You are here:  ROBOT Wiki 

ROBOTCHEMIE WIKI

For further information about our products: simply click on the first letter of the term.

A

AOX value

AOX relates to organic halogens subject to absorption (the "X" is used in chemistry as a general abbreviation for any halogen). It is a group parameter for chemical analysis which is used primarily for evaluating water and sludge.

Aerosol

An aerosol is a suspension of fine solid particles or liquid droplets in a gas. The aerosol characteristics are always dependent on the particles and carrier gas. The word aerosol derives from the fact that matter "floating" in air is a suspension (a mixture in which solid or liquid or combined solid-liquid particles are suspended in a fluid).

Anodic degreasing

The same electrolytes are used in anodic degreasing as in cathodic degreasing. However, oxygen is formed here on the material. Metallic contamination (and often also base materials) are electrolytically dissolved.

Cathodic degreasing is more effective than anodic degreasing in electroplating, as double the amount of hydrogen than oxygen is formed at the same current. Due to the danger of hydrogen embrittlement, anodic switching is partially prescribed. In some cases, the degreasing polarity is reversed. Usually, cathodic switching is then used first before being reversed to anodic switching at the end.

Anodising

Anodising (including the Eloxal process, from the electrolytic oxidation of aluminium) is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of aluminium parts. In contrast to galvanised coatings, the protective layer is not applied to the workpiece. Instead , the process changes the microscopic texture and crystal structure of the metal near the surface. A layer measuring between 5 and 25 micrometers is then created, which protects against corrosion - the natural oxide layer of the aluminium is only a few nanometres thick.

Auxiliary flocculation agents

Auxiliary flocculation agents are used in all applications where a separation of solids and liquids is required. These agents are mostly organic, synthetic, high-molecular and water-soluble polyelectrolytes. Other synthetically-based or naturally-based organic polyelectrolytes can also be used as auxiliary flocculation agents.

Anti-corrosion protection

Anti-corrosion protection is used to describe all measures for avoiding damages to metallic parts as a result of corrosion. As absolute resistance to corrosion is not possible, preventative measures generally focus on offering sufficient protection against corrosive damages to parts within their normal service life.