Microstructure and Corrosion Properties of FeCoNiCrMn High Entropy Alloy Coatings Prepared by High Speed Laser Cladding and Ultrasonic Surface Mechanical Rolling Treatment

Publication date: Available online 11 October 2019Source: Materials LettersAuthor(s): Zeqin Cui, Zhen Qin, Peng Dong, Yunjun Mi, Dianqing Gong, Weiguo LiAbstractThe FeCoNiCrMn high-entropy alloy (HEA) coatings were prepared by high-speed laser cladding (HSLC) technology, and the surface was subjected to ultrasonic surface mechanical rolling treatment (SMRT). After SMRT, the surface of the coatings show a gradient structure. The coatings consist of planar crystal, columnar dendrites and equiaxed crystals from inside to outside. Corrosion behavior in a 3.5% NaCl solution indicates that SMRTed coatings exhibit higher corrosion resistance than the coatings without SMRT. Anti-corrosion mechanism was discussed based on grain refinement, grain boundary wetting phase transitions and compressive residual stress.
Source: Materials Letters - Category: Materials Science Source Type: research

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Publication date: 25 January 2020Source: Journal of Industrial and Engineering Chemistry, Volume 81Author(s): Hyeonwoo Shin, Jinwoo Oh, Youngjin Kim, Jeong Gon Son, Changhee Lee, Keun-Young ShinAbstractA highly transparent and high-performance random-network single-walled carbon nanotubes (r-SWCNTs) transistor was successfully fabricated by using chemical vapor deposition-grown graphene source/drain (S/D) electrodes. The bottom-gate, bottom-contact geometry was selected for the graphene S/D contact r-SWCNT (Gr-SWCNT) transistor because of its enhanced gate modulation and good sustainability. A palladium S/D contact r-SWCNT...
Source: Journal of Industrial and Engineering Chemistry - Category: Chemistry Source Type: research
Conclusions: DDAVP was associated with a decreased likelihood of intracranial hemorrhage expansion during the first 24 hours. DDAVP administration did not significantly affect serum sodium and thrombotic events during the study period.
Source: Critical Care Medicine - Category: Emergency Medicine Tags: Neurologic Critical Care Source Type: research
Publication date: Available online 15 November 2019Source: Journal of Membrane ScienceAuthor(s): Lin Li, Zhongzheng Xu, Wen Sun, Jia Chen, Caili Dai, Bin Yan, Hongbo ZengAbstractAdaptable wettability is an intriguing property found in nature yet rare in synthetic materials. Separation membranes bearing this adaptable wettability would be of great significance for practical applications because they can achieve on-demand oil/water separation according to the intrinsic properties of the targeting oil/water mixtures other than external stimuli. Herein, we report one novel type of such smart separation membranes by functionali...
Source: Journal of Membrane Science - Category: Materials Science Source Type: research
Publication date: Available online 14 November 2019Source: Current Opinion in Colloid &Interface ScienceAuthor(s): Yaowen Xing, Mengdi Xu, Xiahui Gui, Yijun Cao, Martin Rudolph, Hans-Jürgen Butt, Michael KapplAbstractFlotation is an interfacial separation technique, which plays a major role in mineral processing industry. It separates particles according to their wetting properties. In flotation pulp, particles and bubbles are highly dispersed in aqueous medium and in the presence of various flotation reagents. Almost all interfacial interactions including inter-particle, inter-bubble, and bubble-particle interact...
Source: Current Opinion in Colloid and Interface Science - Category: Chemistry Source Type: research
This article is licensed under aCreative Commons Attribution-NonCommercial 3.0 Unported Licence.Arvind Arun Dev, Ranabir Dey, Frieder Mugele Deformation of lamellae constituting a soft striped superhydrophobic surface during spreading of a droplet under (electro-)wetting (EW). To cite this article before page numbers are assigned, use the DOI form of citation above. The content of this RSS Feed (c) The Royal Society of Chemistry
Source: RSC - Soft Matter latest articles - Category: Chemistry Authors: Source Type: research
Publication date: Available online 14 November 2019Source: Physica E: Low-dimensional Systems and NanostructuresAuthor(s): Hongyan Li, Guojun Song, Lichun Ma, Xu Hui, Shiyan Sun, Jingru Shi, Mingrui An Xiaoru LiAbstractOne-dimensional (1D) Nd/Ni/PA66 multilayer nanocables were prepared in anodic aluminum oxide (AAO) template from outer layer to inner layer with physical wetting method and two-step electrochemical deposition method, respectively. The length of each layer is almost the same. SEM, TEM, XRD were employed to investigate the morphology and structure and chemical compositions. Magnetization measurements revealed ...
Source: Physica E: Low dimensional Systems and Nanostructures - Category: Nanotechnology Source Type: research
Abstract Herein, through a facile and energy-friendly approach, thermally stable manganese-derived amorphous stacked nanosheet (MASNS) coatings with controlled wetting property ranging from superhydrophilicity to superhydrophobicity were synthesized. The superhydrophobic MASNS coating exhibited remarkable selectivity and sensitivity in the solid phase microextraction (SPME) of non-polar aromatic analytes, even amid the abundance of polar compounds, due to the superhydrophobic effect and the stacked lamellar structures. The established method was applied to the determination of polycyclic aromatic hydrocarbons (PAH...
Source: Analytica Chimica Acta - Category: Chemistry Authors: Tags: Anal Chim Acta Source Type: research
Publication date: Available online 11 November 2019Source: Colloids and Surfaces A: Physicochemical and Engineering AspectsAuthor(s): Ning Feng, Ting Zhao, Yonghong Zhao, Peng Song, Guojin Li, Guangliang ZhangAbstractAliphatic alcohol polyoxyethylene ether phosphate (AEP) is an excellent surfactant, and thus the relationship between the ethylene oxide addition number of AEP and properties of AEP should be systematically described to improve the application efficiency of this surfactant. In this paper, the static surface tension, dynamic surface tension and wetting properties of AEP with different ethylene oxide (EO) additi...
Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Category: Chemistry Source Type: research
LangmuirDOI: 10.1021/acs.langmuir.9b03002
Source: Langmuir - Category: Chemistry Authors: Source Type: research
AbstractProphylactic treatment with aprotinin, a haemostatic antifibrinolytic agent, is indicated to reduce blood loss and blood transfusion in adults with a high risk of major bleeding undergoing primary or repeat isolated coronary artery bypass graft (CABG) with cardiopulmonary bypass. Overall, aprotinin was consistently more effective than tranexamic acid, ε-aminocaproic acid, desmopressin and placebo in reducing massive blood loss, the need for transfusions of blood products, and the need for reoperation due to diffuse bleeding in trials in this patient population, and was generally well-tolerated. The app...
Source: Drugs and Therapy Perspectives - Category: Drugs & Pharmacology Source Type: research
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