Pre-Treament - Manganese and Zinc Phosphate Coating

Surface Pre-Treatment - Zinc & Manganese Phosphating

Phosphating is a conversion coating, applied by Surface Technology (Australia) via immersion at temperature. The chemical reaction which takes place allows the formation of a layer of insoluble, crystalline phosphates to form on the surface of the component.

You may know the phosphating process using it's other alternative names - Parkerizing, or Phosphatizing. These coatings can be applied to substrates manufactured from mild steel or cast iron.

Zinc & Manganese Phosphate - The Benefits

Phosphating can be carried out on a component, in conjunction with oiling, as a coating in it's own right. This will increase it's resistance to corrosion, and in the case of Manganese Phosphate, increase it's resilience against adhesive wear.

However, it is normally carried out by us as a pre-treatment prior to the application of further surface coatings, as it creates an effective adhesive layer for dry film lubricants, fluoropolymers and paints.

Phosphating - Key Properties

Properties which zinc and manganese phosphating imparts upon the component it is applied to include;

  • 1. Uniform, Smooth, Thin Film deposit.
  • 2. Corrosion Resistant - when additional topcoats are applied.
  • 3. Friction Reduction.

Typical uses for phosphating are subsea oil & gas industry dry film lubricants; fasteners; thrust washers; gears and bearings.