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  • The effect of high concentration of phosphorus in

    Cited by: 3
  • Anodic dissolution of aluminum and anodic

    Author: Rene Böttcher, Adriana Ispas, Andreas Bund
  • Hydration of Passive Oxide Films on Aluminum The

    2019-5-26  Secondary ion mass spectrometry (SIMS) has been used in conjunction with isotopic labeling to determine the extent and rate of passive film hydration on aluminum. The rates at which oxygen- and hydrogen-containing species migrate through the film have been determined as a function of temperature and applied potential (cathodic and anodic polarization). The results suggest that defects such as ...

  • Aluminum contamination of food during culinary

    位置: 8600 Rockville Pike, Bethesda, MD
  • Aluminum and Aluminum Alloys - NIST

    2016-4-4  Aluminum is often selected for its electrical conductivity, which is nearly twice that of copper on an equivalent weight basis. The requirements of high conductivity and mechanical strength can be met by use of long-line, high-voltage, aluminum steel-cored reinforced transmis-sion cable. The thermal conductivity of aluminum alloys, about 50 to 60%

  • Aluminium content of selected foods and food

    2011-11-28  The aluminium concentration of baby food (dry powder, not prepared for immediate consumption) was below 5 mg kg-1. The "tomato pulp" samples had an aluminium concentration of 1.5 to 15 mg kg-1. The aluminium concentration of dietary foodstuff products was between 1 and 53 mg kg-1. One "soy product" sample had an aluminium concentration of 138 ...

  • Enhanced thermal stability of alpha gallium oxide films ...

    Enhanced thermal stability of alpha gallium oxide films supported by aluminum doping Sam-Dong Lee1*, Yoshito Ito1, Kentaro Kaneko 2, and Shizuo Fujita * 1Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510, Japan 2Photonics and Electronic Science and Engineering Center, Kyoto University, Kyoto 615-8520, Japan E-mail: [email protected]; fujitasz ...

  • Spectral Dependence of Optical Absorption of 4H-SiC

    Optical absorption of p-n- 4 H -SiC structures doped with boron and aluminum by low-temperature diffusion was studied for the first time. Diffusion of impurities was performed from aluminum-silicate and boron-silicate films (sources) fabricated by various methods. In the spectral dependences of optical absorption at room temperature, bands associated with transitions from impurity levels, as ...

  • Thin Film Mechanics - Harvard MRSEC

    2004-8-6  When a film is deposited at low temperature, there is very little surface diffusion and one would expect the vacancy concentration to be much larger than at equilibrium. When these excess vacancies are subsequently annihilated, the associated volume change results in a stress in the film. The stress change depends on: • Vacancy volume Ωv

  • Trivalent Chromium Conversion Coating for Corrosion ...

    2016-1-13  would also provide a nucleation site for aluminum corrosion and further undercutting of the coating. The successful application of this conversion process requires aluminum to be clean and free from organic soils, oxides and corrosion products. The name conversion coating describes a process of chemical reaction that results in a surface film.

  • Effect of Sulfide Concentration on the Corrosion and ...

    The effect of sulfide concentration on the corrosion and cavitation erosion behavior of a cast manganese-aluminum bronze (MAB) alloy in 3.5% NaCl solution was investigated. The electrochemical results showed that when the sulfide concentration exceeded 50 ppm, hydrogen evolution reaction dominated the cathodic process because of the very negative corrosion potential of MAB, and the formation ...

  • Four Surface Treatment Methods for Aluminum Alloy

    1 天前  It is an effective accelerator for aluminum phosphating: fluoride can promote film formation, increase film weight, and refine grain; Mn2+, Ni2+ can be obvious Refine the grains to make the phosphating film uniform and compact and improve the appearance of the phosphating film; when the Zn2+ concentration is low, the film cannot be formed or ...

  • Hydration of Passive Oxide Films on Aluminum The

    2019-5-26  Secondary ion mass spectrometry (SIMS) has been used in conjunction with isotopic labeling to determine the extent and rate of passive film hydration on aluminum. The rates at which oxygen- and hydrogen-containing species migrate through the film have been determined as a function of temperature and applied potential (cathodic and anodic polarization). The results suggest that defects such as ...

  • Monitor for oxygen concentration in aluminum-based

    1982-9-14  The ratio of oxygen concentration to aluminum concentration in an aluminum film deposited in a vacuum chamber on an integrated circuit (IC) substrate is monitored by measuring either the resistivity or the resistance of a film of aluminum being simultaneously deposited film

  • Effects of Chloride Ion Concentration and Temperature on ...

    Effects of chloride ion concentration and temperature on the anode performance of aluminum/air batteries were studied by polarization curves,electrochemical impedance spectroscopy (EIS) and galvanostatic potential-time curves.The results showed that the ...

  • Preparation of high dielectric constant composite oxide films ...

    Film composition and percentage of atom were analyzed by XPS, voltage-time response of aluminum foil during anodizing was followed, dielectric constant of composite films was calculated in theory ...

  • Effect of electrolyte concentration on the tribological ...

    2019-4-23  Effect of electrolyte concentration on the tribological performance of MAO coatings on aluminum alloys Clean Energy Materials and Engineering Center, State Key Laboratory of Electronic Thin Film and Integrated Device, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China..

  • Aluminum and Aluminum Alloys - NIST

    2016-4-4  Aluminum is often selected for its electrical conductivity, which is nearly twice that of copper on an equivalent weight basis. The requirements of high conductivity and mechanical strength can be met by use of long-line, high-voltage, aluminum steel-cored reinforced transmis-sion cable. The thermal conductivity of aluminum alloys, about 50 to 60%

  • An Improvement in the Zincate Method for Plating on

    Editor’s Note: This paper was originally published as T.E. Such A.E. Wyszynski, Plating, 52 (10), 1027-1034 (1965). A printable pdf of this paper can be accessed and printed HERE.. ABSTRACT: Investigations were conducted into the sodium zincate solution used for treating aluminum prior to its being plated. Measurements of the adhesion of the nickel plate to aluminum and its alloys were ...

  • Reactive Sputtering of Aluminum Nitride (002) Thin

    位置: 8600 Rockville Pike, Bethesda, MD
  • Effects of Moisture Content on the Minimum

    Aluminum powder has been widely applied to various industries. However, its high activity and high burn rate can cause serious explosion risks. Many factors affecting the explosion of aluminum powder have been determined, yet moisture content has not been included. In the present work, the minimum explosible concentrations of aluminum powders with different moisture contents were measured with ...

  • Effect of NaAlO2 sealing on corrosion resistance of

    1 INTRODUCTION. A 2024 Aluminum alloy is used extensively in the aerospace industry, automotive industry and other applications due to its light weight and reliable high mechanical properties. 1-3 Due to the strong oxygen affinity of the aluminum alloy, it is easy to form a natural oxide film on the surface, which can not provide adequate protection against aggressive ions.

  • Reactive Sputtering of Aluminum Nitride (002) Thin

    位置: 8600 Rockville Pike, Bethesda, MD
  • Electrodeposition of polypyrrole films on aluminum

    Introduction. Polypyrrole (PPy) is an attractive material because of its high conductivity, environmental stability, wide range of applications (such as membranes, batteries, anti-corrosion films, etc) and easy preparation from aqueous or organic media by chemical and electrochemical methods. 1-9 Pyrrole electrochemical polymerization is an advantageous process on forming PPy films.

  • Falling Film Evaporator for Desorption of Basic Aluminum ...

    2017-12-12  At the heating temperature of 108 °C, liquid film flow rate of 0.005 kg/s, sulfur concentration of 0.06 mol/L, aluminum concentration of 20 g/L, and basicity of 20%, the SO2 desorption efficiency inside the converging–diverging tube could reach a high level 94.2%

  • Fabrication and Corrosion Resistance of

    Also, aluminum has high resistance to corrosion due to the presence of a thin, compact oxide film that spontaneously formed on the metal surface. However, aluminum is active and prone to corrosion in contact with water, especially in corrosive environment such as in aqueous solution containing Cl − ions [ 3 ], then it limits the scope of ...

  • An Improvement in the Zincate Method for Plating on

    Editor’s Note: This paper was originally published as T.E. Such A.E. Wyszynski, Plating, 52 (10), 1027-1034 (1965). A printable pdf of this paper can be accessed and printed HERE.. ABSTRACT: Investigations were conducted into the sodium zincate solution used for treating aluminum prior to its being plated. Measurements of the adhesion of the nickel plate to aluminum and its alloys were ...

  • 郭战胜 -上海大学力学与工程科学学院

    2020-6-12  Effects of Hydrostatic Stress and Concentration-Dependent Elastic Modulus on Diffusion-Induced Stresses in Cylindrical Li-Ion Batteries. Journal of Applied Mechanics-Transactions of the Asme. 2014, 81(3):031013. 14.Guo ZS, Zhang T, Zhu JY, Wang YH.

  • Comparative Study for Anodizing Aluminum Alloy 1060

    2018-1-19  concentration causes a reduction in the thickness which reaches a minimum value at 35–65%. The aim of this work is to achieve comparative study for the characteristics of the anodic film thickness growth of aluminum alloy (1060) by using different types of electrolytic acidic solutions such as oxalic acid (C R2 R H R 2 R O R 4 R.2H R 2 R

  • ASM Handbook, Volume 5: Surface Engineering

    2016-3-29  Anodizing aluminum can be accomplished in a wide variety of electrolytes, employing varying operating conditions including concentration and composition of the electrolyte, presence any Table I Conventional anodizing processes Amount, Temperature Bath wt% *C OF Dura- lion, min Voltage, V Current density Film thickness

  • Comparative Study for Anodizing Aluminum Alloy 1060

    2018-1-19  concentration causes a reduction in the thickness which reaches a minimum value at 35–65%. The aim of this work is to achieve comparative study for the characteristics of the anodic film thickness growth of aluminum alloy (1060) by using different types of electrolytic acidic solutions such as oxalic acid (C R2 R H R 2 R O R 4 R.2H R 2 R

  • Falling Film Evaporator for Desorption of Basic Aluminum ...

    2017-12-12  At the heating temperature of 108 °C, liquid film flow rate of 0.005 kg/s, sulfur concentration of 0.06 mol/L, aluminum concentration of 20 g/L, and basicity of 20%, the SO2 desorption efficiency inside the converging–diverging tube could reach a high level 94.2%

  • SO 2 enhanced desorption from basic aluminum

    During the falling-film desorption of basic aluminum sulfate desulphurization–regeneration solution, SO 2 desorption efficiency gradually increases with the inlet sulfur concentration . In comparison, at the inlet sulfur concentration of 0.02 kmol m −3 , the outlet sulfur concentration is 61% lower and the desorption efficiency (up to 89.3% ...

  • Effect of Al concentration on optical parameters of ZnO thin ...

    2020-5-18  Pure and Aluminum doped zinc oxide (Al:ZnO) film samples were deposited by the sol–gel dip-coating technique for understand influence of Al concentration on the films crystallization, electrical conductivity and optical transparency.

  • Corrosion Characteristics of Aluminum in Sodium ...

    2019-7-7  potential of aluminum were measured in the 1×10-3 mol L-1 sodium bicarbonate solution, indicating that the corrosion rate of aluminum in this solution was the lowest observed. Therefore, it can be concluded that the corrosion behavior of aluminum in sodium bicarbonate solutions at certain concentrations is inhibited. 3.2. EIS curves

  • 「aluminum concentration」に関連した英語例文の一覧

    aluminum concentration 英語例文 986万例文収録! 英和和英辞典 英語例文 英語類語 共起表現 英単語帳 英語力診断 英語翻訳 英会話 スピーキングテスト 優待特典 英語の質問箱 ...

  • Electrodeposition of polypyrrole films on aluminum

    Introduction. Polypyrrole (PPy) is an attractive material because of its high conductivity, environmental stability, wide range of applications (such as membranes, batteries, anti-corrosion films, etc) and easy preparation from aqueous or organic media by chemical and electrochemical methods. 1-9 Pyrrole electrochemical polymerization is an advantageous process on forming PPy films.

  • METHOD FOR MANUFACTURING SCANDIUM

    2012-1-5  A method for manufacturing a scandium aluminum nitride film (i.e., a Sc x Al 1−x N y film) according to an example embodiment includes a step of sputtering with using a sputtering target made of an alloy of scandium aluminum (Sc x Al 1−x) in an atmosphere including a nitrogen gas.

  • Effect of moisture concentration on electrodeposition

    The influence of moisture on Al electrodeposition was investigated in 23.3 mol% AlCl3–DMSO2 bath at 403 K. Cyclic voltammetry measurement and electrodeposition at constant current were carried out in baths containing 67–174 ppm moisture. The deposits obtained under 40 mA cm−2 for 1 h was characterized in terms of their surface appearance, surface microstructure, and cross section in SEM ...

  • ASM Handbook, Volume 5: Surface Engineering

    2016-3-29  Anodizing aluminum can be accomplished in a wide variety of electrolytes, employing varying operating conditions including concentration and composition of the electrolyte, presence any Table I Conventional anodizing processes Amount, Temperature Bath wt% *C OF Dura- lion, min Voltage, V Current density Film thickness