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1. The effect of high-temperature creep on buckling behaviour of aluminium grade EN6082AW T6 columns

Author:
Torić, Neno; Boko, Ivica; Burgess, Ian W.; Divić, Vladimir
Source:
Fire safety journal 2020 v.112 pp. 102971
ISSN:
0379-7112
Subject:
aluminum; aluminum alloys,   etc   ; fire resistance; temperature;     Show all 4 Subjects
Abstract:
... The paper presents an experimental study that investigates the influence of high-temperature creep on reduction of the buckling load capacity of aluminium grade EN6082AW T6 columns. The study was performed by performing constant-temperature capacity and creep tests on 17 column specimens of approximately 2.6 m length. A total of eight capacity tests and nine creep tests were carried out. Results o ...
DOI:
10.1016/j.firesaf.2020.102971

2. Nonclassical nucleation towards separation and recycling science: Iron and aluminium (oxy)(hydr)oxides

Author:
Lukić, Miodrag J.; Gebauer, Denis; Rose, Andrew
Source:
Current opinion in colloid & interface science 2020
ISSN:
1359-0294
Subject:
aluminum hydroxide; aluminum oxide,   etc   ; iron oxyhydroxides; recycling;     Show all 4 Subjects
Abstract:
... Separation, analysis and recycling technologies are of high interest for our modern societies, where colloidal iron and aluminium (hydr)oxides have important applications. However, there are significant gaps in the fundamental understanding of how these phases form in real systems. Classical nucleation theory cannot account for many experimental observations, and there is a dichotomy between the c ...
DOI:
10.1016/j.cocis.2020.03.010

3. Probing the Local Bonding at the Pt/γ-Al₂O₃ Interface

Author:
Ayoola, Henry O.; Bonifacio, Cecile S.; Zhu, Qing; Li, Cheng-Han; House, Stephen D.; Kas, Joshua J.; Jinschek, Joerg; Rehr, John J.; Saidi, Wissam A.; Yang, Judith C.
Source:
Journal of physical chemistry 2020 v.124 no.18 pp. 9876-9885
ISSN:
1932-7455
Subject:
aluminum; aluminum oxide,   etc   ; catalysts; models; oxygen; physical chemistry; platinum; spectroscopy;     Show all 8 Subjects
Abstract:
... Metal–support interactions significantly affect the performance of heterogeneous catalysts, of which Pt supported on γ-Al₂O₃ is one of the most widely used. Characterizing the bonding of Pt on the γ-Al₂O₃ surface is key to fully understanding the catalyst–support interaction. Herein aberration-corrected and monochromated scanning transmission electron microscopy-based electron energy-loss spectros ...
DOI:
10.1021/acs.jpcc.9b12029

4. Mimicking layer inversion in solid-liquid fluidized beds in narrow tubes

Author:
Cúñez, Fernando David; Franklin, Erick M.
Source:
Powder technology 2020 v.364 pp. 994-1008
ISSN:
0032-5910
Subject:
aluminum; aluminum oxide,   etc   ; cameras; fluid mechanics; fluidized beds; mathematical models;     Show all 6 Subjects
Abstract:
... This paper investigates experimentally and numerically the dynamics of solid particles during the layer inversion of binary solid-liquid fluidized beds in narrow tubes. Layer inversion can happen in solid classifiers and biological reactors, where different solid particles coexist and segregation by diameter and density occurs. The fluidized beds were formed in a 25.4 mm-ID pipe and consisted of a ...
DOI:
10.1016/j.powtec.2019.09.089

5. NMR Crystallography of Aluminum Carbide: Impurities in the Reagent and Improved ²⁷Al NMR Tensors

Author:
Marti, Robert M.; Sarou-Kanian, Vincent; Moran, Colton M.; Walton, Krista S.; Hayes, Sophia E.
Source:
Journal of physical chemistry 2020 v.124 no.13 pp. 7238-7243
ISSN:
1932-7455
Subject:
aluminum; aluminum nitride,   etc   ; crystallography; nuclear magnetic resonance spectroscopy; stable isotopes;     Show all 5 Subjects
Abstract:
... The structure of aluminum carbide (from two different manufacturers) has been interrogated by ²⁷Al solid-state NMR in an effort to accurately characterize the material. Quadrupolar line shapes for ²⁷Al sites such as these are important to catalogue, as efforts are underway to employ NMR crystallography tools to understand and predict both solid-state structures and perturbations to these that are ...
DOI:
10.1021/acs.jpcc.9b11579

6. Switching On/Off Negative Capacitance in Ultrathin Ferroelectric/Dielectric Capacitors

Author:
Acharya, Jagaran; Goul, Ryan; Wilt, Jamie; Wu, Judy
Source:
ACS applied materials & interfaces 2020 v.12 no.8 pp. 9902-9908
ISSN:
1944-8252
Subject:
aluminum; aluminum oxide,   etc   ; capacitance; capacitors; dielectric properties; electrodes; iron;     Show all 7 Subjects
Abstract:
... Ferroelectric (FE) and dielectric (DE) insulator bilayer stacks provide a promising gate for low-power microelectronic devices. To fully realize the FE polarization switching, the DE layer must be ultrathin in the FE/DE bilayer stack. Motivated by this, this work presents the first successful fabrication and characterization of Fe/FeOₓ/Al₂O₃/Fe FE/DE bilayer capacitors using in vacuo atomic layer ...
DOI:
10.1021/acsami.9b19789

7. Experimental investigation of effect of temperature on ignition behaviour of seeded refined kerosene

Author:
Sundararaj, Aldin Justin; Pillai, B.C.; Guna, K.R.
Source:
Thermochimica acta 2020 v.683 pp. 178469
ISSN:
0040-6031
Subject:
aluminum; aluminum oxide,   etc   ; additives; carrying capacity; heat; kerosene; probability; temperature;     Show all 8 Subjects
Abstract:
... Nano additives in fluid has been of great interest for researchers in recent times due to the improvement in heat carrying capacity. The current study focuses on the effect of temperature on the ignition behaviour of nano additive with refined kerosene. The investigation is carried out for volume fractions of 0.01%, 0.05% and 0.1% of alumina-refined kerosene and aluminium-refined kerosene respecti ...
DOI:
10.1016/j.tca.2019.178469

8. Formation mechanism and fracture behavior in extra-filling refill friction stir spot weld for Al–Cu–Mg aluminum alloy

Author:
Wang, Yue; Chai, Peng; Ma, He; Cao, Xuemin; Zhang, Yanhua
Source:
Journal of materials science 2020 v.55 no.1 pp. 358-374
ISSN:
0022-2461
Subject:
aluminum; aluminum alloys,   etc   ; copper; friction; ligaments; magnesium; mechanical properties; welding;     Show all 8 Subjects
Abstract:
... Joint quality of conventional refill friction stir spot welding (RFSSW) is sensitive to welding parameters, and the welding parameters are difficult to control. Thus, deep surface indentation, large hook angle, and void usually occur within the RFSSW joint. An extra-filling RFSSW method is proposed in accordance with defect characteristic. The additional filling method, which was implemented throu ...
DOI:
10.1007/s10853-019-03940-8

9. Nucleation and growth mechanisms of interfacial carbide in graphene nanosheet/Al composites

Author:
Jiang, Yuanyuan; Tan, Zhanqiu; Fan, Genlian; Zhang, Zhibo; Xiong, Ding-Bang; Guo, Qiang; Li, Zhiqiang; Zhang, Di
Source:
Carbon 2020 v.161 pp. 17-24
ISSN:
0008-6223
Subject:
aluminum,   etc   ; chemical reactions; graphene; nanosheets;     Show all 4 Subjects
Abstract:
... The interface reaction is the focus of interface control in the graphene/Al composites, but its evolution processes are still unclear. The present work revealed the nucleation and growth mechanisms of the interfacial reaction product, aluminum carbide (Al₄C₃), in the graphene nanosheet (GNS)/Al composites. The nucleation of Al₄C₃ was found to mainly start at the open edge of GNSs due to the high c ...
DOI:
10.1016/j.carbon.2020.01.032

10. Identifying the Origins of High Thermoelectric Performance in Group IIIA Element Doped PbS

Author:
Cheng, Rui; Hao, Shiqiang; Li, Jun; Bai, Hui; Xie, Sen; Gong, Yue; Liu, Wei; Wu, Jinsong; Tan, Gangjian; Tang, Xinfeng
Source:
ACS applied materials & interfaces 2020 v.12 no.12 pp. 14203-14212
ISSN:
1944-8252
Subject:
aluminum,   etc   ; deformation; gallium; models; solubility;     Show all 5 Subjects
Abstract:
... In this study, the thermoelectric properties of group IIIA element (Al, Ga, In) doped PbS are systematically investigated. Al shows a low solubility limit (<1 mol %) in PbS, whereas Ga and In are soluble up to 2 mol %. Both experimental results and theoretical calculations suggest that Ga or In doping introduces strong gap states in PbS, which are the physical origins of enhanced effective mass an ...
DOI:
10.1021/acsami.0c01269

11. Alkylation by Polyprenols of ortho- and para-Cresols: Synthesis of Isomeric Polyprenylcresols

Author:
Zokirova, U. T.; Khidirova, N. K.; Koroleva, A. A.; Elmuradov, B. Zh.; Kuchin, A. V.; Shakhidoyatov, Kh. M.
Source:
Chemistry of natural compounds 2020 v.56 no.1 pp. 39-43
ISSN:
0009-3130
Subject:
aluminum,   etc   ; alkylation; polymerization; polyprenols; regioselectivity;     Show all 5 Subjects
Abstract:
... Alkylation by polyprenols of o- and p-cresols in the presence of equimolar amounts of the corresponding aluminum cresolates occurred regioselectively to form o-alkyl products regardless of the ratio of starting reagents. Production of 2,6-dipolyprenyl-4-methylphenol was favored if an excess of polyprenols was used with aluminum p-cresolate. A significant amount of polyprenol polymerization product ...
DOI:
10.1007/s10600-020-02939-x

12. Surfactant-free preparation of mesoporous solid/hollow boehmite and bayerite microspheres via double hydrolysis of NaAlO2 and formamide from room temperature to 180 °C

Author:
Yang, Zhichao; Cai, Weiquan
Source:
Journal of colloid and interface science 2020 v.564 pp. 182-192
ISSN:
0021-9797
Subject:
aluminum; aluminum hydroxide; aluminum oxide,   etc   ; adsorption; ambient temperature; boehmite; crystal structure; hydrolysis; microparticles; pH; porous media;     Show all 11 Subjects
Abstract:
... The transformation from solid boehmite microspheres to hollow bayerite microspheres at room temperature (25 °C) was successfully realized via the double hydrolysis of NaAlO₂ and formamide (FA) solution. Effects of reaction time, temperature and FA dos on the transformation process were studied in detail. The results show that hollow boehmite microspheres were obtained via increasing the temperatur ...
DOI:
10.1016/j.jcis.2019.12.110

13. Activated alumina as value-added byproduct from the hydrolysis of hierarchical nanoporous aluminum with pure water to generate hydrogen fuel

Author:
Lee, Timothy; Fu, Jintao; Basile, Victoria; Corsi, John S.; Wang, Zeyu; Detsi, Eric
Source:
Renewable energy 2020 v.155 pp. 189-196
ISSN:
0960-1481
Subject:
aluminum; aluminum hydroxide; aluminum oxide,   etc   ; additives; byproducts; hydrogen; hydrogen fuels; hydrolysis; nanopores; renewable energy sources; surface area; temperature; value added;     Show all 13 Subjects
Abstract:
... The sale of value-added byproducts from hydrogen-generating reactions is a strategic approach to lower the costs of hydrogen fuel in order to realize a truly sustainable hydrogen economy. Metal hydrolysis is a chemical process that produces hydrogen together with a metal hydroxide species; however, this reaction is rarely observed without chemical additives or extreme reaction conditions. Previous ...
DOI:
10.1016/j.renene.2020.03.072

14. Cavity-enhanced energy transfer between nano-emitters and monolayer graphene

Author:
Wang, Jun-Feng; Zhou, Hao-Lei; Xiong, Xiao; Li, Qiang; Cheng, Ze-Di; Liu, Zheng-Hao; Yan, Fei-Fei; Lin, Sheng-Ran; Xu, Jin-Shi; Wang, Guan-Zhong; Wu, Lin; Li, Chuan-Feng; Guo, Guang-Can
Source:
Carbon 2020 v.161 pp. 794-799
ISSN:
0008-6223
Subject:
aluminum,   etc   ; energy transfer; graphene; nanodiamonds; photons; silica;     Show all 6 Subjects
Abstract:
... Photonic cavities have been shown to efficiently control and enhance the Förster resonance energy transfer (FRET) between point-like donors and acceptors. In this work, we experimentally implemented photonic cavity control of the energy transfer between point-like donors and two-dimensional acceptors, using an integrated system combining an Al/SiO₂ cavity with nano-emitters and graphene. We demons ...
DOI:
10.1016/j.carbon.2020.02.003

15. Sol–gel-based coatings for oxidation protection of TiAl alloys

Author:
Wu, Lian-Kui; Wu, Jing-Jia; Wu, Wei-Yao; Cao, Fa-He; Jiang, Mei-Yan
Source:
Journal of materials science 2020 v.55 no.15 pp. 6330-6351
ISSN:
0022-2461
Subject:
aluminum,   etc   ; alloys; coatings; industry; oxidation; titanium;     Show all 6 Subjects
Abstract:
... The low density, high specific strength, and good creep properties make TiAl alloys being promising high-temperature structural materials in aerospace and automotive industries. However, the insufficient oxidation resistance limits their extensive practical applications . It is the intention of this review to illustrate the mechanism and development of sol–gel-based coatings, a surface modificatio ...
DOI:
10.1007/s10853-020-04466-0

16. Zeolite synthesis from aluminum saline slag waste

Author:
Yoldi, M.; Fuentes-Ordoñez, E.G.; Korili, S.A.; Gil, A.
Source:
Powder technology 2020 v.366 pp. 175-184
ISSN:
0032-5910
Subject:
aluminum,   etc   ; adsorbents; catalysts; slags; wastes; zeolites;     Show all 6 Subjects
Abstract:
... This work describes the synthetic procedures developed to obtain zeolite X (NaX), zeolite A (LTA) and sodalite (SOD) using aluminum saline slag waste (AlSSW) as aluminum source in a two-step hydrothermal method involving alkaline extraction of Al, with separation of the residual waste, and hydrothermal treatment at low temperatures and long reaction times. Use of the mother liquor obtained after f ...
DOI:
10.1016/j.powtec.2020.02.069

17. Novel metal-organic super-hydrophobic surface fabricated by nanosecond laser irradiation in solution

Author:
Yang, Zhen; Liu, Xianping; Tian, Yanling
Source:
Colloids and surfaces 2020 v.587 pp. 124343
ISSN:
0927-7757
Subject:
aluminum,   etc   ; corrosion; hydrophobicity; irradiation; liquids; moieties; nanoparticles;     Show all 7 Subjects
Abstract:
... This work aims to propose a newly-emerged method using laser irradiation in liquid for the fabrication of metal-organic highly hydrophobic aluminum surface with excellent corrosion resistant performance. The corrosion results revealed that the laser-induced porous structure with ovoid-like particles, and simultaneously integration of low-free-energy functional groups (-CH₂, -CF₂ and -CF₃) contribu ...
DOI:
10.1016/j.colsurfa.2019.124343

18. A good combination of strength and ductility of ultra-coarse-grained Cu-Al alloy with coarse-grained surface layer via pre-torsional treatment

Author:
Gong, Yanli; Gu, Ji; Ni, Song; Wu, Hong; Song, Min
Source:
Micron 2020 v.129 pp. 102783
ISSN:
0968-4328
Subject:
aluminum,   etc   ; alloys; copper; deformation; mechanical properties; microstructure;     Show all 6 Subjects
Abstract:
... The trade-off between strength and ductility is a long-standing dilemma in metals and alloys. In this study, we fabricated an ultra-coarse-grained (UCG) Cu-6 wt.%Al alloy with a coarse-grained (CG) surface layer by surface mechanical attrition treatment. Pre-torsional treatment for 45°, 90° and 180° was conducted on the UCG-CG specimens, and the effects of pre-torsional treatment on the microstruc ...
DOI:
10.1016/j.micron.2019.102783

19. Optimization of PERC fabrication based on loss analysis in an industrially relevant environment: First results from GÜNAM photovoltaic line (GPVL)

Author:
Es, Fırat; Semiz, Emel; Orhan, Efe; Genç, Ezgi; Kökbudak, Gamze; Baytemir, Gulsen; Turan, Raşit
Source:
Renewable energy 2020 v.146 pp. 1676-1681
ISSN:
0960-1481
Subject:
aluminum oxide,   etc   ; industry; solar cells; solar energy;     Show all 4 Subjects
Abstract:
... Passivated emitter and rear cell (PERC) concept with an already developed roadmap for 24% efficiency will be leading the photovoltaics industry in the upcoming years. In a few industrial pilot lines, efficiencies above 22% have already been attained. Pilot lines have important roles in bridging lab scale proven concepts with the products which are ready for mass production. Therefore, GUNAM Photov ...
DOI:
10.1016/j.renene.2019.07.149

20. Influence of Acid Sites on Xylene Transport in MFI Type Zeolites

Author:
Baumgärtl, Martin; Jentys, Andreas; Lercher, Johannes A.
Source:
Journal of physical chemistry 2020 v.124 no.7 pp. 4134-4140
ISSN:
1932-7455
Subject:
aluminum,   etc   ; Bronsted acids; energy; sorption; xylene; zeolites;     Show all 6 Subjects
Abstract:
... The influence of Brønsted acidic sites at the pore entrance of MFI type zeolites on the transport of p-xylene was investigated by comparing the diffusion rates on samples with and without Al. The pore entrance rate is directly proportional to the concentration of molecules on the external surface. Brønsted acid sites lead to a higher sorption equilibrium constant of xylene because of stronger bind ...
DOI:
10.1021/acs.jpcc.9b11437