The list below showing 25 active volcanoes in the Philippines was based on the PHIVOLCS list with some included from the GVP. The number is not definite and depends on someone's definition of active or historical timeframe. Descriptions under Eruption were based on the GVP website.
PVD: Process flow diagram. Physical vapor deposition (PVD) describes a variety of vacuum deposition methods which can be used to produce thin films. PVD uses physical process (such as heating or sputtering) to produce a vapor of material, which is then deposited on the object which requires coating.PVD is used in the manufacture of items which require thin films for mechanical, chemical or electronic reasons.nside the Plasma Spray-Physical Vapor Deposition, or PS-PVD, ceramic powder is introduced into the plasma flame, which vaporizes it and then condenses it on the (cooler) workpiece to form the ceramic coating.
This high-temperature bath will be used to generate vanadium carbide coatings. A lot of confusion exists in the stamping and forming industries about tool coating processes. The most widely used coating processes are physical vapor deposition (PVD), chemical vapor deposition (CVD), and thermal reactive diffusion (TRD).