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Form of aluminium oxide
Anodic aluminum oxide, anodic aluminum oxide (AAO), or anodic alumina is a self-organized form of aluminum oxide that has a honeycomb-like structure formed
Anodic_aluminium_oxide
Metal treatment process
conditions; i.e., the iron oxide (actually ferric hydroxide or hydrated iron oxide, also known as rust) forms by anoxic anodic pits and large cathodic surface
Anodizing
Chemical compound
Aluminium oxide (or aluminium(III) oxide) is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring
Aluminium_oxide
High-electrical energy density storage device
aluminium oxide, the battery will no longer produce electricity. However, it is possible to mechanically recharge the battery with new aluminium anodes made
Aluminium–air_battery
Type of capacitor
layer of aluminium oxide by anodization that acts as the dielectric of the capacitor. A non-solid electrolyte covers the rough surface of the oxide layer
Aluminum electrolytic capacitor
Aluminum_electrolytic_capacitor
Process of extracting aluminium from its oxide alumina
Aluminium smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process. Alumina is extracted from the
Aluminium_smelting
Type of battery
Aluminium-ion batteries (AIB) are a class of rechargeable battery in which aluminium ions serve as charge carriers. Aluminium can exchange three electrons
Aluminium-ion_battery
Period of high failure rate of capacitors
between Anodic Aluminium Oxide and Water, 1961 ECS - The Electrochemical Society [8] Ch. Vargel, M. Jacques, M. P. Schmidt, Corrosion of Aluminium, 2004
Capacitor_plague
Chemical compound
hydrous ferric oxide. Ferric oxide is readily attacked, even by weak acids. It is a weak oxidising agent, most famously when reduced by aluminium in the thermite
Iron(III)_oxide
Main component of cathodic protection
place, oxidation and reduction reactions occur and electrochemical cells are formed on the surface of the metal so that some areas will become anodic (oxidation)
Galvanic_anode
Type of capacitor
thin insulating oxide layer on their surface by anodic oxidation which can function as a dielectric. There are three different anode metals in use for
Electrolytic_capacitor
Alloy in which aluminium is the predominant metal
surfaces will develop a white, protective layer of aluminium oxide when left unprotected by anodizing or correct painting procedures. In a wet environment
Aluminium_alloy
Aluminium (or aluminum) metal is very rare in native form, and the process to refine it from ores is complex, so for most of human history it was unknown
History_of_aluminium
Weather- and industrial chemical-resistant aluminium alloy
pure aluminium, although an increase in oxide growth rate and high conductance of the oxide film were observed. The composition of 5083 aluminium is: Aluminium:
5083_aluminium_alloy
Aluminium smelting process
process for smelting aluminium. It involves dissolving aluminium oxide (alumina) (obtained most often from bauxite, aluminium's chief ore, through the
Hall–Héroult_process
Chemical element with atomic number 13 (Al)
metals, about one-third that of steel. Aluminium has a great affinity toward oxygen, forming a protective layer of oxide on the surface when exposed to air
Aluminium
Surface-treatment process for metals
electrochemical surface treatment process for generating oxide coatings on metals. It is similar to anodizing, but it employs higher potentials, so that discharges
Plasma_electrolytic_oxidation
Electrochemical cell using a metallic anode and oxygen cathode
aprotic electrolyte. They function by the electrochemical oxidation of the metal at the anode and the reduction of oxygen from the air at the cathode.
Metal–air electrochemical cell
Metal–air_electrochemical_cell
Solid conductive electrolyte
that by anodic oxidation form an insulating oxide layer. By applying a positive voltage to the anode (+) material in an electrolytic bath an oxide barrier
Polymer_capacitor
Gradual destruction of materials by chemical reaction with its environment
graphite, mixed metal oxide or platinum coated titanium or niobium coated rod and wires. Anodic protection impresses anodic current on the structure
Corrosion
Reuse of scrap aluminium
aluminium from bauxite; the amount of energy required to convert aluminium oxide into aluminium can be vividly seen when the process is reversed during the
Aluminium_recycling
Device for generating microwaves
belief, most consumer magnetrons use aluminium oxide (alumina) instead of the much more dangerous beryllium oxide for the insulators. Alumina is considerably
Cavity_magnetron
Chemical reaction with oxidation state changes
reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss
Redox
Type of iron oxide
albeit not to the extent of other oxides such as aluminium oxide on aluminium. Rust is a general name for a complex of oxides and hydroxides of iron, which
Rust
galvanic couple, with aluminium as the anode and the other metal element as the cathode, rapidly disturbs the formation of the native oxide layer and continually
Aluminium-based nanogalvanic alloys
Aluminium-based_nanogalvanic_alloys
White powder insoluble in water
Zinc oxide is an inorganic compound with the formula ZnO. It is a white powder which is insoluble in water. ZnO is used as an additive in numerous materials
Zinc_oxide
Chemical element with atomic number 21 (Sc)
scandium on aluminium alloys were discovered. Its use in such alloys remains its only major application. The global trade of scandium oxide is 15–20 tonnes
Scandium
generally as an anode because a (highly resistive) oxide of the metal forms under anodic conditions. Valve metals include commonly aluminium, titanium, tantalum
Valve_metals
Caustic soda, with formula NaOH
containing ores (bauxite) to produce alumina (aluminium oxide) which is the raw material used to produce aluminium via the electrolytic Hall-Héroult process
Sodium_hydroxide
Chemical compound
aluminium-doped zinc oxide (AZO) and indium-doped cadmium oxide have been proposed as alternative materials. Other inorganic alternatives include aluminium, gallium
Indium_tin_oxide
Physico-chemical processes contributing to protect a surface against oxidation
electrolytic process that forms a thicker oxide layer. The anodic coating consists of hydrated aluminium oxide and is considered resistant to corrosion and abrasion
Passivation_(chemistry)
Electrochemical process
the First World War, the first procedures for anodic oxidation and coloring of anodically oxidized aluminium were developed (1923, 1924.DRP. 413876). In
Electrochemical coloring of metals
Electrochemical_coloring_of_metals
Lithium-ion battery cathode material
Lithium nickel manganese cobalt oxides (abbreviated as Li-NMC, LNMC, NMC, or NCM) are mixed metal oxides of lithium, nickel, manganese and cobalt with
Lithium nickel manganese cobalt oxides
Lithium_nickel_manganese_cobalt_oxides
Wafer bonding process in semiconductor manufacturing
Anodic bonding is a wafer bonding process to seal glass to either silicon or metal without introducing an intermediate layer. Anodic bonding is commonly
Anodic_bonding
Chemical element with atomic number 24 (Cr)
acid as an electrolyte in the solution. During anodization, an oxide layer is formed on the aluminium. The use of chromic acid, instead of the normally
Chromium
Type of rechargeable battery
lithium-ion battery, based on a titanium disulfide cathode and a lithium-aluminium anode, although it suffered from safety problems and was never commercialized
Lithium-ion_battery
Chemical element with atomic number 25 (Mn)
is reduced to the manganese oxide-hydroxide MnO(OH) during discharging, preventing the formation of hydrogen at the anode of the battery. MnO2 + H2O +
Manganese
Usually non-metallic particle present in liquid aluminum alloy
liquid aluminium reacts with the oxygen and form an oxide film layer (gamma-Al2O3). This layer becomes thicker with time. When molten aluminium is disturbed
Aluminium_alloy_inclusions
Fixing pieces of aluminium together
oxide layer. Aluminium oxide is weakly bonded to the underlying aluminium; without oxide removal the adhesive joint is dramatically weakened. Oxide layers
Aluminium_joining
Chemical element with atomic number 22 (Ti)
element; it has symbol Ti and atomic number 22. Found in nature only as an oxide, it can be reduced to produce a lustrous transition metal with a silver
Titanium
Chemical compound
Titanium dioxide, also known as titanium(IV) oxide or titania /taɪˈteɪniə/, is the inorganic compound derived from titanium with the chemical formula
Titanium_dioxide
Steel alloy resistant to corrosion
carbon steel and aluminium, becomes the cathode, accelerating the corrosion of the anodic metal. An example is the corrosion of aluminium rivets fastening
Stainless_steel
Type of anode for aluminium smelting
containing the aluminium oxide or aluminium fluoride. The process consumes the anode at a rate of roughly 450 kg of anode per tonne of aluminium produced.
Prebaked consumable carbon anode
Prebaked_consumable_carbon_anode
Technique in chemistry and manufacturing
electrolytic cathode is used as a shaped tool for removing material by anodic oxidation from a workpiece. ECM is often used as a technique for deburring or
Electrolysis
Type of rechargeable battery
manganese and iron, and the use of aluminium collectors instead of copper ones in LIBs. Many layered transition metal oxides can reversibly intercalate sodium
Sodium-ion_battery
Chemical element with atomic number 30 (Zn)
room temperature and has a shiny blue whitish appearance when surface oxidation is removed. It is the first element in group 12 (IIB) of the periodic
Zinc
Chemical compound
rubies. Chromic acid solution is also used in applying types of anodic coating to aluminium, which are primarily used in aerospace applications. On the International
Chromium_trioxide
Physical and chemical properties of pure water
OH− Some other reactive metals, such as aluminium and beryllium, are oxidized by water as well, but their oxides adhere to the metal and form a passive
Properties_of_water
Chemical element with atomic number 12 (Mg)
Magnesium may also be used as an igniter for thermite, a mixture of aluminium and iron oxide powder that ignites only at a very high temperature. When finely
Magnesium
Chemical element with atomic number 14 (Si)
Latin): chaux (calcium oxide), magnésie (magnesia, magnesium oxide), baryte (barium sulfate), alumine (alumina, aluminium oxide), and silice (silica, silicon
Silicon
Process of changing the color of metal surfaces with different chemical solutions
to form a colored oxide or salt. Anodizing – electrolytic passivation process used to increase the thickness of the natural oxide layer, producing a
Chemical_coloring_of_metals
Oxide compound with cations of multiple elements or different oxidation states
and topaz, are complex oxide crystals. Historically, some complex oxide materials (such as strontium titanate, yttrium aluminium garnet, and gadolinium
Complex_oxide
Foundation Donor Display. Modular Synthesizer front panels Young, L (1961). Anodic Oxide Films. New York: Academic Press. pp. 193–210. U.S. Patent 4,092,169.
Photosensitive anodized aluminum
Photosensitive_anodized_aluminum
Branch of physical chemistry
iron is oxidized. Attempts to save a metal from becoming anodic are of two general types. Anodic regions dissolve and destroy the structural integrity of
Electrochemistry
Chemical element with atomic number 26 (Fe)
iron cathode, an anode formed from an alloy of chromium, aluminium and iron, and the electrolyte is a mixture of molten metal oxides into which iron ore
Iron
Hexagonal lattice made of carbon atoms
Brodie noted the highly lamellar structure of thermally reduced graphite oxide. Researchers used X-ray crystallography in an attempt to determine the structure
Graphene
typically a metal oxide or phosphate. The electrolyte is a lithium salt in an organic solvent. The negative electrode (which is the anode when the cell is
Lithium-ion battery components
Lithium-ion_battery_components
Aluminium smelter in New Zealand
smelter uses the Hall–Héroult process to convert alumina (aluminium oxide) to elemental aluminium. Bauxite is mined in Australia and refined into alumina
Tiwai_Point_Aluminium_Smelter
Capacitor with high capacitance in a small package
service life. They are aluminum electrolytic capacitors with anodic oxidized aluminum oxide as dielectric and with the semiconducting solid manganese dioxide
SAL_electrolytic_capacitor
Chemical element with atomic number 20 (Ca)
Latin): chaux (calcium oxide), magnésie (magnesia, magnesium oxide), baryte (barium sulfate), alumine (alumina, aluminium oxide), and silice (silica, silicon
Calcium
Type of material
Niobium crystals and a 1 cm3 anodized niobium cube for comparison 3D print of NASA meatball, made out of GRX-810, an oxide dispersion strengthened high
Metal
Chemical compound
Lithium aluminium germanium phosphate, typically known with the acronyms LAGP or LAGPO, is an inorganic ceramic solid material whose general formula is
Lithium aluminium germanium phosphate
Lithium_aluminium_germanium_phosphate
Process for solidifying molten metal
through the addition of silicon or aluminium to the steel, which reacts to form silicon oxide (silica) or aluminium oxide (alumina). However, too much alumina
Continuous_casting
Chemical compound
Lithium aluminate (LiAlO 2), also called lithium aluminium oxide, is an inorganic chemical compound, an aluminate of lithium. In microelectronics, lithium
Lithium_aluminate
Food preparation containers
a lower temperature than the center. Anodized aluminium has had the naturally occurring layer of aluminium oxide thickened by an electrolytic process
Cookware_and_bakeware
Form of insidious localized corrosion in which a pit develops at the anode site
pitting corrosion is the depassivation of a small area, which becomes anodic (oxidation reaction) while an unknown but potentially vast area becomes cathodic
Pitting_corrosion
Production of metals by electrolysis
can be done on a molten metal oxide (smelt electrolysis) which is used for example to produce aluminium from aluminium oxide via the Hall-Hérault process
Electrometallurgy
Chemical element with atomic number 17 (Cl)
covalent chlorides are known for metals in oxidation state +3 (e.g. scandium chloride is mostly ionic, but aluminium chloride is not). Silver chloride is very
Chlorine
Ways electronic components fail and prevention measures
usually visible as a discolored dielectric or as a locally melted anode. Metal oxide varistors typically have lower resistance as they heat up; if connected
Failure of electronic components
Failure_of_electronic_components
Process of wearing down a surface
anodic oxide coatings on aluminium and aluminium alloys -- Part 1: Wheel wear test JIS H 8682-2 Test methods for abrasion resistance of anodic oxide coatings
Abrasion_(mechanical)
with ISO 7005-(1-3)] ISO 2085:2018 Anodizing of aluminium and its alloys — Check for continuity of thin anodic oxidation coatings — Copper sulfate test ISO/R
List of ISO standards 2000–2999
List_of_ISO_standards_2000–2999
Chemical element with metallic and nonmetallic properties
groups 1–3, and with the lanthanides and actinides. Its oxide CO2 forms carbonic acid H2CO3. Aluminium is ordinarily classified as a metal. It is lustrous
Metalloid
Chemical element with atomic number 47 (Ag)
than aluminium at all wavelengths longer than ~450 nm. At wavelengths shorter than 450 nm, silver's reflectivity is inferior to that of aluminium and drops
Silver
Mixture of magnesium with other metals
structural[clarification needed] metal) with other metals (called an alloy), often aluminium, zinc, manganese, silicon, copper, rare earths and zirconium. Magnesium
Magnesium_alloy
Device that controls current between electrodes
coated with a mixture of barium oxide and strontium oxide, sometimes with addition of calcium oxide or aluminium oxide. An electric heater is inserted
Vacuum_tube
proportions of zinc. The parts must not be anodized, as the oxide layer traps (and then outgasses) water vapor. Anodizing also makes the surface non-conducting
Materials_for_use_in_vacuum
Ore rich in iron or the element Fe
electrical charges born by Fe2+ cations released in solution by Fe oxidation on the anodic zone inside the pit must be quickly compensated/neutralized by
Iron_ore
diphenylalanine. Cobalt oxide particles may be anchored on substrates such as graphene to improve the dimensional stability of the anode and to prevent particle
Cobalt_oxide_nanoparticle
Vacuum tube used to display images
21–25% of lead oxide (PbO), The neck may contain 30–40% of lead oxide, and the screen may contain 12% of barium oxide, and 12% of strontium oxide. A typical
Cathode_ray_tube
Electrical device that converts AC to DC
wet chemical cells, mercury-arc valves, stacks of copper and selenium oxide plates, semiconductor diodes, silicon-controlled rectifiers and other silicon-based
Rectifier
Alloy used in nuclear weapon pits
plutonium can be added in the form of oxides or halides. The δ phase plutonium–gallium and plutonium–aluminium alloys are produced by adding plutonium(III)
Plutonium–gallium_alloy
Process of producing goods
process – Aluminium oxide (Al2O3) is smelted with coke (C) in a high-temperature electrolysis reaction, yielding the desired pure aluminium (Al) and a
Industrial_processes
Corrosion prevention technique
cast iron, graphite, mixed metal oxide (MMO), platinum and niobium coated wire and other materials. For pipelines, anodes are arranged in groundbeds either
Cathodic_protection
Semiconductor light source
wells, the light emission can in theory be varied from violet to amber. Aluminium gallium nitride (AlGaN) of varying Al/Ga fraction can be used to manufacture
Light-emitting_diode
Chemical element with atomic number 23 (V)
artificially, the formation of an oxide layer (passivation) somewhat stabilizes the free metal against further oxidation. Spanish scientist Andrés Manuel
Vanadium
Metal–air electrochemical cell
metal–air electrochemical cell or battery chemistry that uses oxidation of lithium at the anode and reduction of oxygen at the cathode to induce a current
Lithium–air_battery
Electrical wire or other conductor made of copper
however, compatible with aluminium wire or connectors. If the two metals are joined, a galvanic reaction can occur. Anodic corrosion during the reaction
Copper_conductor
Chemical compound (H2SO4)
dehydration. Dilute sulfuric acid is substantially less hazardous without the oxidative and dehydrating properties. Nonetheless, it must be handled with care
Sulfuric_acid
Chemical element with atomic number 1 (H)
they form passivated oxide coatings. An alloy of aluminium and gallium, however, does react with water. In high-pH solutions, aluminium can react with H2:
Hydrogen
Different oxidation states of Oxygen
sand), aluminium (aluminium oxide Al2O3, in bauxite and corundum), iron (iron(III) oxide Fe2O3, in hematite and rust) and other oxides of metals. The rest
Oxygen_compounds
Use of heat and a reducing agent to extract metal from ore
or lead, are roasted before smelting in order to convert the sulfides to oxides, which are more readily reduced to the metal. Roasting heats the ore in
Smelting
Chemical element with atomic number 57 (La)
oxide spalls off like iron rust, instead of forming a protective oxide coating like aluminium, scandium, yttrium, and lutetium. Lanthanum reacts with the halogens
Lanthanum
Waste material generated in aluminium smelting
Liner. Primary aluminium smelting is the process of extracting aluminium from aluminium oxide (also known as alumina). The process takes place in electrolytic
Spent_potlining
Chemical compound
for reduction to the metal. The main method is reduction of this oxide with aluminium: 3 Nb2O5 + 10 Al → 6 Nb + 5 Al2O3 An alternative but less practiced
Niobium_pentoxide
Solid carbon-rich material
processed in an anode baking oven to produce anode coke of the desired shape and physical properties. The anodes are mainly used in the aluminium and steel
Petroleum_coke
Chemical compound
alternative route, which is more direct and avoids salts, entails anodic oxidation of aqueous chlorine at a platinum electrode. In the laboratory for
Perchloric_acid
English scientist (born 1957)
B; Conical tungsten stamps for the replication of pore arrays in anodic aluminium oxide films, Nanotechnology (2009) 20, 245304 Stringer, J and Derby B;
Brian_Derby
Type of electrolytic capacitor
It consists of a pellet of porous tantalum metal as an anode, covered by an insulating oxide layer that forms the dielectric, surrounded by liquid or
Tantalum_capacitor
Chemical species that donates an electron to another species in a redox reaction
requires an anode and cathode to take place. The anode is an element that loses electrons (reducing agent), thus oxidation always occurs in the anode, and the
Reducing_agent
Method of thin film application
properties of thick vacuum condensates of nickel, titanium, tungsten, aluminium oxide and zirconium dioxide". Phys. Met. Metallogr. 28: 83–90. H. Windischman
Sputter_deposition
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE
ANODIC ALUMINIUM-OXIDE