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Chemical mechanical polishing (CMP) (also called chemical mechanical planarization) is a process of smoothing surfaces with the combination of chemical and mechanical forces. It can be thought of as a hybrid of chemical etching and free abrasive polishing. [ 1 ]
Chemical-mechanical polishing, which is used in semiconductor fabrication; Fabrication and testing of optical components; Flame polishing, a type of polishing used on glass and thermoplastics; Ultra-fine, abrasive paste polishing, polishing for soft or fragile work surfaces; Vapor polishing, a method of polishing plastics to optical clarity
Knife sharpener in Kabul, Afghanistan (1961) The Knife Grinder by Massimiliano Soldani (c.1700), Albertinum, Dresden A railway camp cook sharpens a knife blade on a stone wheel, 1927 Knife sharpening is the process of making a knife or similar tool sharp by grinding against a hard , rough surface, typically a stone , [ 1 ] or a flexible surface ...
The abrasive particles bonded to the grinding wheel will help to electrically insulate the space between the grinding wheel and workpiece. [ 6 ] [ 7 ] An equation giving the material removal rate for an electrochemical grinding process is provided in [ 5 ] and is stated here as:
Electropolishing, also known as electrochemical polishing, anodic polishing, or electrolytic polishing (especially in the metallography field), is an electrochemical process that removes material from a metallic workpiece, reducing the surface roughness by levelling micro-peaks and valleys, improving the surface finish.
The condition of the material at hand determines what type of abrasive will be applied. The first stage, if the material is unfinished, starts with a rough abrasive (perhaps 60 or 80 grit) and each subsequent stage uses a finer abrasive, such as 120, 180, 220/240, 320, 400 and higher grit abrasives, until the desired finish is achieved.