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Related Concept Videos

Colloidal precipitates01:09

Colloidal precipitates

3.8K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Coagulation01:06

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Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
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Colloids03:22

Colloids

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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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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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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Colloids and Suspensions01:17

Colloids and Suspensions

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Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
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Updated: Dec 11, 2025

Determining Tribocorrosion Rate and Wear-Corrosion Synergy of Bulk and Thin Film Aluminum Alloys
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Responsive Colloidosomes with Triple Function for Anticorrosion.

Kusuma Thongchaivetcharat1, Suttiruk Salaluk1, Daniel Crespy1

  • 1Max Planck-VISTEC Partner Laboratory for Sustainable Materials, Department of Materials Science and Engineering, School of Molecular Science and Engineering, Vidyasirimedhi Institute of Science and Technology, Rayong 21210, Thailand.

ACS Applied Materials & Interfaces
|August 26, 2020
PubMed
Summary
This summary is machine-generated.

New triple-functional microcarriers offer advanced corrosion protection for metals. These microcarriers provide corrosion sensing, self-healing, and inhibition, significantly enhancing coating performance and metal lifespan in various industries.

Keywords:
Pickering emulsionanticorrosioncorrosion sensorself-healingsmart coating

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Area of Science:

  • Materials Science
  • Corrosion Engineering
  • Nanotechnology

Background:

  • Metallic structures in construction, aerospace, and transport require robust corrosion protection.
  • Existing coatings lack integrated corrosion status indication and simultaneous protection against corrosion and mechanical damage.

Purpose of the Study:

  • To develop triple-functional microcarriers for enhanced anticorrosion coatings.
  • To integrate corrosion sensing, self-healing, and corrosion inhibition into a single system.

Main Methods:

  • Preparation of Pickering droplets containing a corrosion inhibitor and healing agent.
  • Stabilization of droplets using silica nanocapsules with thymol blue as a corrosion sensor.
  • Embedding microcarriers into a water-based polymer coating on metal substrates.

Main Results:

  • Mechanical damage triggers healing agent release to mitigate corrosion.
  • Corrosion-induced pH changes activate color change and release of corrosion inhibitor.
  • Significant decrease in the corrosion rate of coated metals observed.

Conclusions:

  • Triple-functional microcarriers effectively enhance metal protection and coating performance.
  • The developed system offers integrated corrosion sensing and active protection.
  • This technology promises extended lifespan and improved reliability for metallic structures.