surfin
Functional Trivalent Chromium Electroplating of Internal Diameters
This paper discusses recent research work on the development of a functional trivalent chromium plating process from a trivalent-based electrolyte to replace hexavalent chromium plating. Hexavalent chromium plating has been used for many years to provide hard, durable coatings with excellent wear and corrosion resistance properties. However, hexavalent chromium baths have come under increasing scrutiny due to the toxic nature of the bath, effects on the environment and workers’ health. In this paper are results from our development program aimed at achieving properties comparable to existing hexavalent chromium plating for functional applications. Specifically, recent efforts in plating chromium on the internal surfaces of cylindrical parts will be presented, as well as wear test data.
Read More
Non-chromated Conversion Coating for Magnesium Alloys and Zinc-Nickel Plated Steel
A novel hexavalent chromate-free conversion coating was developed to improve anti-corrosion and adhesive-bonding characteristics of the magnesium alloys and zinc-nickel (Zn-Ni) plated steel substrates. The corrosion behavior of the coated and uncoated alloys was investigated by neutral salt fog (NSF) and electrochemical corrosion tests. Surface wettability of the pretreated substrates was investigated by static contact angle measurements. Wet-tape adhesion tests verified that there is strong adhesion between the primer and the chem film-treated substrates. The morphology and composition of the coated surfaces were investigated by optical microscopy (OM), scanning electron microscopy (SEM) and energy dispersive x-ray spectroscopy (EDX) methods. This trivalent chromium-based surface treatment is a potential hexavalent chromate conversion coating replacement for magnesium alloys and Zn-Ni plated steel.
Read More
A Conversation With ... Steve Smith
The SUR/FIN shows in Chicago and Las Vegas the past two years have received good reviews from attendees and exhibitors. The man who led the NASF committee organizing SUR/FIN was Steve Smith, the vice president of sales and marketing for Process Technology, which designs and manufactures process heating and cooling equipment for the plating industry.
Read More
A Conversation With ... Jerry Wahlin
Jerry Wahlin received the NASF Silvio Taormina Award, an honor given to an individual who has performed outstanding service to the finishing industry.
Read More
Electrochemical Cell Geometry for Uniform Processing of Printed Circuit Boards
Faraday Technology has developed and patented an electrochemical cell geometry based on a novel flow mechanism for uniform processing (metallization or electroetching) of printed circuit boards.
Read More
Electrodeposition of Nanocrystalline Cobalt-Phosphorus Coatings as a Hard Chromium Alternative for Use in DoD Acquisition Programs
Electrolytic hard chromium plating (EHC) is a critical surface finishing technology that is used for applying functional coatings for corrosion and wear resistance to aircraft components in manufacturing operations and for re-build of worn or corroded components. However, EHC plating baths contain hexavalent chromium, which is a known carcinogen and environmental hazard. Therefore, the replacement of EHC in aircraft manufacturing activities and maintenance depots is a high priority for the U.S. Department of Defense (DoD).
Read More
A Conversation With ... Rick Dale, TV Host
Rick Dale is owner of Rick’s Restorations, a Las Vegas restoration shop that takes vintage appliances and machinery and restores them with new coatings for customers each week on the hit TV show American Restoration on the History Channel.
Read More
The Leading Edge Guide to Top Quality Anodizing using the Complete Spectrum Approach with a Universal Type I – II – III – (123) Mixed Electrolyte
This paper discusses a new advanced problem solving anodize technology for processing Types I, II and III anodize (A123) in a universal mixed electrolyte.
Read MoreThere’s No Business Like ‘Show Business’
Before you know it, most of us will be heading off to shows and conferences hosted by the various trade associations that service the finishing industry. Things actually kick off April 10–12 when the Electrocoat Association gathers in Orlando, Fla., for ECOAT 2012 (electrocoat.org), produced in partnership with Products Finishing.
Read More
