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Related Concept Videos

Corrosion of Reinforcement01:27

Corrosion of Reinforcement

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The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
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Corrosion02:49

Corrosion

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The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
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Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”. 
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Alkali Metals03:06

Alkali Metals

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Group 1 elements are soft and shiny metallic solids. They are malleable, ductile, and good conductors of heat and electricity. The melting points of the alkali metals are unusually low for metals and decrease going down the group, while the density increases going down the group with the exception of potassium (Table 1).
Table 1: Properties of the alkali metals
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Properties of Organometallic Compounds01:23

Properties of Organometallic Compounds

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Organometallic compounds are compounds that contain a carbon–metal bond. Carbon belongs to an organyl group like alkyl, aryl, allyl, or benzyl groups. The metal can be from Group I or Group II of the periodic table, a transition metal, or a semimetal.
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Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys
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Alloy corrosion and passivation spanning composition space.

Camille Ferris1, Nicholas Golio1, Herve Martinez1,2

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Chemical Communications (Cambridge, England)
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Summary
This summary is machine-generated.

Composition spread alloy films (CSAFs) enable high-throughput corrosion passivation studies in multicomponent alloys. These advanced films overcome traditional limitations, facilitating comprehensive understanding of alloy corrosion mechanisms.

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Area of Science:

  • Materials Science
  • Corrosion Science
  • Electrochemistry

Background:

  • Corrosion of metals presents significant challenges across various industries.
  • Understanding alloy corrosion and passivation mechanisms is crucial for developing durable materials.
  • Traditional methods for studying multicomponent alloys are time-consuming and limited in scope.

Purpose of the Study:

  • To highlight the capabilities of composition spread alloy films (CSAFs) for high-throughput corrosion passivation studies.
  • To emphasize the importance of CSAFs in understanding multicomponent alloy corrosion.
  • To showcase CSAFs as a solution to the experimental bottleneck in alloy research.

Main Methods:

  • Review of mechanistic issues in metal corrosion.
  • Introduction to combinatorial methods for alloy sample preparation.
  • Application of CSAFs for studying corrosion across alloy composition space.

Main Results:

  • CSAFs enable the study of multicomponent alloys spanning defined composition spaces (AxByC1-x-y).
  • CSAFs circumvent the experimental bottleneck of preparing and testing numerous individual alloy compositions.
  • CSAFs facilitate novel studies of corrosion passivation that are intractable with traditional methods.

Conclusions:

  • CSAFs are vital tools for the high-throughput study of corrosion passivation in multicomponent alloys.
  • The use of CSAFs significantly advances the comprehensive understanding of alloy corrosion mechanisms.
  • CSAFs offer a powerful approach to explore complex alloy systems efficiently.