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Cobalt-Free Zinc and Zinc-Alloy Passivation
This article will detail an alternative to cobalt-containing trivalent chromium passivation. Field results from this unique passivate system have demonstrated comparable corrosion protection to existing cobalt-containing Cr(III)-based passivates. The new system is easy to handle and offers a broad operation range. The performance, appearance and passivation mechanism, as well as some limitations, will be discussed.
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Electroless Nickel Duplex Coatings Using RoHS-Compliant Systems
Duplex coatings can offer corrosion and wear resistance that exceed those of conventional electroless nickel (EN) deposits for specialty applications. Duplex coatings consisting of a high-phosphorus EN or a new ternary alloy underlayer and an upper layer of low-, low/mid- or mid-phosphorus electroless nickel were investigated. Wear, adhesion and corrosion resistance properties for numerous combinations of EN duplex coatings are presented here, both as-plated and after heat-treatment. Duplex coating results are compared with single layer EN deposits.
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A Pulse/Pulse Reverse Electrolytic Approach to Electropolishing and Through-Mask Electroetching
Research at the authors’ laboratories has focused on pulse/pulse reverse electrolysis on cathodic processes, such as hard chromium plating from non-hexavalent chemistries. This papers describes studies into pulse/pulse reverse electrolysis as applied to electrochemical metal removal processes, such as electropolishing and electroetching.
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A Conversation With ... Harry Moser, Reshoring Initiative
Founder of the Reshoring Initiative focuses on bringing work and jobs back to the U.S.
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Development of Ni-Based High Wear Resistance Composite Coatings
Hard chromium replacements have been actively sought for decades. In this, the Final Report for the AESF Foundation’s first Research Project since the formation of the NASF, the authors present the results of their extensive research into novel plating processes.
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Increasing Vibratory Efficiency by Optimizing the Choice of Media Shape Relative to Part Geometry
When choosing vibratory media, understand the size, shape, starting roughness condition and metallurgical structure of the part.
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Making the Grade With Mechanical Media
Understanding media grades is important to good mechanical finishes.
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Finishers can use free software to show that reshoring is about even to overseas
Finishing shops can show how keeping products in the U.S. is almost even to going overseas
Read MoreYes, We Have a PF App for That!
Download the PF app to your smart phone and you could win an X-Box Kinect! Just stop by booth No. 206 at Sur/Fin and show us the app on your phone!
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