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Tensile deformation behavior of a solution-treated Ti–33Nb–4Sn alloy with a dual β and α" phases under cyclic loading-unloading
Publication date: Available online 22 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Wen Ma, Shun Guo, Guanglei Liu, Qingkun Meng, Rui Luo, Dongsheng Li, Ching-Tun Peng, Xiaonong ChengAbstractThe cyclical tensile deformation behavior of a solution-treated (ST) Ti–33Nb–4Sn alloy with a dual β and α" phases was investigated in this study. Experimental results indicated that the ST Ti–33Nb–4Sn alloy exhibited different deformation behavior during two different loading-unloading cycles, and that the deformation behavior was closely related to the characteristics of stress-induced m...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Structure design, controllable synthesis, and application of metal-semiconductor heterostructure nanoparticles
Publication date: Available online 22 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Yuepeng Lv, Sibin Duan, Rongming WangAbstractMetal-semiconductor heterostructure nanoparticles (NPs) have attracted much interest and extensively been investigated due to their promising potentials in the fields of catalysis, energy conversion and storage. Due to the synergistic effect and coupling effect between metal and semiconductor, designing and controlling the interface structure of metal-semiconductor NPs and understanding the structure-property relationship have great significance for optimizing...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Regulating microstructures and mechanical properties of Al–Fe–Ni alloys
Publication date: Available online 22 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Zeyu Bian, Yingtao Liu, Shihan Dai, Zhe Chen, Mingliang Wang, Dong Chen, Haowei WangAbstractMechanical properties of Al–Fe–Ni eutectic alloys have been investigated based on the nominal mass fraction of eutectic phase, and the added Fe/Ni mass ratio. The X-Ray diffraction, scanning electron microscopy equipped with energy dispersive spectroscopy and transmission electron microscope have been used to identify phase composition, characterize microstructure and crystal structure of Al9FeNi phase, respec...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Influence of Al doping on the crystal structure, optical properties, and photodetecting performance of ZnO film
This study is motivated by the absence of detail reports concerning the orbital states inducing the optical bandgap (Eg) blueshift. Besides, the influences of Al on the possible modification of point defect and the photodetecting performance are highlighted to offer guidelines for better development in ZnO-based photodetector. It was found that the Al doping reduced the grain size. The doping increased the lattice parameters and slightly decreased the local-symmetry distortion at ZnO4. From the absorbance spectra, the doping increased Eg of ZnO film (3.28–3.36 eV), induced by the Burstein-Moss effect. From the density-f...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Facile synthesis of FeFe2O4 magnetic nanomaterial for removing methylene blue from aqueous solution
Publication date: Available online 22 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Van-Phuc Dinh, Ngoc Quyen Tran, Nguyen-Que-Tran Le, Quang-Huy Tran, Trinh Duy Nguyen, Van Tan LeAbstractA facile and simple chemical precipitation method was utilized to synthesize FeFe2O4 magnetic nanomaterial for removing methylene blue (MB) from aqueous solution. Characterizations of this material were examined by using XRD, SEM, FT-IR, TGA-DTG and BET methods. Factors affecting the uptake of methylene blue, including pH, adsorption time, and MB initial concentration were also studied. The measured da...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Effect of crystal field on the formation and diffusion of oxygen vacancy at anatase (101) surface and sub-surface
Publication date: Available online 22 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Wenjin Yin, Bo Wen, Qingxia Ge, Xiaolin Wei, Gilberto Teobaldi, Limin LiuAbstractThe intrinsic oxygen vacancy (Ov) in TiO2 is a vital topic of semiconductor materials. Here, we use the first-principles calculations to explore the formation and diffusion properties of Ov at anatase (101) slab, combined with the crystal filed theory. The calculated result shows that Ov at subsurface is not only more stable than that at surface, but also prefers to cluster together at subsurface. The stability of Ov at subs...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

Beneficial clock-rolling cycles on the microstructure uniformity of {111} grains in tantalum sheets
Publication date: Available online 23 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Jialin Zhu, Shifeng Liu, Shuai Yang, Yahui Liu, Adrien ChapuisAbstractControlling the texture of tantalum sheets is of critical importance to fabricate good sputtering targets. In the present study two tantalum sheets were produced by clock rolling to 70% thickness reduction in 1 or 2 cycles. The results show that the stored energy and grain subdivision within the {111} grains {<111>//normal direction (ND)} after 1 cycle are significantly higher than those after 2 cycles, leading to fast recrystalliz...
Source: Progress in Natural Science: Materials International - January 23, 2020 Category: Materials Science Source Type: research

A brief introduction to the selective laser melting of Ti6Al4V powders by supreme-speed plasma rotating electrode process
Publication date: Available online 21 January 2020Source: Progress in Natural Science: Materials InternationalAuthor(s): Yang Liu, Xiao-Hao Zhao, Yun-Jin Lai, Qing-Xiang Wang, Li-Ming Lei, Shu-Jin LiangAbstractIn the present study, Ti6Al4V spherical powders were prepared by supreme-speed plasma rotating electrode process and the particle size fit log-normal distribution. The average diameter of the powders was successfully determined by a model developed in this work, suggesting that the particle size distribution is mainly affected by the rotating speed. The log-normal distribution factor of the particle size distribution...
Source: Progress in Natural Science: Materials International - January 22, 2020 Category: Materials Science Source Type: research

Annealing temperature-dependent electrochemical properties of Aeroxide P25 TiO2 nanoparticles as anode material for lithium storage
This study provides an instance of optimizing the textural properties of metal oxides for advanced LIB anode material applications.Graphical abstract (Source: Progress in Natural Science: Materials International)
Source: Progress in Natural Science: Materials International - January 17, 2020 Category: Materials Science Source Type: research

Optical sensing of explosives in wastewater by competitive complexation
Publication date: Available online 14 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Jiaxin Niu, Hong Chi, Pingxin Gao, Zongkuan Liu, Xiaohu Yin, Zhaolin GuAbstractA facile strategy for optical sensing of explosives with the assistance of 1,3,5-Triazine-2,4,6-triamine (MEL) in aqueous solution is proposed. Upon exposure to MEL, the electron-sufficient amino group in MEL was prone to form complexes with electron-deficient nitro group in explosives. The interaction could be tuned by the amount of MEL to fully consumed nitro-contained explosives dissolved in wastewater, thus prevented the ...
Source: Progress in Natural Science: Materials International - December 15, 2019 Category: Materials Science Source Type: research

Optoelectronic and electrochemical behaviour of γ-CuI thin films prepared by solid iodination process
Publication date: Available online 12 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Karthik Kumar Chinnakutti, Vengatesh Panneerselvam, Durai Govindarajan, Ajith kumar Soman, Kuppusami Parasuraman, Shyju Thankaraj SalammalAbstractA simple and efficient solid iodination method has been proposed for the fabrication of p-type γ-CuI thin films. The structural, morphological, optical, electrical and electrochemical properties have been investigated in order to serve as an effective hole-transporting layer in solid-state solar cells. The fabricated films exhibited p-type conductivity with r...
Source: Progress in Natural Science: Materials International - December 13, 2019 Category: Materials Science Source Type: research

Detecting MoS2 and MoSe2 with optical contrast simulation
Publication date: Available online 12 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Xiaohe Zhang, Hiroyo Kawai, Jing Yang, Kuan Eng Johnson GohAbstractOptical imaging is a promising method to identify and locate 2D materials efficiently and non-invasively. By putting a 2D material on a substrate, the nanolayer will add to an optical path and create a contrast to the case when the nanolayer is absent. This optical contrast imaging can be used to identify the 2D material and its number of layers. To make the optical imaging process in the laboratories an effective tool, Fresnel Law as a ...
Source: Progress in Natural Science: Materials International - December 13, 2019 Category: Materials Science Source Type: research

Effects of Sr addition on the microstructures and mechanical properties of in-situ ZrB2 nanoparticles reinforced AlSi9Cu3 composites
Publication date: Available online 11 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Renfa Ding, Yutao Zhao, Ran Tao, Zhihao Zhao, Liang Liang, Jili Wu, Xizhou Kai, Min WangAbstractThe effects of Sr addition on the microstructure and mechanical properties of in-situ ZrB2 nanoparticles reinforced AlSi9Cu3 composites synthesized via direct melt reaction were systematically investigated. The addition of Sr could modify the morphology of eutectic silicon particles and refine the second dendrite arm spacing of α-Al dendrites. Alternatively, the ZrB2 nanoparticles were also refined and distr...
Source: Progress in Natural Science: Materials International - December 13, 2019 Category: Materials Science Source Type: research

Electrocatalytic oxidation of ethanol and ethylene glycol on bimetallic Ni and Ti nanoparticle-modified indium tin oxide electrode in alkaline solution
Publication date: Available online 11 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Yanan Yu, Miaomiao Zhai, Jingbo HuAbstractBimetallic Ni and Ti nanoparticle-modified indium tin oxide electrode (Ni–Ti NPs/ITO) were prepared by a two-step ion implantation method, and their electrocatalytic activity toward the oxidation of ethanol and glycol was evaluated. The ion-implantation method is simple, low-cost and environmental friendly without the use of any binder. The Ni–Ti NPs/ITO electrode were characterized by scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-r...
Source: Progress in Natural Science: Materials International - December 13, 2019 Category: Materials Science Source Type: research

Systematically controlled synthesis of rGO/nano-MnOx materials for supercapacitors
Publication date: Available online 10 December 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Xiaoyu Zhao, Haocun Yang, Yongdan Hou, Lemuel Gbologah, Liang Zhu, Yanfei WangAbstractThe effects of hydrothermal production conditions on crystal forms, morphology and electrochemical performance of in situ reduced graphene oxide/manganese oxides (rGO/MnOx) hybrid electrode materials were studied. The XRD/SEM results show that the ratio of precursors, reaction temperature and type of solvent significantly affected the crystal form obtained and nano-structure of MnOx. Varied precursor ratios of KMnO4:GO...
Source: Progress in Natural Science: Materials International - December 12, 2019 Category: Materials Science Source Type: research