Progress in Natural Science: Materials International This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Microstructure investigation and multicolor upconversion in Yb3+/Ln3+(Ln=Er/Tm/Ho) ions doped α-Sialon
Publication date: Available online 3 October 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Sang Hoon Jeong, Yuwaraj K. Kshetri, Seung Ho Kim, Sung Hun Cho, Soo W. LeeAbstractYb3+/Ln3+(Ln = Er/Tm/Ho)-α-sialon ceramics were fabricated by hot press sintering technique. Their microstructure and luminescent properties were studied by XRD, EDS, HRTEM and photoluminescence measurements. The results showed that the sintered ceramics consisted of α-Sialon with a trace amount of β-Sialon phase. The frequency upconversion and downconversion properties of Yb3+/Ln3+(Ln = Er/Tm/Ho)-α-Sialon ceram...
Source: Progress in Natural Science: Materials International - October 4, 2019 Category: Materials Science Source Type: research

Modelling of strain induced magnetic anisotropy in Au additive FePt thin films
Publication date: Available online 3 October 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Rajan Goyal, S. Lamba, S. AnnapoorniAbstractL10 ordering at low temperature and controlled grain size are prerequisites for the fabrication of magnetic recording media. This can be achieved by several methods such as addition, under layer or over layer of third element in FePt. In the present work, the kinetics of L10 ordering in the presence of immiscible element Au is investigated by varying the Au concentration at different annealing temperatures. The structural analysis shows that the Au additive not ...
Source: Progress in Natural Science: Materials International - October 4, 2019 Category: Materials Science Source Type: research

Theoretical investigation of Agn@(ZnS)42(n=6-16) using first principles: Structural, electronic and optical properties
In this study, first-principles calculations were used to investigate the structural, electronic, and optical properties of Agn@(ZnS)42 (n = 6-16) core-shell nanocomposites. The calculated results show significant even-odd oscillations in the structural stability, that is, Ag@ZnS nanostructures with an even number of Agn core atoms are relatively more stable than those with an odd number of core atoms. The second-order differences in the total energies (Δ2E) and the core-shell interaction energy Ecs indicate that a Ag12@(ZnS)42 nanostructure is the most stable configuration. A significant red shift was found in Agn@(Z...
Source: Progress in Natural Science: Materials International - October 4, 2019 Category: Materials Science Source Type: research

Effect of Ce addition on hot tearing behavior of AZ91 alloy
Publication date: Available online 1 October 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Wenjun Liu, Bin Jiang, QingshanYang, JianquanTao, Bo Liu, Fusheng PanAbstractA small amount of cerium (below 1.0 wt%) addition to AZ91 alloy have been investigated on the hot tearing susceptibility (HTS) at a cooling rate of 1.5Ks−1. The HTS increased to a maximum value with a cerium addition of 0.6 wt% and then decreased to a stable status as cerium was gradually added. Due to high chemical activity, cerium into the melts can react with aluminum to form an Al11Ce3 intermetallic compound. X–ray di...
Source: Progress in Natural Science: Materials International - October 3, 2019 Category: Materials Science Source Type: research

Bimetallic-organic coordination polymers to prepare N-doped hierarchical porous carbon for high performance supercapacitors
Publication date: Available online 26 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Danchen Fu, Zeyu Chen, Chuying Yu, Xiaolan Song, Wenbin ZhongAbstractSingle metal-organic coordination polymers have limited functions as precursors for porous carbon electrode materials. The construction of bimetallic organic coordination polymers can effectively utilize the advantages of each single metal-organic coordination polymer to improve the performance of the derived carbon materials. Herein, High performance nitrogen-doped porous carbon (BCFe–Ni) have been produced by directly carbonizing ...
Source: Progress in Natural Science: Materials International - September 26, 2019 Category: Materials Science Source Type: research

Sintering mechanism of Cu-9Al alloy prepared from elemental powders
Publication date: Available online 12 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Zhenghua Deng, Haiqing Yin, Cong Zhang, Guofei Zhang, Tong Zhang, ZiKui Liu, Haibao Wang, Xuanhui QuAbstractThe sintering behavior of Cu-9Al alloys prepared from die pressing of elemental powders was investigated. The experimental results and kinetic analysis showed the formation of three consecutive layers of Al2Cu, Al4Cu9, and AlCu phases, with Al2Cu appearing first in the initial solid phase sintering stage. A liquid phase formed in the intermediate stage, resulting from the eutectic reaction betwee...
Source: Progress in Natural Science: Materials International - September 13, 2019 Category: Materials Science Source Type: research

Photo-improved hydrogen evolution reaction activity of the Pt/CdS electrocatalyst
Publication date: Available online 12 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Yongsheng Fu, Jun Li, Jianguo LiAbstractThe effect of CdS content on the photo-induced improvement of hydrogen evolution reaction activity of the Pt/CdS electrocatalyst was investigated. Although the electrons transferred from CdS to Pt in the Pt/CdS electrocatalyst increased with the CdS content under illumination, the electrochemical active surface area of the Pt/CdS electrocatalyst decreased with the CdS content, resulting that the photo-induced improvement of hydrogen evolution reaction activity of...
Source: Progress in Natural Science: Materials International - September 12, 2019 Category: Materials Science Source Type: research

Down-conversion characteristics of Eu3+ doped M2Y2Si2O9 (M = Ba, Ca, Mg and Sr) nanomaterials for innovative solar panels
Publication date: Available online 10 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Suman Sheoran, Vachan Singh, Sitender Singh, Sonika Kadyan, Jasbir Singh, Devender SinghAbstractDown-conversion properties of Eu3+ doped M2Y2Si2O9 (M = Ba, Ca, Mg, Sr) phosphors have been investigated in detail. These phosphors were synthesized via the simple, fast and cost-effective sol-gel technique at a temperature of 950 °C. Color coordinates and emission color can be altered by the varying concentration of dopant ion in Ca2Y2Si2O9 phosphor. Optimum luminescence intensity was obtained when d...
Source: Progress in Natural Science: Materials International - September 12, 2019 Category: Materials Science Source Type: research

Improvement of tensile behaviours of a γ'-Co3(Al, W) strengthened polycrystalline Co-9Al-4.5W-4.5Mo-2Ta-0.02B alloy at room-and high-temperatures by doping Ce
Publication date: Available online 11 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Zhuolin Tao, Fei Zhong, Youxing Yu, Jiangbo ShaAbstractThe microstructures and tensile behaviours of cerium (Ce) doped polycrystalline Co-9Al-4.5W-4.5Mo-2Ta-0.02B alloys (doped 0.05 and 0.2 at.% Ce) at room temperature (RT) and 600–800 °C were investigated. In-suit tensile test under SEM was conducted to understand the deformation and damage mechanisms at RT. Aged at 800 °C for 50 h, the 0.05Ce alloy consisted of a Co solid-solution matrix (γ-CoSS) and nano-scale cuboidal γ′-Co3(Al, W) ...
Source: Progress in Natural Science: Materials International - September 12, 2019 Category: Materials Science Source Type: research

Characterization and application of Cu based superhydrophobic catalyst
Publication date: Available online 10 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Ramasamy Anbarasan, Shanmugam Palanikumar, Ayyadurai Anitha Devi, Ping-Hei Chen, Kuo Lun TungAbstractSuperhydrophobic (SH) Copper salt was prepared with the help of three different chemical etching agents and characterized by various analytical techniques like Fourier transform infrared (FTIR) spectroscopy, UV–visible spectroscopy, X-ray diffractogram (XRD), X-ray photoelectron spectroscopy (XPS), high resolution transmission electron microscopy (HRTEM) and scanning electron microscopy (SEM). The SH ...
Source: Progress in Natural Science: Materials International - September 10, 2019 Category: Materials Science Source Type: research

In vitro study of human endothelial progenitor cells behaviour on nitrided Ni-free Ti–27Nb alloy
Publication date: Available online 10 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Raluca Ion, Yvan Bédouin, Thierry Gloriant, Gladiola Andruseac, Doina-Margareta Gordin, Anisoara CimpeanAbstractA superelastic Ni-free Ti–27Nb alloy has been synthesized and gas nitrided at high temperature to investigate its suitability for vascular implant applications. The cellular responses of human endothelial progenitor cells (EPCs) to both bare and nitrided Ti–27Nb alloy have been analyzed using Live/Dead staining, MTT assay, fluorescence microscopy and ELISA technique, as well as NiTi allo...
Source: Progress in Natural Science: Materials International - September 10, 2019 Category: Materials Science Source Type: research

Film thickness effects on nanorods organic films of azo quinoline derivatives for optical applications
Publication date: Available online 4 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): A.Z. Mahmoud, A.A.A. Darwish, Saleem I. QashouAbstractThe effect of film thickness on the structural and optical properties of bisbenzimidazo [2,1-a:2′,1′-a′] anthrax [2,1,9-def:6,5,10-d′e′f′] diisoquinoline-10,21-dione (BI-diisoQ) films was carried out. The morphology of BI-diisoQ film showed a definite shape of a nanorod with a length of around 5 μm and a diameter of approximately 20 nm. Also, X-ray diffraction patterns demonstrated that BI-diisoQ thin films are characterized by a mix...
Source: Progress in Natural Science: Materials International - September 6, 2019 Category: Materials Science Source Type: research

Ag/graphene composite based on high-quality graphene with high electrical and mechanical properties
Publication date: Available online 1 September 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Yanpeng Yang, Yunjie Ping, Youning Gong, Zhongchi Wang, Qiang Fu, Chunxu PanAbstractA simple and effective process has been reported to prepare the silver (Ag)/graphene composite with excellent mechanical and electrical properties based on high-quality graphene (HQG). The HQG was fabricated via hot pressing of reduced graphene oxide (RGO) from chemical exfoliation, while the Ag/HQG composite was obtained by using spark plasma sintering (SPS) treatment under high temperature (1500 °C) and moderate pre...
Source: Progress in Natural Science: Materials International - September 1, 2019 Category: Materials Science Source Type: research

Rapid reactive synthesis of TiAl3 intermetallics by thermal explosion and its oxidation resistance at high temperature
Publication date: Available online 28 August 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Xinyang Jiao, Xiaoping Cai, Gao Niu, Xuanru Ren, Xueqin Kang, Peizhong FengAbstractPorous TiAl3 intermetallics were synthesized from Ti-75 at.% Al elemental powder mixtures using an energy-saving and rapid reactive method of thermal explosion (TE). The results demonstrated that the actual temperature of the compact climbed rapidly from 673 °C to 1036 °C within 24 s, indicating that an obvious TE reaction occurred during sintering process. The video graphs suggested that the TE in Ti–Al system be...
Source: Progress in Natural Science: Materials International - August 29, 2019 Category: Materials Science Source Type: research

Synthesis of the 3D porous carbon-manganese oxide (3D-C@MnO) nanocomposite and its supercapacitor behavior study
Publication date: Available online 28 August 2019Source: Progress in Natural Science: Materials InternationalAuthor(s): Rakesh K. Sahoo, Arya Das, Saurabh Singh, Damin Lee, Saroj K. Singh, Rajaram S. Mane, Je Moon Yun, Kwang Ho KimAbstractA 3D porous carbon-manganese oxide (3D-C@MnO) nanocomposite is successfully synthesized via a thermal plasma deposition method. The chemical bonds and compositions, phase structures, surface morphologies, etc. of as-obtained 3D-C@MnO nanocomposite were characterized by the various equipment, such as X-ray diffractometer, X-ray photoelectron spectroscopy, and electron microscopes. The elec...
Source: Progress in Natural Science: Materials International - August 29, 2019 Category: Materials Science Source Type: research