Electroplating
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 MoreElectroless Nickel on Tungsten
Can one apply electroless nickel over a tungsten metal matrix?
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Plating Q&A: Electroless Nickel on Tungsten
Can one apply electroless nickel over a tungsten metal matrix? Art Kushner answers the question.
Read MoreTin Lead Plating
Is it possible to plate a cold-rolled steel part with a minimum 5–7 percent lead content tin plate?
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Back from the Brink of Finishing Death
Alpha Metal Finishing is celebrating its 36th anniversary and, after battling the ups and downs of sales, coupled with tumultuous management practices and the untimely illness of company founder Bob Wood that almost forced the its extinction, the company is recording unprecedented growth.
Read MoreDeFelsko Launches Cloud-Based Thickness Gages and Inspection Instruments
New wireless features enable users to synchronize readings with its cloud-based website, download updates with the latest features and functionality, and wirelessly communicate any wireless-connected device.
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Plating Bath Parameters Affecting the Performance of Zinc-Nickel Alloys for Post-Plate Fabrication
In recent years, the demand for increased corrosion protection of ferrous substrates has significantly increased. Zinc-nickel alloy plating systems are being chosen to meet this need. Often these component parts are subjected to post-plate forming and fabrication processes. Ductility, hardness, and stress were thought to be important physical properties to maintain the integrity of the zinc-nickel deposit during these forming processes. To achieve these goals, the following operating parameters were found to be important: the donor type and denticity of the chelate, the chelate-to-total metal mole ratio and the secondary brightener concentration.
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Caterpillar Is Back on the Coatings Prowl
Caterpillar has been developing and applying advanced wear coatings to extend the service life and performance of its machine components, whether new or remanufactured, for decades. Now Caterpillar’s advanced wear coatings are available to others through Cat Remanufacturing, including turnkey coating and finishing.
WatchA 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.
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