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Laser surface roughening of PTFE has also been studied as a potential method for increasing bond strength to PTFE. In one study, Rauh et al. treated PTFE with a pulsed ArF laser at 193 nm. Multiple pulses were required to achieve a uniform roughness across the surface due to inhomogeneity of the untreated material.
Corona treatment (sometimes referred to as air plasma) is a surface modification technique that uses a low temperature corona discharge plasma to impart changes in the properties of a surface. The corona plasma is generated by the application of high voltage to an electrode that has a sharp tip. The plasma forms at the tip.
Surface modification is the act of modifying the surface of a material by bringing physical, chemical or biological characteristics different from the ones originally found on the surface of a material. [1] This modification is usually made to solid materials, but it is possible to find examples of the modification to the surface of specific ...
Phosphate conversion coating is a chemical treatment applied to steel parts that creates a thin adhering layer of iron, zinc, or manganese phosphates to improve corrosion resistance or lubrication or as a foundation for subsequent coatings or painting. [ 1 ][ 2 ][ 3 ] It is one of the most common types of conversion coating.
Chipseal. Chipseal (also chip seal or chip and seal) is a pavement surface treatment that combines one or more layers of asphalt with one or more layers of fine aggregate. In the United States, chipseals are typically used on rural roads carrying lower traffic volumes, and the process is often referred to as asphaltic surface treatment.
Chromate conversion coating or alodine coating is a type of conversion coating used to passivate steel, aluminium, zinc, cadmium, copper, silver, titanium, magnesium, and tin alloys. [ 1 ]: p.1265[ 2 ] The coating serves as a corrosion inhibitor, as a primer to improve the adherence of paints and adhesives, [ 2 ] as a decorative finish, or to ...
Corona treatment is a surface modification method using a low temperature corona discharge to increase the surface energy of a material, often polymers and natural fibers. Most commonly, a thin polymer sheet is rolled through an array of high-voltage electrodes, using the plasma created to functionalize the surface.
Black oxide or blackening is a conversion coating for ferrous materials, stainless steel, copper and copper based alloys, zinc, powdered metals, and silver solder. [ 1 ] It is used to add mild corrosion resistance, for appearance, and to minimize light reflection. [ 2 ] To achieve maximal corrosion resistance the black oxide must be impregnated ...