The processes of surface treatments, more formally surface engineering, tailor the surfaces of engineering materials to
Ultimately, the functions and/or service lives of the materials can be improved.
Common surface treatments can be divided into two major categories: treatments that cover the surfaces and treatments that alter the surfaces.
|Treatments Covering Surfaces|
Organic Coatings: The organic coatings apply paints, cements, laminates, fused powders, lubricants, or floor toppings on the surfaces of materials.
Inorganic Coatings: The inorganic coatings perform electroplatings, autocatalytic platings (electroless platings), conversion coatings, thermal sprayings, hot dippings, hardfacings, furnace fusings, or coat thin films, glass, ceramics on the surfaces of the materials.
|Treatments Altering Surfaces|
Hardenings: Selective hardenings can be done by flame, induction, laser or electron beam.
High Energy Treatments: Common high energy treatments include ion implantation, laser glazing/fusion, and electron beam treatment.
Thin Diffusion Treatments: Thin diffusion processes include Ferritic-nitrocarb, boronizing, and other high temperature reaction processes, e.g., TiC, VC.
Heavy Diffusion Treatments: Heavy diffusion processes include carburizing, nitriding, and carbonitriding.
Special Treatments: Some special treatments, such as cryo, magnetic, and sonic treatments, affect not only the surfaces but also the bulk materials.