Glossary

Abrasive Blasting

See preferred term Blasting.

Abrasive

Material such as sand, crushed chilled cast iron, crushed steel grit, aluminum oxide, silicon carbide, flint, garnet, of crushed slag used for cleaning or surface roughening.

Absorb.

To take in and engulf wholly.

Absorptive Lens (eye protection).

A filter lens designed to attenuate the effects of glare and reflected and stray light. See Filter Plate.

Acoustical Room

A soundproof enclosure, containing thermal spraying and sometimes related auxiliary equipment. Its design and construction prevent any unacceptable process noises from interfering with normal work in the environment surrounding the enclosure.

Adhesion

A binding force that holds together molecules of substances whose surfaces are in contact or near proximity.

Adhesive Strength

The magnitude of attractive forces, generally physical in character, between a coating and substrate. Two principle interactions that contribute to the adhesion are van der Waals forces and permanent dipole bonds.

Adsorb

To take in on the surface.

Air Cap

A device for forming, shaping and directing an air flow pattern for the atomization of wire or ceramic rod.

Air Cooler

See preferred term Workpiece Cooler.

Air Feed

A thermal spraying process variation in which an air stream carries the powdered surfacing material through the gun and into the heat source.

Air Filter

Mechanism for cleaning air of contaminants such as water, oil, and solid matter.

Alumina

A chemical compound (aluminum oxide);a ceramic used in powder or rod form in thermal spraying operations. May also be a blasting medium.

Anchoring

A supplemental method of locking the thermal spray deposit to the substrate by screw heads, studs, or similar means.

Anode

The electrode maintained at a positive electrical potential. In typical plasma thermal spraying gun designs, this is the front electrode, constructed as a hollow nozzle and usually fabricated from copper. In electric arc thermal spraying guns, one feed wire is the positive electrode.

Apparent Density Ratio

The ratio of the measured density of an object to the absolute density of a perfectly solid material of the same composition, usually expressed as a percentage.

Apparent Density Ratio

The ratio of the measured density of an object to the absolute density of a perfectly solid material of the same composition, usually expressed as a percentage.

Arc

A luminous discharge of electrical current crossing the gap between two electrodes.

Arc Chamber

The confined space within the plasma thermal spraying gun enclosing the anode and cathode, in which the arc is struck.

Arc Chamber

The confined space within the plasma thermal spraying gun enclosing the anode and cathode, in which the arc is struck.

Arc Force

The axial force developed by an arc plasma.

Arc Gas

The gas introduced into the arc chamber and ionized by the arc to form a plasma.

Are Gas

Primary. See preferred term Primary Gas.

Arc Gas

Secondary. See preferred term Secondary Gas. Arc Plasma. A gas that has been heated by an electric arc to at least a partially ionized condition, enabling it to conduct an electric current.

Arc Spraying (ASP)

A thermal spraying process using an arc between two consumable electrodes of surfacing materials as a heat source and a compressed gas to atomize and propel the surfacing material to the substrate.

Atomization

(1) The division of molten material at the end of the wire or rod into fine particles. (2) The process used in the manufacture of powder.

Auxiliary Cooler

A device used to direct compressed air to prevent overheating of the thermal spraying deposit or the substrate.

Request A Quote
Please complete this form and you will be contacted within the same business day.