique microstructures of coatings showed the multi island protrusions feature at the top surface, quasi-columnar structures along the cross-section distributed as a certain interval and hybrid droplet/vapor deposited structures at the fracture surface. The distributions of particle velocity and surface temperature along the axial direction of long laminar plasma jet were investigated and compared with other plasma spraying methods. The effects of different microstructures to thermal conductivities comparing with other current plasma spray methods were also demonstrated. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Laminar plasma jet Particles velocity Thermal conductivity Vapor deposition YSZ coatings
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| GB/T 7714 | Liu, Sen-Hui , Li, Cheng-Xin , Zhang, Hui-Yu et al. A novel structure of YSZ coatings by atmospheric laminar plasma spraying technology [J]. | SCRIPTA MATERIALIA , 2018 , 153 : 73-76 . |
| MLA | Liu, Sen-Hui et al. "A novel structure of YSZ coatings by atmospheric laminar plasma spraying technology" . | SCRIPTA MATERIALIA 153 (2018) : 73-76 . |
| APA | Liu, Sen-Hui , Li, Cheng-Xin , Zhang, Hui-Yu , Zhang, Shan-Lin , Li, Lu , Xu, Pan et al. A novel structure of YSZ coatings by atmospheric laminar plasma spraying technology . | SCRIPTA MATERIALIA , 2018 , 153 , 73-76 . |
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