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Journal ArticleDOI

Corrosion of metal matrix composites

01 Jan 1994-International Materials Reviews (Taylor & Francis)-Vol. 39, Iss: 6, pp 245-264
TL;DR: In this paper, the corrosion of metal matrix composites (MMCs) is reviewed with emphasis on relating MMC corrosion behaviour to the electrochemical and chemical properties of MMC constituents.
Abstract: The corrosion of metal matrix composites (MMCs) is reviewed with emphasis on relating MMC corrosion behaviour to the electrochemical and chemical properties of MMC constituents. Galvanic corrosion between the reinforcement constituent and the metal matrix governs the corrosion behaviour of many MMCs. Other factors such as residual contaminants of MMC processing and the formation of interphases between reinforcement and matrix can also have pronounced effects on MMC corrosion behaviour. The lack of inherent resistance to corrosion of some MMCs requires that they be coated with organic or inorganic coatings for protection. Although the ultimate goal is to engineer and design MMCs to have good inherent resistance to corrosion (while maintaining excellent mechanical properties), no significant breakthroughs have been achieved in this area for MMCs that are typically prone to corrosion (e.g. graphite-aluminium MMCs). In this review, aluminium, magnesium, lead, depleted uranium, and stainless steel MMCs...
Citations
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Journal ArticleDOI
TL;DR: There remains growing interest in magnesium (Mg) and its alloys, as they are the lightest structural metallic materials Mg alloys have the potential to enable design of lighter engineered systems, including positive implications for reduced energy consumption as mentioned in this paper.

1,173 citations

Journal ArticleDOI
Feng Zhou1, Zhiting Li1, Ganesh Shenoy1, Lei Li1, Haitao Liu1 
05 Aug 2013-ACS Nano
TL;DR: It is shown that a graphene coating can, on the contrary, accelerate long-term oxidation of an underlying copper substrate in ambient atmosphere at room temperature.
Abstract: This paper reports the enhancement of long-term oxidation of copper at room temperature by a graphene coating. Previous studies showed that graphene is an effective anticorrosion barrier against short-term thermal and electrochemical oxidation of metals. Here, we show that a graphene coating can, on the contrary, accelerate long-term oxidation of an underlying copper substrate in ambient atmosphere at room temperature. After 6 months of exposure in air, both Raman spectroscopy and energy-dispersive X-ray spectroscopy indicated that graphene-coated copper foil had a higher degree of oxidation than uncoated foil, although X-ray photoelectron spectroscopy showed that the surface concentration of Cu(2+) was higher for the uncoated sample. In addition, we observed that the oxidation of graphene-coated copper foil was not homogeneous and occurred within micrometer-sized domains. The corrosion enhancement effect of graphene was attributed to its ability to promote electrochemical corrosion of copper.

312 citations


Cites background from "Corrosion of metal matrix composite..."

  • ...It is very well established that the presence of impurities, including graphitic materials, on a metal surface could enhance its galvanic corrosion by serving as an electrode for oxygen reduction.(16) 18 Given these considerations, it is not clear if graphene can serve as an effective anticorrosion coating for the long-term protection of metals....

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Book
02 Aug 1972
TL;DR: In this article, important techniques to process metal matrix composites are described, then the interface region and its characteristics, properties of different metal matrix composite composites, and finally, the authors summarize different applications of metal matrices composites.
Abstract: Metal matrix composites consist of a metal or an alloy as the continuous matrix and a reinforcement that can be particle, short fiber or whisker, or continuous fiber. In this chapter, we first describe important techniques to process metal matrix composites, then we describe the interface region and its characteristics, properties of different metal matrix composites, and finally, we summarize different applications of metal matrix composites.

264 citations

Journal ArticleDOI
TL;DR: In this paper, the authors used optical emission spectroscopy (OES) in the visible and near ultraviolet (NUV) band (285 nm-800 nm) to characterize the PEO plasma and found that the plasma discharge behavior significantly influenced the microstructure and morphology of the oxide coatings and hence the corrosion resistance.
Abstract: Magnesium alloys are increasingly being used as lightweight materials in the automotive, defense, electronics, biomaterial and aerospace industries. However, their inherently poor corrosion and wear resistance have, so far, limited their application. Plasma electrolytic oxidation (PEO) in an environmentally friendly aluminates electrolyte has been used to produce oxide coatings with thicknesses of similar to 80 mu m on an AJ62 magnesium alloy. Optical emission spectroscopy (OES) in the visible and near ultraviolet (NUV) band (285 nm-800 nm) was employed to characterize the PEO plasma. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the coated materials, and potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) in a 3.5% NaCl solution were used to determine the corrosion behavior. It was found that the plasma discharge behavior significantly influenced the microstructure and the morphology of the oxide coatings and, hence the corrosion resistance. The corrosion resistance of the coated alloy was increased by changing the current mode from unipolar to bipolar, where the strong plasma discharges had been reduced or eliminated. (C) 2011 Elsevier B.V. All rights reserved.

192 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of various alloying elements on the mechanical properties of magnesium is reviewed and the broad classification of Mg alloys and their behavioral trends are detailed, and the manufacturing techniques of magnesium alloys along with the secondary techniques are also covered.

128 citations

References
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Book
01 Jan 1973
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Abstract: CRC handbook of chemistry and physics , CRC handbook of chemistry and physics , کتابخانه مرکزی دانشگاه علوم پزشکی تهران

52,268 citations

Book
01 Jun 1974
TL;DR: The Atlas of Electrochemical Equilibria in Aqueous solutions as discussed by the authors is the most complete and complete work on aqueous solvents, which includes a detailed description of the properties of the solvers.
Abstract: Environmental ChemistryAtlas D'équilibres Électrochimiques. Atlas of Electrochemical Equilibria in Aqueous Solutions. By Marcel Pourbaix. Translated by James A. Franklin, EtcElectrochemical ImpedanceAtlas of Electrochemical Equilibria in Aqueous SolutionsElectrochemical Techniques in Corrosion Science and EngineeringEffect of Mineral-OrganicMicroorganism Interactions on Soil and Freshwater EnvironmentsCorrosion EngineeringAtlas of Electrochemical Equilibria in Aqueous SolutionsHandbook of Corrosion DataSolved Problems in Electrochemistry for Universities and IndustryEquilibrium DiagramsCorrosionThe Aqueous Chemistry of Polonium and the Practical Application of its ThermochemistryElectrochemistry in TransitionCorrosion Tests and StandardsFundamentals of Electrochemical CorrosionAtlas of Electrochemical Equilibria in Aqueous SolutionsLectures on Electrochemical CorrosionAtlas of Electrochemical Equilibria in Aqueous SolutionElectrochemical and Optical Techniques for the Study and Monitoring of Metallic CorrosionAtlas of Electrochemical Equilibria in Aqueous SolutionsElectronics Packaging 3Atlas of Chemical and Electrochemical Equilibria in the Presence of a Gaseous PhaseElectrochemistry in Mineral and Metal Processing VATLAS OF ELECTROCHEMICAL EQUILIBRIA.Thermodynamics of Dilute Aqueous SolutionsAtlas of Chemical and Electrochemical Equilibria in the Presence of a Gaseous PhaseBiomaterialsCorrosion Mechanisms in Theory and PracticeAtlas d'équilibres électrochimiques. Atlas of electrochemical equilibria in aqueous solutions. By Marcel Pourbaix. Translated by James A. Franklin, etcAtlas of Electrochemical Equilibria in Aqueous SolutionsSilicon Nitride and Silicon Dioxide Thin Insulating FilmsElectrochemical Energy SystemsInorganic ChemistryThe DaguerreotypeStandard Potentials in Aqueous SolutionCorrosion Engineering and Cathodic Protection HandbookMicroelectronic Applications of Chemical Mechanical PlanarizationAtlas of Electrochemical Equilibria in Aqueous SolutionsAtlas of Electrochemical Equilibria in Aqueous Solutions

7,701 citations

Book
01 Jan 1984
TL;DR: In this article, the origins of the elements, isotopes and atomic weights Chemical periodicity and the periodic table were discussed, including the following elements: Hydrogen Lithium, sodium, potassium, rubidium, caesium and francium Beryllium, magnesium, calcium, strontium, barium and radium Boron Aluminium, gallium, indium and thallium Carbon Silicon Germanium, tin and lead Nitrogen Phosphorus Arsenic, antimony and bismuth Oxygen Sulfur Selenium, tellurium
Abstract: Origin of the elements, isotopes and atomic weights Chemical periodicity and the periodic table Hydrogen Lithium, sodium, potassium, rubidium, caesium and francium Beryllium, magnesium, calcium, strontium, barium and radium Boron Aluminium, gallium, indium and thallium Carbon Silicon Germanium, tin and lead Nitrogen Phosphorus Arsenic, antimony and bismuth Oxygen Sulfur Selenium, tellurium and polonium The halogens: fluorine, chlorine, bromine, iodine and astatine The noble gases: helium, neon, argon, krypton, xenon, and radon Coordination and organometallic compounds Scandium, yttrium, lanthanum and actinium Titanium, zirconium and hafnium Vanadium, niobium and tantalum Chromium, molybdenum and tungsten Manganese, technetium and rhenium Iron, ruthenium and osmium Cobalt, rhodium and iridium Nickel, palladium, and platinum Copper, silver and gold Zinc, cadmium and mercury The lanthanide elements The actinideand transactinide elements (Z=90-112).

6,480 citations

Book
01 Jan 2008

1,594 citations

Book
01 Jan 1988
TL;DR: In this paper, the authors present characterstics and properties of Carbon Electrodes, including physical properties, chemical and surface properties, as well as properties of carbon in the context of electrochemical systems.
Abstract: Physical Properties. Chemical and Surface Properties. Chemical Reactions. Characterstics and Properties of Carbon Electrodes. Electrochemical Behavior of Carbon. Application of Carbon in Electrochemical Systems. Concluding Remarks. Appendix. Index.

1,548 citations