Inorganic treatments

Metallic - Chrome

Coating through the electroplating of metals.

This type of coating is made through the electroplating of metals over the substrate to protect. The applied coating is functional, giving the part resistance to corrosion, as well as aesthetic, as its able to apply a shiny or matt finishes.

MUGAPE has all necessary types of nickel to obtain the best resistances against corrosion, being able to make both the duplex system as well as the microporous. In many cases it handles the previous preparation of these materials performing the vibration, polish or mechanization operations.

The base materials over which the coating are made are the following:
  • Iron and alloyed steel of all kinds.
  • Stainless steels.
  • Copper, brasses and all types of copper alloys.
  • Injected and extruded aluminum.
  • Other materials if requested by client.


Anodized Aluminum.

Anodized aluminum is a coating of alumina obtained through the oxidation of aluminum surfaces. The layer obtained mainly provides hardness and resistance to abrasion. The alumina formed during the anodization is anhydrous and porous, with great absorbing power. This is a property that can be used to dye them, introducing to its pores either organic or mineral pigments.

Anodized Magnesium.

Anodized magnesium is a coating of periclase and forsterite obtained though the oxidation of magnesium surfaces. The layer obtained stabilizes the magnesium, reducing notably its tendency to corrode.

These types of anodizations are made following the norm UNE-EN-12373 equivalent to norm MIL-A-8625F. The execution of technical or hard anodizations is also offered, is a higher resistance to abrasion if needed or you intend to improve the superficial properties of the coating.

Application of ceramics to anodized metals.

Elaboration of a proprietary technology for the application of decorative ceramic coatings to anodized parts.


Chemical conversion of the metallic (steel) part in a metallic phosphate.

The phosphatic process is a chemical conversion of the metallic (steel) part in a metallic phosphate. These processes are made as a general norm following the guidelines of the norm DIN-50942 and UNE-EN-12476, unless the client specifies its own norm.

According to the application needed, this phosphate can be of several kinds:
  • Zinc: It's used as an anti-corrosive coating. In MUGAPE, we have two versions of this finish, the phosphatic microcrystalline of zinc and the phosphatic crystalline of zinc. The zinc phosphate is also used to make deformities in cold through the posterior application of molykote or soap, with which you get a lubricant film that favors the formation of the part.
  • Calcium Zinc: It's used as a preparation previous to the adhesive over the parts that will be vulcanized later.
  • Manganese: It gives the piece a smaller friction coefficient, and it acts as an anti-seize.
  • Iron: Also called amorphous, it serves as an adherent base for paints.



Passivates are made over aluminum and stainless steel.

Aluminum Passivate (Chromital).

Chromital is a passivate without hexavalent chromium for aluminum and its alloys. It presents a similar behavior to the passivates with hexavalent chromium. The treatments comply with the specifications MIL-DTL-81706 and MIL-5541 of the aeronautical sector and it can be used as a base for the painting. The layering comes to be insignificant from 0,1 to 0,5 g/m2 and the resistance to corrosion can be 300 hours in neutral saline fog.

Stainless Steel Passivate.

The stainless steel passivate is used to improve its resistance to corrosion. In this process, it also improves it visual aspect since the husk remains are eliminated. It's a treatment that doesn't alter the dimensions of the piece. It can also be applied to the refractory alloys of nickel and cobalt.