Cobalt

Cobalt

A hard, brittle, metallic chemical element. Cobalt's symbol is Co, its atomic number is 27, and its atomic weight is 58.93. Cobalt is used as an alloying element in permanent magnets.

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Industry/Domain: Aviation
Category: Aeronautics
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cobalt

Engineering; Electronic engineering

Symbol, Co. A metallic element. Atomic number, 27. Atomic weight, 58.94.

cobalt

Chemistry; General chemistry

A chemical element with symbol Co and atomic number 27. It is found naturally only in chemically combined form. The free element, produced by reductive smelting, is a hard, ...

cobalt

Science; General science

A lustrous, silvery-blue metallic chemical element, Co, with an atomic number of 27 and an atomic weight of 58.93. Metallic cobalt was isolated in 1735 by the Swedish scientist G. ...

cobalt

Metals; Metallurgy

Chemical symbol Co. Element No. 27 of the periodic system; atomic weight 58. 94. A gray magnetic metal, of medium hardness; it resists corrosion like nickel, which it resembles ...

cobalt

Medical; Health care; Medicine

A trace element that is a component of vitamin B12. It has the atomic symbol Co, atomic number 27, and atomic weight 58.93. It is used in nuclear weapons, alloys, and pigments. ...

cobalt

Mining; General mining; Mineral mining

A tough, lustrous, nickel-white or silvery-gray, metallic element. Symbol, Co. Occurs in the minerals cobaltite, smaltite, and erythrite; often associated with nickel, silver, ...

inductive reactance

Aviation; Aeronautics

An opposition to the flow of alternating current or changing direct current, caused by inductance in the circuit. Inductive reactance, whose abbreviation is XL, is measured in ...

interstate air transportation

Aviation; Aeronautics

The carriage by aircraft of persons or property as a common carrier for compensation or hire, or the carriage of mail by aircraft in commerce: # Between a place in a State or the ...

class of thread

Aviation; Aeronautics

A method of classifying the fit of threads used in bolts and nuts. A class-1 fit is a loose fit, a class-2 fit is a free fit, a class-3 fit is a medium fit, a class-4 fit is a ...

sonic cleaning

Aviation; Aeronautics

A method of cleaning delicate mechanical parts. The parts are placed in a sonic cleaning machine and covered with a cleaning fluid. High-intensity sound waves are produced in the ...

ultrasonic cleaning

Aviation; Aeronautics

A method of cleaning mechanical components by vibrating them at an ultrasonic frequency while soaking them in a cleaning solution.

electroplating

Aviation; Aeronautics

A method of coating one kind of metal with another. Cadmium is often plated on steel to make it corrosion resistant, and chromium can be plated on steel to make it hard and wear ...

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