tailieunhanh - Materials Selection Deskbook 2011 Part 5

Tham khảo tài liệu 'materials selection deskbook 2011 part 5', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 48 Materials Selection Deskbook Differential Aeration-the stimulation of corrosion at a localized area by differences in oxygen concentration in the electrolytic solution that is in contact with the metal surface. Diffusion Coating-application of a metallic coating. The chemical composition of the metal is modified by diffusing the coating into the substrate at the metal s melting temperature. Electrogalvanizing-the process of galvanizing by electroplating. Electrolysis-a reaction in which chemical change results in an electrolyte being produced from the passage of electric current. Electrolyte-chemical constituent usually a liquid containing ions that migrate in an electric field. Electrolytic Cleaning method of degreasing descaling metal surfaces via electrolysis. The metal is utilized as an electrode. Electrophoretic Plating the production of a layer of deposit as a result of discharge of colloidal particles in solution onto an electrode. Electroplating the process of electrodeposition onto a metallic substrate of a thin adherent layer of a metal or alloy having desirable chemical physical and or mechanical properties. Exfoliation-also called lamination refers to the falling away of metal in layers. Filiform Corrosion type of corrosion that takes place under a film in the form of randomly distributed hairlines. Flame Plating-the deposition of a hard metal coating onto a substrate via application of molten metal at supersonic velocities. Flash Corrosion-light surface oxidation of cleaned metals that are exposed to the environment for short times. Fouling deposition of scale materials on metal surfaces. Galvanizing the method of coating iron or steel with zinc by immersion of the metal in a bath of molten zinc. Green Rot a corrosion product particular to nickel alloys and greenish in color that normally results from carburization and oxidation of certain nickel alloys at temperatures around 1000 C 1832 F . Hermetic Seal an impervious seal made by the fusion of .

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