Carbide.....

Carbide

Carbide: A chemical compound formed between carbon and a metal or metals, examples of those used in the Thermal Spray Process are Chromium Carbide and Tungsten Carbide

Carrier Gas

Carrier Gas: The gas used to carry powdered material from the powder feeder or hopper to the thermal spray gun

Cathode

Cathode: The electrode maintained at a negative electrical potential. In a plasma gun it is usually the rear electrode.

Cavitation erosion

Cavitation erosion: A form of erosion causing material to be removed by the action of vapour bubbles in a very turbulent liquid. Effects can be reduced via the application of ceramic coatings.

Cermet

Cermet: A physical blend of metal and ceramic powders.

Coating

Coating:
1. The act of building a thermal spray deposit on to a substrate
2. The spray deposit

Coating density

Coating density: A non standard term for the thermal spray coating density ratio.

Coating stress

Coating stress: The stresses in a coating resulting from rapid cooling of molten material or semi molten particles as they impact and adhere to the substrate.

Cold Spray

Cold Spray: or Cold Gas Dynamic spraying. This process uses the energy stored in a high pressure compressed gas in order to propel fine powder particles at very high velocities in order to form near 100% dense deposits.

Composite coating

Composite coating: A thermal spray coating consisting of two or more dissimilar spray materials which may or may not be layered.

Composite powder

See "Powder Composite"

Controlled Atmosphere Chamber

Controlled Atmosphere Chamber: An enclosure either filled with an inert gas or evacuated to below atmospheric pressure in which thermal spraying can be performed under controlled atmosphere conditions to minimize or prevent oxidation of the coating or the substrate.

Corrosion

Corrosion: Chemical or electrochemical reaction between a material and it’s environment which results in deterioration in the properties of the material.

Crushed Powder

Crushed Powder: Powder formed from a solid which is subsequently crushed and sized appropriately for the relevant spraying process.

 

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