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Passivation (chemistry)

Index Passivation (chemistry)

Passivation, in physical chemistry and engineering, refers to a material becoming "passive," that is, less affected or corroded by the environment of future use. [1]

72 relations: Alclad, Alkali, Aluminium, Aluminium alloy, Aluminium oxide, Anodizing, Ångström, Black oxide, Bluing (steel), Cadmium, Christian Friedrich Schönbein, Chromate and dichromate, Chromate conversion coating, Chromium, Citric acid, Cold welding, Concrete, Copper, Corrosion, Corrosion inhibitor, Dental implant, Englewood Cliffs, New Jersey, Ferrous, Fluorine, Glass, Hydrogen, Hydrogen peroxide, Insulator (electricity), International Union of Pure and Applied Chemistry, Iron, Magnesium, Manganese, Martensitic stainless steel, Metal oxide adhesion, Metalloid, Microelectronics, MIL-DTL-5541, Molybdate, Nadcap, Nanometre, New York City, Nickel, Nickel(II) fluoride, Nitric acid, Nitride, Oxide, Oxygen, Painting, Parkerizing, Phosphate conversion coating, ..., Phosphoric acid, Physical chemistry, Pilling–Bedworth ratio, Plating, Pourbaix diagram, Purified water, Rebar, Redox, Rouging, Rust, Sewage treatment, Silicon, Silver, Sodium dichromate, Sodium hydroxide, Stainless steel, Steel, Swarf, Tin, Titanium, Water treatment, Zinc. Expand index (22 more) »

Alclad

Alclad is a corrosion-resistant aluminium sheet formed from high-purity aluminium surface layers metallurgically bonded (rolled onto) to high-strength aluminium alloy core material.

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Alkali

In chemistry, an alkali (from Arabic: al-qaly “ashes of the saltwort”) is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element.

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Aluminium

Aluminium or aluminum is a chemical element with symbol Al and atomic number 13.

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Aluminium alloy

Aluminium alloys (or aluminum alloys; see spelling differences) are alloys in which aluminium (Al) is the predominant metal.

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Aluminium oxide

Aluminium oxide (British English) or aluminum oxide (American English) is a chemical compound of aluminium and oxygen with the chemical formula 23.

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Anodizing

Anodizing (spelled anodising in British English) is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts.

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Ångström

The ångström or angstrom is a unit of length equal to (one ten-billionth of a metre) or 0.1 nanometre.

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Black oxide

Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder.

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Bluing (steel)

Bluing is a passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish.

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Cadmium

Cadmium is a chemical element with symbol Cd and atomic number 48.

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Christian Friedrich Schönbein

Prof Christian Friedrich Schönbein HFRSE(18 October 1799 – 29 August 1868) was a German-Swiss chemist who is best known for inventing the fuel cell (1838) at the same time as William Robert Grove and his discoveries of guncotton and ozone.

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Chromate and dichromate

Chromate salts contain the chromate anion,.

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Chromate conversion coating

Chromate conversion coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, magnesium, and tin alloys.

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Chromium

Chromium is a chemical element with symbol Cr and atomic number 24.

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Citric acid

Citric acid is a weak organic acid that has the chemical formula.

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Cold welding

Cold welding or contact welding is a solid-state welding process in which joining takes place without fusion/heating at the interface of the two parts to be welded.

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Concrete

Concrete, usually Portland cement concrete, is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens over time—most frequently a lime-based cement binder, such as Portland cement, but sometimes with other hydraulic cements, such as a calcium aluminate cement.

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Copper

Copper is a chemical element with symbol Cu (from cuprum) and atomic number 29.

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Corrosion

Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide.

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Corrosion inhibitor

A corrosion inhibitor is a chemical compound that, when added to a liquid or gas, decreases the corrosion rate of a material, typically a metal or an alloy.

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Dental implant

A dental implant (also known as an endosseous implant or fixture) is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor.

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Englewood Cliffs, New Jersey

Englewood Cliffs is a borough in Bergen County, New Jersey, United States.

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Ferrous

In chemistry, ferrous (Fe2+), indicates a divalent iron compound (+2 oxidation state), as opposed to ferric, which indicates a trivalent iron compound (+3 oxidation state).

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Fluorine

Fluorine is a chemical element with symbol F and atomic number 9.

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Glass

Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics.

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Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

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Hydrogen peroxide

Hydrogen peroxide is a chemical compound with the formula.

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Insulator (electricity)

An electrical insulator is a material whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field.

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International Union of Pure and Applied Chemistry

The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.

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Iron

Iron is a chemical element with symbol Fe (from ferrum) and atomic number 26.

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Magnesium

Magnesium is a chemical element with symbol Mg and atomic number 12.

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Manganese

Manganese is a chemical element with symbol Mn and atomic number 25.

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Martensitic stainless steel

Martensitic stainless steel is a specific type of stainless steel alloy.

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Metal oxide adhesion

The strength of metal oxide adhesion effectively determines the wetting of the metal-oxide interface.

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Metalloid

A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them.

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Microelectronics

Microelectronics is a subfield of electronics.

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MIL-DTL-5541

The military specification referred to as MIL-DTL-5541, "Military Specification, Chemical Conversion Coatings on Aluminum and Aluminum Alloys" covers chemical conversion coatings formed by the reaction of chemical conversion materials with the surfaces of aluminum and aluminum alloys.

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Molybdate

In chemistry a molybdate is a compound containing an oxoanion with molybdenum in its highest oxidation state of 6.

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Nadcap

Nadcap (formerly NADCAP, the National Aerospace and Defense Contractors Accreditation Program) is a global cooperative accreditation program for aerospace engineering, defense and related industries.

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Nanometre

The nanometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (American spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (m).

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New York City

The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.

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Nickel

Nickel is a chemical element with symbol Ni and atomic number 28.

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Nickel(II) fluoride

Nickel(II) fluoride is the chemical compound with the formula NiF2.

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Nitric acid

Nitric acid (HNO3), also known as aqua fortis (Latin for "strong water") and spirit of niter, is a highly corrosive mineral acid.

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Nitride

In chemistry, a nitride is a compound of nitrogen where nitrogen has a formal oxidation state of 3-.

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Oxide

An oxide is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula.

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Oxygen

Oxygen is a chemical element with symbol O and atomic number 8.

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Painting

Painting is the practice of applying paint, pigment, color or other medium to a solid surface (support base).

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Parkerizing

Parkerizing, bonderizing, phosphating, or phosphatizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating.

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Phosphate conversion coating

Phosphate coatings are used on steel parts for corrosion resistance, lubricity, or as a foundation for subsequent coatings or painting.

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Phosphoric acid

Phosphoric acid (also known as orthophosphoric acid or phosphoric(V) acid) is a mineral (inorganic) and weak acid having the chemical formula H3PO4.

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Physical chemistry

Physical Chemistry is the study of macroscopic, atomic, subatomic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, thermodynamics, quantum chemistry, statistical mechanics, analytical dynamics and chemical equilibrium.

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Pilling–Bedworth ratio

The Pilling–Bedworth ratio (P–B ratio), in corrosion of metals, is the ratio of the volume of the elementary cell of a metal oxide to the volume of the elementary cell of the corresponding metal (from which the oxide is created).

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Plating

Plating is a surface covering in which a metal is deposited on a conductive surface.

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Pourbaix diagram

In electrochemistry, a Pourbaix diagram, also known as a potential/pH diagram, EH-pH diagram or a pE/pH diagram, maps out possible stable (equilibrium) phases of an aqueous electrochemical system.

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Purified water

Purified water is water that has been mechanically filtered or processed to remove impurities and make it suitable for use.

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Rebar

Rebar (short for reinforcing bar), collectively known as reinforcing steel and reinforcement steel, is a steel bar or mesh of steel wires used as a tension device in reinforced concrete and reinforced masonry structures to strengthen and hold the concrete in compression.

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Redox

Redox (short for reduction–oxidation reaction) (pronunciation: or) is a chemical reaction in which the oxidation states of atoms are changed.

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Rouging

Rouging refers to a form of corrosion found in stainless steel.

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Rust

Rust is an iron oxide, a usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture.

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Sewage treatment

Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage.

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Silicon

Silicon is a chemical element with symbol Si and atomic number 14.

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Silver

Silver is a chemical element with symbol Ag (from the Latin argentum, derived from the Proto-Indo-European ''h₂erǵ'': "shiny" or "white") and atomic number 47.

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Sodium dichromate

Sodium dichromate is the inorganic compound with the formula Na2Cr2O7.

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Sodium hydroxide

Sodium hydroxide, also known as lye, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations and hydroxide anions. Sodium hydroxide is a highly caustic base and alkali that decomposes proteins at ordinary ambient temperatures and may cause severe chemical burns. It is highly soluble in water, and readily absorbs moisture and carbon dioxide from the air. It forms a series of hydrates NaOH·n. The monohydrate NaOH· crystallizes from water solutions between 12.3 and 61.8 °C. The commercially available "sodium hydroxide" is often this monohydrate, and published data may refer to it instead of the anhydrous compound. As one of the simplest hydroxides, it is frequently utilized alongside neutral water and acidic hydrochloric acid to demonstrate the pH scale to chemistry students. Sodium hydroxide is used in many industries: in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner. Worldwide production in 2004 was approximately 60 million tonnes, while demand was 51 million tonnes.

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Stainless steel

In metallurgy, stainless steel, also known as inox steel or inox from French inoxydable (inoxidizable), is a steel alloy with a minimum of 10.5% chromium content by mass.

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Steel

Steel is an alloy of iron and carbon and other elements.

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Swarf

Swarf, also known as chips or by other process-specific names (such as turnings, filings, or shavings), are pieces of metal, wood, or plastic that are the debris or waste resulting from machining, woodworking, or similar subtractive (material-removing) manufacturing processes.

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Tin

Tin is a chemical element with the symbol Sn (from stannum) and atomic number 50.

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Titanium

Titanium is a chemical element with symbol Ti and atomic number 22.

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Water treatment

Water treatment is any process that improves the quality of water to make it more acceptable for a specific end-use.

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Zinc

Zinc is a chemical element with symbol Zn and atomic number 30.

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References

[1] https://en.wikipedia.org/wiki/Passivation_(chemistry)

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