Coating PVD (physical vapor deposition) is a plasma coating process that involves depositing thin solid layers of another material onto a surface or part in order to make it more durable.  Plastics, metals, ceramics, glass, and a number of other materials can be finished by plasma coating. This process can be found from textile manufacturing to make cotton fibers dirt repellant, to fuel tank manufacturing to make materials impenetrable and corrosion-resistant. One of the more common techniques to accomplish this process is plasma sputter deposition, which has its own separate entry here.