High Temperature Oxidation
High Temperature Oxidation - Related Videos
06:43
Writing and Low-Temperature Characterization of Oxide Nanostructures
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Cited by 6 •
2014
Oxide nanostructures provide new opportunities for science and technology. The interfacial conductivity between LaAlO3 and SrTiO3 can be controlled with near-atomic precision using a conductive atomic force microscopy technique. The protocol for creating and measuring conductive nanostructures at LaAlO3/SrTiO3 interfaces is demonstrated.
03:14
Oxidation Numbers
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2020
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules. Oxidation Number (Oxidation State) In the case of an ionic compound, oxidation numbers are assigned based on the number of electrons transferred between reacting species. For example, in the formation of calcium...
10:50
Temperature Dependence - Student Protocol
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2020
Source: Smaa Koraym at Johns Hopkins University, MD, USA Temperature Dependent Decomposition of Hydrogen PeroxideExpand We suggest that students work in pairs for this experiment. Equipment controls may vary. In this lab, you'll perform a decomposition reaction where a single compound breaks down into two or more simpler products. You will observe the decomposition of hydrogen peroxide into water and oxygen. This decomposition happens very slowly, so you will use iron (III) nitrate as a...
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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Cited by 5 •
2013
The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.
01:15
Pyruvate Oxidation
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2019
After glycolysis, the charged pyruvate molecules enter the mitochondria via active transport and undergo three enzymatic reactions. These reactions ensure that pyruvate can enter the next metabolic pathway so that energy stored in the pyruvate molecules can be harnessed by the cells. First, the enzyme pyruvate dehydrogenase removes the carboxyl group from pyruvate and releases it as carbon dioxide. The stripped molecule is then oxidized and releases electrons, which are then picked up by NAD+...
FAQs
The oxide scale acts as either a barrier or a pathway for continued attack. A protective scale limits the movement of ions or electrons and slows additional reaction, whereas a porous or poorly adherent scale allows oxygen access and may detach from the surface. Engineers therefore evaluate scale integrity when judging durability and selecting materials for elevated-temperature service.
Higher temperature and longer exposure generally provide more opportunity for the oxidation process and for ions or electrons to move through the oxide scale. Oxidation kinetics describe how the extent or rate of scale growth changes under these conditions. Comparing kinetics helps engineers determine whether a material can maintain performance throughout the intended operating period.
Oxide growth depends on the transport of ions or electrons through the existing scale. This transport connects reactions at the material surface with oxygen-containing conditions outside the scale, allowing additional oxide to form. The scale's ability to restrict or permit this movement helps explain why some oxide layers slow degradation while others support continuing attack.
Oxygen availability is one of the conditions that controls oxide-scale development. Greater or more sustained access to oxygen can support continued reaction at the material surface, while limited availability changes the conditions under which the scale grows. Considering oxygen exposure alongside temperature and time helps engineers interpret oxidation behavior rather than treating temperature alone as the controlling variable.
Engineers can compare oxidation kinetics to determine how candidate materials behave as temperature, exposure time, and oxygen availability change. The results help identify alloys or coatings that form more protective scales and support choices suited to expected service conditions. This approach connects laboratory or operating observations with decisions about component durability, safety, and performance.
Management strategies include selecting suitable alloys, applying coatings, controlling operating conditions, and planning maintenance around expected oxidation behavior. These choices aim to promote protective scales or limit conditions that encourage porous and poorly adherent layers. Applying the information to turbines, furnaces, engines, and similar systems can improve efficiency, reliability, and service life.