Experimental research on residual carbon of Y211 inclusions in a melt-textured Y123/Y211 composite

Xu, Jimin; Zhang, Fei; Yuan, Xiaoyang; Zhang, Cuiping

doi:10.1080/10426914.2016.1257803

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…The precursor powders include YBaCuO 7−x and Y 2 BaCuO 5 powders. The former powders are used to grow the superconducting domain while the later nonsuperconducting powders are acted as pinning inclusions [ 22 ]. It can be found that numerous microcrystal defects and artificially doped Y 2 BaCuO 5 particles distributed in the superconducting matrix.…”

Section: Structural Scheme Of the Contactless Mpt Modementioning

confidence: 99%

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Liu

et al. 2021

J Supercond Nov Magn

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Mechanical power transmission (MPT) components are almost indispensable for every engineering equipment with motions. In order to satisfy some rigorous requirements, such as contamination free and zero leakage in the mixing process of biomedical solutions, a contactless MPT mode was proposed in this study based on the high- T c superconducting flux pinning mechanism. It makes the stirring container with the driven part inside that can be totally isolated from the external environment. The physical principle of superconducting flux pinning effect was discussed firstly to explore a feasible structural scheme, which can completely restrain all the six degrees of freedom (DOFs) by the linkage of magnetic flux lines. Then, a measurement device was established to verify and investigate the proposed contactless MPT mode. The motion can be transferred synchronously from the superconducting driving part to the permanent magnet driven part since they are unified as an integrity through the pinned flux lines. The influence of driving speed, cooling clearance, and magnet arrangement on the transmitted torque was analyzed. The verified contactless MPT mode also has the advantages of self-stability and overload protection, which can avoid the drawbacks of traditional permanent magnetic transmission mode.

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Section: Structural Scheme Of the Contactless Mpt Modementioning

confidence: 99%

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Liu

et al. 2021

J Supercond Nov Magn

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“…Sm 1 Ba 2 Cu 3 O 7-x seed is placed on the center of the sample surface to induce crystal growth. 25 CeO 2 can react with Y211 and make Y211 particles more refined. 26 Through a long time of crystal growth in muffle furnace and oxygen permeation process, YBCO bulk superconductors can be obtained successfully.…”

Section: Three Ybco Bulk Superconductors For Experimentsmentioning

confidence: 99%

“…Additionally, there is an approximate positive correlation between critical current density and T c . 25 Levitation force of sample can be higher due to a higher T c value. From this viewpoint, it can also be deduced that superconducting performance of sample B is the best.…”

Section: Three Ybco Bulk Superconductors For Experimentsmentioning

confidence: 99%

Fundamental tribological experiments and antifriction design of novel superconducting tilting pad bearing for liquid rocket engine

Jia

Zhang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part J:

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Novel superconducting tilting pad bearing can realize the compound of superconducting magnetic force and hydrodynamic fluid-film force in liquid rocket engine and possesses the advantages of larger bearing capacity and higher stiffness. The indispensable small operational clearance for the bearing would possibly cause rubbing phenomena between superconducting stator and magnet rotor under impact loads. Three Y1.8Ba2.4Cu3.4Ox bulk superconductors with different crystal domains are used to study the dry friction coefficients between superconductor and neodymium iron boron (NdFeB) magnet with nickel coating. In order to improve the fundamental tribological performance of the novel bearing, upper surface of modified superconducting tilting pad is covered by thin impregnated graphite and the nickel coating of magnet is replaced by chromium coating. Pin-on-disc experimental results indicate that the antifriction design method is effective and safe for liquid rocket engine. This study can promote the application process of novel superconducting bearing in a new generation of liquid rocket engine in China.

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The suppression of magnetic force decay in a superconductor-magnet levitation system by forced high-frequency small-amplitude vibration

Liu

et al. 2023

Cryogenics

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Experimental research on residual carbon of Y211 inclusions in a melt-textured Y123/Y211 composite

Cited by 6 publications

References 23 publications

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Contactless Mechanical Power Transmission Through the High-Tc Superconducting Pinning Effect

Fundamental tribological experiments and antifriction design of novel superconducting tilting pad bearing for liquid rocket engine

The suppression of magnetic force decay in a superconductor-magnet levitation system by forced high-frequency small-amplitude vibration

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