- 産業: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
A material used to provide a bond between two surfaces by chemical means. The adhesive wets the surfaces, and as it dries, it pulls the surfaces tightly together.
Industry:Aviation
A material used to remove paint from a surface. Paint stripper contains very strong solvents in a wax-like vehicle which prevents the solvents from evaporating before they can soak into the paint film.
Most paint strippers soften a lacquer film, so it can be wiped off. But rather than softening a film of enamel, the stripper penetrates it and causes it to swell. When the film swells, it wrinkles and breaks away from the surface on which it is applied. The wrinkled enamel is then scrubbed from the surface or washed off with steam or hot water.
Industry:Aviation
A material used to stop or slow the action of corrosion. To protect aluminum and magnesium alloys from corrosion, a tight, continuous oxide film is deposited on the surface. This film acts as a corrosion inhibitor.
Industry:Aviation
A material used to thin, or dilute, a concentrated material without changing its basic characteristics. A weak solution contains a large amount of diluent.
Paint thinner is a diluent used to make paint less viscous so it can be sprayed or brushed more easily. The diluent evaporates after the paint is applied.
Industry:Aviation
A material which has a magnetic permeability of less than one, less than that of a vacuum. A diamagnetic material is repelled by a magnet and will try to align itself across the lines of magnetic flux, rather than along them.
Industry:Aviation
A material whose electrical conductivity is between that of an insulator and a conductor. The electrical properties of a semiconductor are caused by its atomic structure and by the way the material has been processed.
Valence electrons are the electrons in the outer shell of an atom, and the number of valence electrons is the important characteristic of the atomic structure of a semiconductor material. Silicon and germanium, the two chemical elements most often used for semiconductor devices, both have four valence electrons.
An important step in the production of semiconductor materials is that of “doping,” which is the addition of minute amounts of other chemical elements, called impurity elements, which have either three or five valence electrons. Just a few parts per million of these impurity elements cause the semiconductor material to act as either a conductor or an insulator, depending upon the polarity of the voltage placed across it.
Industry:Aviation
A material whose internal structure holds it tightly in its original shape and size. A solid differs from a liquid, whose structure causes it to hold only its size, not its shape, and a gas, that holds neither its size nor its shape.
Industry:Aviation
A material whose outer shell (valence shell) electrons are held in the atom with a weak force and are therefore able to be moved from one atom to another with a small amount of electrical pressure. Most conductors have three or fewer valence electrons.
Industry:Aviation
A material whose outer shell electrons (valence electrons) are so tightly bound to the atom that they resist any force that tries to move them from one atom to another. Glass, mica, paper, ceramics, and certain types of plastic materials are used as insulators in electrical and electronic equipment.
Industry:Aviation
