Everyday living involves the use of electronic products, and the majority of these products must be coated before being sold. The magnetron sputtering vacuum coating system is the most popular vacuum coating tool today. We're coming up. Take a peek at the sputtering targets.Typically, we only use three different kinds of target materials: metal targets, alloy targets, and composite targets.
Hard disks use a variety of devices. Plating is done on the recording surface with multi-layer coatings. Each movie serves a different purpose. To improve adhesion and corrosion protection, 40nm thick chromium or chromium alloy plating will be applied to the bottom layer.Following this, a 35nm thick layer of cobalt alloy was added, which, as a magnetic material, can completely reflect the characteristics of magnetism and low interference. Finally, a 15nm thick layer of carbon film was added.Iron-nickel alloy is a common sputtering target for magnetic heads, and subsequently, new compound materials like iron nitride, iron tantalum nitride, iron aluminum nitride, etc., which are all top-notch magnetic dielectric film target materials, were added.
Aluminum film will be used as a reflective layer to be plated on plastic workpieces for CD discs, but since CDROM and DVDROM discs will have a layer of dye on them and the substance on aluminum is somewhat corrosive, it is typically replaced by gold or silver film.
The optical disc's film layer is also made up of a number of layers. On top of the dye layer, which contains amorphous rare earth transition elements, it is covered with an iron-cobalt alloy recording layer that is 30 nm thick, followed by a silicon nitride dielectric layer that is 20 to 100 nm thick. final layer is a metal reflective coating.
