Institution
Harbin Engineering University
Education•Harbin, Heilongjiang, China•
About: Harbin Engineering University is a education organization based out in Harbin, Heilongjiang, China. It is known for research contribution in the topics: Control theory & Microstructure. The organization has 31149 authors who have published 27940 publications receiving 276787 citations. The organization is also known as: HEU.
Papers published on a yearly basis
Papers
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TL;DR: A facile strategy to synergistically increase the number of active edge sites and the conductivity of MoS2 and decrease the resistance ofMoS2-based electrocatalysts, which exhibit excellent catalytic activity for hydrogen evolution reactions.
Abstract: Nanostructured MoS2 is very promising as an electrocatalyst for hydrogen evolution due to a greater number of active edge sites. However, a very large resistance between basal planes decreases the overall efficiency of hydrogen evolution, and greatly limits its application in industry. Herein we develop a facile strategy to synergistically increase the number of active edge sites and the conductivity of MoS2. MoS2 nanosheet arrays can be grown vertically on a carbon fiber cloth (CFC) substrates by a facile strategy. On the one hand, ammonium fluoride in the reaction system could effectively etch the inert basal plane of the MoS2 nanosheets, leading to the formation of pits in the inert basal plane of the MoS2 nanosheets. Thereby the number of active edge sites is significantly increased. On the other hand, the vertical growth of MoS2 nanosheet arrays on CFCs can significantly decrease the resistance of MoS2-based electrocatalysts. As a result, the MoS2-based electrocatalysts exhibit excellent catalytic activity for hydrogen evolution reactions, with a small Tafel slope and a large cathodic current density. Moreover, the CFC can be repeatedly utilized as a template to grow ultrathin MoS2 nanosheet arrays for HERs. The excellent activity and recyclable utilization, as well as mass production, indicate that the composite has promising applications in industry.
112 citations
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TL;DR: In this article, the phase composition, microstructure, micro-hardness and wear resistance of Ni-Cr-Co-Ti-V high entropy alloy coating were studied in detail, and the worn surface morphologies showed that the worn mechanism of as-cladded and as-remelted high-entropy alloy coatings are adhesive wear.
Abstract: An attempt, combined with the technologies of laser cladding and laser remelting, has been made to develop a Ni-Cr-Co-Ti-V high entropy alloy coating. The phase composition, microstructure, micro-hardness and wear resistance (rolling friction) were studied in detail. The results show that after laser remelting, the phase composition remains unchanged, that is, as-cladded coating and as-remelted coatings are all composed of (Ni, Co)Ti2 intermetallic compound, Ti-rich phase and BCC solid solution phase. However, after laser remelting, the volume fraction of Ti-rich phase increases significantly. Moreover, the micro-hardness is increased, up to ∼900 HV at the laser remelting parameters: laser power of 1 kW, laser spot diameter of 3 mm, and laser speed of 10 mm/s. Compared to the as-cladded high-entropy alloy coating, the as-remelted high-entropy alloy coatings have high friction coefficient and low wear mass loss, indicating that the wear resistance of as-remelted coatings is improved and suggesting practical applications, like coatings on brake pads for wear protection. The worn surface morphologies show that the worn mechanism of as-cladded and as-remelted high-entropy alloy coatings are adhesive wear.
112 citations
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TL;DR: In this paper, a robust weakly compressible SPH method is applied to simulate violent interactions between free surface and rigid body to calculate forces and torques on rigid body is improved for higher accuracy.
112 citations
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TL;DR: The rigorous stability analysis based Lyapunov’s method demonstrates the uniform ultimate boundedness of all the tracking errors in the closed-loop system and the effectiveness of the proposed controllers.
112 citations
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TL;DR: In this paper, the effects of grain size on the strength and ductility of Mg alloys are summarized and fine-grained Mg-alloys with high strength and high ductility developed by various severe plastic deformation technologies and improved traditional deformation methods are introduced.
Abstract: Magnesium (Mg) alloys, as the lightest metal engineering materials, have broad application prospects. However, the strength and ductility of traditional Mg alloys are still relativity low and difficult to improve simultaneously. Refining grain size via the deformation process based on the grain boundary strengthening and the transition of deformation mechanisms is one of the feasible strategies to prepare Mg alloys with high strength and high ductility. In this review, the effects of grain size on the strength and ductility of Mg alloys are summarized, and fine-grained Mg alloys with high strength and high ductility developed by various severe plastic deformation technologies and improved traditional deformation technologies are introduced. Although some achievements have been made, the effects of grain size on various Mg alloys are rarely discussed systematically and some key mechanisms are unclear or lack direct microscopic evidence. This review can be used as a reference for further development of high-performance fine-grained Mg alloys.
111 citations
Authors
Showing all 31363 results
Name | H-index | Papers | Citations |
---|---|---|---|
Peng Shi | 137 | 1371 | 65195 |
Lei Zhang | 130 | 2312 | 86950 |
Yang Liu | 129 | 2506 | 122380 |
Tao Zhang | 123 | 2772 | 83866 |
Wei Zhang | 104 | 2911 | 64923 |
Wei Liu | 102 | 2927 | 65228 |
Feng Yan | 101 | 1041 | 41556 |
Lianzhou Wang | 95 | 596 | 31438 |
Xiaodong Xu | 94 | 1122 | 50817 |
Zhiguo Yuan | 93 | 633 | 28645 |
Rong Wang | 90 | 950 | 32172 |
Jun Lin | 88 | 699 | 30426 |
Yufeng Zheng | 87 | 797 | 31425 |
Taihong Wang | 84 | 279 | 25945 |
Mao-Sheng Cao | 81 | 314 | 24046 |