provides a wearing surface to the mat
Coating a diamond implies that the diamond materials in question are to be put to an industrial use, not a gem-stone use. You can read more about one purpose of coating a diamond, below.
Gather ferrous wear particles generated within the engine.
The purpose of slime coating is to protect the fish against disease, infection and minor damage.
Conformal coating is used to cover electrical wiring. It protects the wires from various elements such as dust, moisture, chemicals and extreme heat.
An enteric coating that covers medicinal pills is a barrier that controls where in the digestive system that the medicine will absorb. Which enteric coating on pills depends on where the medicine should be absorbed such as the stomach or small intestines.
Water based coating is unable to stuck onto the wall due to its poor cohesiveness nature.However, depending on what material are you using and for what purpose, certain water based coating can be stuck onto the wall.
The purpose of graphite coating called Aquadag coating is to absorb all the electrons that get diverted from their path while they are travelling coaxial to the CRT. These electrons are attracted towards the aquadag coating and returned to the anode accelerating anode.
Either for flavor, or texture, or appearance, or to keep the food moist through the cooking process.
painting is application of color to a surface and can be use for aesthetic use coating is application of to protect the underlaying surface such as FBE coating and meatal coating and powder coating
To make a porous material non-porous and seal it from stains, bacteria, color fading, etc...
The fluorescent coating is applied to materials like paper or fabric to make them appear brighter under ultraviolet light. It is commonly used for safety and security purposes, such as on currency notes, to help detect counterfeits.
The purpose of the metallic coating is mainly to shield the wearer from the hazardous solar radiation, like far UV and X-rays. Down here on the surface, we're shielded from that stuff by the Earth's atmosphere.