Feature Articles

Full Seminar on REACH & Nickel Compounds
Learn More About the Impacts of REACH Legislation from The Nickel Institute.

Cr(III) Conversion Layers on Zinc and Zinc Alloys: Evolution and Perspectives
Trivalent chromium conversion layers have successfully replaced hexavalent conversion chromium on zinc and zinc alloys for many applications, especially in the automotive industry since the entry in force of the ELV directive. Different technologies are now used in order to provide conversion layers with desired corrosion resistance, aspect and friction properties. New regulations have been entered in force in Europe, such as REACH, which focus on toxic and especially carcinogenic, mutagenic and reprotoxic (CMR) substances. Cobalt salts are obviously within this scope and will be banned from conversion solutions. This paper will give an overview of the developments on conversion layers for the protective finishes industry.

Non-PFOS, Permanent Mist Suppressants for Hard Chromium Plating, Decorative Chromium Plating and Chromic Etch Applications
Mist suppressants are an important tool for reducing exposure of workers to Cr(VI) during plating and etching operations. A common raw material used for efficient mist suppressants was, and still is, PFOS. PFOS is subject to legislation across the world prohibiting its use for many applications. In this paper we will present developments and experiences with non-PFOS, permanent and non-permanent mist suppressants.

Development of Ni-Based High Wear Resistance Composite Coatings
Hard chromium has been used in automotive, aerospace, mining and general engineering industries due to its excellent wear resistance and low coefficient of friction.