Yu-Kun Lu
Jilin University
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Publication
Featured researches published by Yu-Kun Lu.
Journal of Coordination Chemistry | 2009
Shu-Yun Shi; Yan Chen; Bo Liu; Yu-Kun Lu; Jianing Xu; Xiao-Bing Cui; Ji-Qing Xu
Two supramolecular compounds [Fe(2,2′-bipy)3]2[ (Cl)] · 4.67H2O (1) and [Ni(enMe)3]2[ (Cl)] · 2H2O (2) have been prepared under hydrothermal conditions and characterized by elemental analyses, IR, TGA, ESR, magnetic properties, and single crystal X-ray diffraction analyses. Crystal data for 1: tetragonal, I-42d, a = 13.6043(19), b = 13.6043(19), c = 50.544(10) Å, V = 9354(3) Å3; for 2: hexagonal, P6(3)/m, a = 12.6046(12), b = 12.6046(12), c = 22.563(5) Å, V = 3104.4(7) Å3. Compound 1 is constructed from cations [Fe(2,2′-bipy)3]3+, polyoxovanadates [ (Cl)]6−, and water molecules. Compound 2 is composed of cations [Ni(enMe)3]2+, clusters [ (Cl)]8−, and water molecules. There are hydrogen-bonding interactions between polyoxovanadates, organic moieties, and/or water molecules in 1 and 2, forming different 2-D layered networks.
Surface Engineering | 2010
R.G. Li; J. An; Yu-Kun Lu
Abstract An attempt has been made to enhance the tribological properties of Mg–11Y–2·5Zn alloy by laser surface melting with a 6 kW continuous wave CO2 laser processing system. The microstructure and microhardness of the surface layer on Mg–11Y–2·5Zn alloy were characterised using X-ray diffractometer, laser microscopy and Vickers hardness indentation. The laser surface melted zone consisted of fine dendrites and coarse dendrites growing epitaxially from the liquid/solid interface. Microhardness was improved from 69–70 HV for the substrate to 77–83 HV for the fine dendritic microstructure. The friction and wear characteristics were investigated using a pin on disc apparatus. The coefficient of friction curve of the laser surface melted specimen was similar to that of the untreated specimen. Laser surface melted Mg–11Y–2·5Zn alloy exhibited good wear resistance, which has been explained by refinement of microstructure in the melted zone. Four wear mechanisms including abrasion, delamination, thermal softening and melting, have been observed.
Wear | 2008
J. An; R.G. Li; Yu-Kun Lu; C.M. Chen; Ying Xu; X. Chen; Limin Wang
Materials Characterization | 2008
R.G. Li; Ying Xu; W. Qi; J. An; Yu-Kun Lu; Zhanyi Cao; Y.B. Liu
Journal of Solid State Chemistry | 2007
Jian Liu; Jianing Xu; Ya-Bing Liu; Yu-Kun Lu; Jiang-Feng Song; Xiao Zhang; Xiao-Bing Cui; Ji-Qing Xu; Tie-Gang Wang
Journal of Molecular Structure | 2006
Ya-Bing Liu; Xiao-Bing Cui; Ji-Qing Xu; Yu-Kun Lu; Jian Liu; Qing-Bin Zhang; Tie-Gang Wang
Journal of Solid State Chemistry | 2009
Yu-Kun Lu; Xiao-Bing Cui; Yan Chen; Jianing Xu; Qing-Bin Zhang; Ya-Bing Liu; Ji-Qing Xu; Tie-Gang Wang
Wear | 2006
J. An; X.X. Shen; Yu-Kun Lu; Y.B. Liu
Journal of Solid State Chemistry | 2006
Ya-Bing Liu; Li-Mei Duan; Xiao-Mei Yang; Ji-Qing Xu; Qing-Bin Zhang; Yu-Kun Lu; Jian Liu
Inorganic Chemistry Communications | 2006
Qing-Bin Zhang; Yu-Kun Lu; Ya-Bing Liu; Jing Lu; Ming-Hui Bi; Jie-Hui Yu; Tie-Gang Wang; Ji-Qing Xu; Jian Liu