BS ISO 7583:2013 pdf download

BS ISO 7583:2013 pdf download.Anodizing of aluminium and its alloys — Terms and definitions.
2.1.21
type III anodized aluminium
anodized aluminium produced by any process that forms a heavy, dense coating olspecified thickness
2.2 Finishes
2.2.1
Finish
characteristic of the surface of a product
2.2.2
matt finish
diffuse finish typicallyproduced by etching, blasting, rolling or brushingthe aluminium beloreanodizing
2.2.3
satin finish
fine-textured matt finish generally produced by etching or by rolling with specially ground rolls
2.2.4
scratch-brushed finish
matt or satin finish produced by abrasion with rotating wire brushes
2.2.5
texture
characteristic of the appearance of the surface of a product
2.3 Pretreatments
2.3.1
bright dipping
brief immersion in a solution used to produce a bright surface
2.3.2
brightening
production of a bright surface by chemical or electrochemical polishing
2.3.3
chemical brightening
chemical treatment to improve the specular reflectivity of a surface
2.3.4
chemical polishing
polishing ofan aluminium surface by immersion in a solution of chemical reagents
2.33
cleaning
removal of substances including oxide, pick-up, oil and grease from the surface of aluminium, which can negatively affect a subsequent surface treatment
EXAMPLE The cleaning of alummium coils is often carried out In an acid solution.
2.3.6
degreasing
cleaning (deprecated)
removal of substances including oil and grease from the surface of aluminium, which can negatively affect a subsequent surface treatment
EXAMPLE Degreasing Is often carried out by the use of an aqueous deergent,
2.3.7
desmutting
removal of loosely adhering smut from an aluminium surface
EXAMPLE Smut consisting of intermetallic compounds Insoluble In alkaline etch solutions can be removed by immersion in suitable acidic solutions such as nitric acid.
2.3.8
electrobrightening
electrochemical treatment to improve the specular rellectivity of a surface
2.3.9
electrograining
electrochemical treatment of aluminium normally in a hydrochloric or nitric acid solution using an alternating current to etch the surface
EXAMPLE This process is used before anodizing in the production of lithographic plates.
2.3.10
electrolytic etching
roughening of an aluminium surface by overall or selective dissolution in an acid or alkaline media with the aid ofan electric current
2.3.11
electropollshing
polishing of an aluminium surface by making it anodic in an appropriate electrolyte
2.3.12
etching
selective dissolution of the surface of aluminium in an aqueous solution to produce the required tinish. improve the surface appearance or prepare the surface for further treatment or for Inspection
2.3.13
pickling
removal of oxides or other compounds from the surface by chemical action
Note 1 to entry; The term is not normally used in the aluminium surface treatment industry except in the aerospace industry
2.3.14
pretreatment
surface treatment process or processes carried out before the anodic oxidation process
2.3.15
tunnel etching
electrochemical treatment of aluminium normally in a hydrochloric acid solution using an alternating current to etch the surface and produce an array of crystallographic tunnels
EXAMPLE This process Is used before anodizing In the production of electrolytic capacitors.
2.4 Anodic oxidation processes
2.4.1
a.c. anodizing
process to l)roduce anodized aluminium using an alternating current
2.4.2
anodizing
2.4.3
barrier film anodizing
barrier layer anodizing (deprecated)
anodizing process that produces a thin, non-porous anodic oxidation coating on aluminium
EXAMPLE This process is generally used in the production of electrolytic capacitors.
2.4.4
basket anodizing
barrel anodizing
anodizing of small parts (eg rivets) in a perforated basket
Note I to entry: The aluminium parts are pressed into the basket to form the anode and the acid electrolyte circulates between the parts.
2.4.5
chromic acid anodizing
anodizing in a chromic acid electrolyte
EXAMPLE This process is mainly used for aerospace applications
2.4.6
constant voltage anodizing
anodizing at a constant electrical potential
2.4.7
d.c. anodizing
process Lu pruducL dimdzed aluminium using d direct current
2.4.8
phosphoric acid anodizing
anodizing in a phosphoric acid electrolyte
EXAMPLE This process is sometimes used as a pretreatment before the application of an organic coating,
2.4.9
plasma anodizing
plasma electrolytic oxidation
PEO
micro-arc oxidation
MAO
spark anodizing
anodizingwhere dielectric breakdown constitutes an essential part ofthe mechanism of coating formation
2.4.10
sulfuric acid anodizing
anodizing in an electrolyte based on sulfuric acid
2.5 Anodic aluminium oxide
2.5.1
anodlc aluminium oxide
AAO
anodic oxidation coating either attached to or separated from its aluminium substrate
Note Ito entry: This term Is often used in nanotcchnology applications.