Position: Home > News

Explanation of some terms about aluminum products

March 18, 2020

Terminology of aluminum profile

  • anodic oxidation: A chemical oxidation process.In this process, the surface of aluminum or aluminum alloys is usually converted into an oxide film, which has protective, decorative, or other functional properties.
  • natural oxidation: There is no artificially accelerated oxidation in the atmosphere.
  • hemical conersion: The treatment of metal aluminum in oxidizing chemical solution to produce chemical oxide film, formerly known as chemical oxidation.
  • anode: In electrolysis, an electrode that discharges with negative ions to produce positive ions or other oxidation reactions.
  • cathode: In electrolysis, an electrode that discharges with positive ions to form negative ions or other reduction reactions.


anodic oxidation aluminum

  • auxiliary electrode: In the process of electrolysis, the current is evenly distributed to obtain an additional anode or cathode for a uniform oxide film.
  • current density: Current intensity per unit area across the electrode surface.Generally expressed in amperes per square metre (A square metre) or amperes per square metre (A/d square metre).
  • critical current density: When the current density of a particular value is higher or lower than that value, different and sometimes unexpected electrode reactions occur.
  • current efficiency: The ratio of the effective current consumed in the formation of an oxide film during anodic oxidation to the theoretical current calculated in accordance with Faraday's law, usually expressed as a percentage.
  • anode efficiency: In the process of anodic oxidation, the ratio of the electric quantity used to produce the oxide film to the total electric quantity used.


critical current density

  • electrolysis: The process by which an electric current flows through an electrolyte to produce an electrochemical reaction on an electrode.
  • electorlyte: A conductive liquid medium in which an electric current is carried by ions.
  • throwing power: The ability of an electric current to be evenly distributed over an irregular electrode surface during electrolysis.
  • deionization: A method of removing ions from a solution by ion exchange.
  • activation:The surface has a transition from a blunt state to an active state.