Rare Metals

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Dual-wavelength dual-indicator catalytic kinetic spectrophotometry for determination of trace Ru(III)
Rare Metals - Tập 32 - Trang 605-608 - 2013
Hai-Yan Chen, Yu-Jing Chen, Ming Zhang
A new dual-wavelength dual-indicator catalytic kinetic spectrophotometric method for the determination of trace Ru(III) was studied. This method was based on Ru(III)-catalyzing oxidation of Arsenazo I and indigo carmine by potassium bromate in sulfuric acid. The absorbances of the catalytic and noncatalytic systems were measured at 510 and 610 nm, respectively. Under the optimum conditions, the li...... hiện toàn bộ
Phase composition, morphology and element contents of micro-arc oxidation ceramic coatings on Ti–6Al–4V alloy under different calcination conditions
Rare Metals - Tập 35 - Trang 836-840 - 2016
Guo-Dong Hao, Xue-long Hao, Zu-Fang Zhu
Compound ceramic coatings with the main crystalline of Al2TiO5 (in the as-prepared coating without treatment) were prepared in situ on the surface Ti–6Al–4V alloy by means of pulsed bipolar micro-arc oxidation in NaAlO2 solution. For the purpose of studying the anti-oxidation properties of the samples, the coated samples treated in argon and the as-coated samples were calcined in air at 1000 °C. A...... hiện toàn bộ
Two-dimensional vanadium nanosheets as a remarkably effective catalyst for hydrogen storage in MgH2
Rare Metals - Tập 40 Số 11 - Trang 3195-3204 - 2021
Lu, Zhi-Yu, Yu, Hai-Jie, Lu, Xiong, Song, Meng-Chen, Wu, Fu-Ying, Zheng, Jia-Guang, Yuan, Zhi-Fei, Zhang, Liu-Ting
Magnesium hydride (MgH2), which possesses high hydrogen density of 7.6 wt%, abundant resource and non-toxicity, has captured intense attention as one of the potential hydrogen storage materials. However, the practical application of Mg/MgH2 system is suffering from high thermal stability, sluggish absorption and desorption kinetics. Herein, two-dimensional (2D) vanadium nanosheets (VNS) were ...... hiện toàn bộ
Mechanism of fracture toughness property of aging-hardening eutectic Al–Si alloys
Rare Metals - Tập 42 - Trang 2795-2800 - 2019
Tao Hong, Gang Zhao
The microstructures and fracture toughness properties of the aged Al–12.5Si–0.7Mg alloy plate were studied by transmission electron microscopy (TEM), optical microscopy (OM), tensile, and fracture toughness (the fracture toughness value, KIC) testing. The mechanism of fracture toughness properties of the alloys was discussed for different sizes of silicon particle and aging precipitates. The resul...... hiện toàn bộ
Enhanced thermoelectric performance of CoSbS0.85Se0.15 by point defect
Rare Metals - Tập 37 - Trang 326-332 - 2017
Shan-Shan Zhang, Ding-Feng Yang, Nusrat Shaheen, Xing-Chen Shen, Dan-Dan Xie, Yan-Ci Yan, Xu Lu, Xiao-Yuan Zhou
In this study, we report the effect of Zn doping on the thermoelectric properties of Co1−x Zn x SbS0.85Se0.15 solid solutions (x = 0, 0.02, 0.05, 0.08). The results show the dimensionless figure of merit (zT) increases from 0.17 to 0.34 at 875 K for Co0.95Zn0.05SbS0.85Se0.15 sample, due to the noticeable decrease in the lattice thermal conductivity...... hiện toàn bộ
Electrochemical characteristics of amorphous MgTi x Ni (x = 0, 0.1, and 0.2) hydrogen storage alloys
Rare Metals - - 2010
Suqin Liu, Wenjuan Zhao, Kelong Huang, Hongfeng Huang
Dynamic response and plastic deformation behavior of Ti–5Al–2.5Sn ELI and Ti–8Al–1Mo–1V alloys under high-strain rate
Rare Metals - - 2014
Yanling Wang, Songxiao Hui, Rui Liu, Wenjun Ye, Yang Yu, Ravil Kayumov
Construction of high-performance magnetic sensor based on anisotropic magnetoresistance Ta/MgO/NiFe/MgO/Ta film
Rare Metals - Tập 40 - Trang 2026-2032 - 2021
Yue-Dou Pan, Ling-Ran Yu, Lei Wang, Tao Chen, Xin-Ya Wei, Rong-Gui Zhu, Jian-Wei Li, Chun Feng, Guang-Hua Yu
The anisotropic magnetoresistance film is an important core material for developing the magnetic sensors. Here, Ta(5)/MgO(3)/NiFe(10)/MgO(3)/Ta(3) multilayers (in nanometer) were prepared by magnetron sputtering and further applied to construct a sensor element by combining with the Wheatstone bridge. The 1/f noise of the sensor element was greatly reduced by three orders of magnitude after anneal...... hiện toàn bộ
Mechanical properties and fracture behaviors on 6061 aluminum alloy under shear stress state
Rare Metals - Tập 30 - Trang 550-554 - 2011
Hao Zhu, Fangjuan Qi
The mechanical properties and fracture behaviors of 6061 aluminum alloy were investigated by the tensile shear tests and in-situ tensile shear tests with tensile shear specimen devised. The results indicate that many slip bands parallel to tensile direction are produced on the surfaces of the specimens. With shear strain rates increasing, the shear yield stress and shear ultimate stress of 6061 al...... hiện toàn bộ
Kinetics of simultaneous leaching of Ag and Pb from hydrometallurgical zinc residues by chloride
Rare Metals - Tập 31 - Trang 402-409 - 2012
Yali Zhang, Xianjin Yu, Xiaobin Li
The leaching kinetics of silver and lead simultaneously from zinc residue by chloride was investigated. The effects of stirring speed, temperature, sodium chloride concentration, particle size and liquid/solid ratio on Ag and Pb dissolution in sodium chloride were studied. It was determined that the dissolution rates increased with increasing sodium chloride concentration, temperature and decreasi...... hiện toàn bộ
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