Conversion coatings (phosphate layer) of aluminium
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- Typical parameters of the process
| Process | Temperature [°C] | Heat transfer medium | Residence time | Chemicals | Concentration | Details | Literature |
| Alkali phosphoting of aluminium | 40-70 (can be lowered to 25-35°C with special bath comeditions) | 5-10 sec | Aluminium, phosphate and fluoride solutions | 2-15 g/l | spaying of strip material | BAT for the surface treatment of metals & plastics, 2006 | |
| 1-3 min | spaying or dipping of individual parts |
