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PPG Chromate-Free Primer, Pretreatment on Boeing Next-Generation 737, and VIDEO
A chromate-free metal pretreatment and an exterior decorative primer are now standard on Boeing Next-Generation 737 production airplanes. Watch video of the 737 being built in 3 minutes!
WatchCorrosion Under Powder Coating
We’re facing problems in powder coating on sheets of cold-rolled closed annealed parts. We found that, after some days, the color is peeling off, and we have found corrosion beneath that. We do a three-in-one cleaning process and then powder coat at our job shop. Our product is an acoustic enclosure of a diesel generator set, so we are using polyester powder for sun resistance. Is there a solution, or should we switch to another process?
Read MoreAdhesive Removal from Aluminum
My company is having problems removing adhesives from aluminum plate that is used for salt spray testing. We are using Alkleen 002L cleaner and Deox NC-620 deoxidizer.
Read MoreInline Aluminum Foil Cleaning
I would like to degrease 0.003-0.010-inch aluminum foil inline before I punch and sheet. Can you point me toward someone who makes this type of equipment and related chemistry?
Read MoreTroubleshooting the Pretreatment and Paint Process
We had finished parts sectioned, mounted, polished and examined under a microscope with the hopes of identifying deficiencies within our coating system that cause premature failure. One of the items brought up are oxides trapped within scratches and scale texture under the e-coat. The substrate is hot-rolled-steel (recycled steel) bar that has been steel shot blasted then put through the standard cleaning process prior to e-coating. Have you ever heard of or seen steel shot blasting driving oxides into small crevices or texturing natural to hot-rolled steel? We cannot seem to figure out why these oxides are still present after shot blast and pickling.
Read MoreLeast-Expensive Finish System
One of our customers is inquiring about the least expensive, most easily applied and most corrosion resistant finish system for steel parts. He needs to have good protection against the effects of seaside atmospheres. The parts will be exposed to temperatures ranging from -50ºF to 150ºF. Appearance is not an issue here, just cost and lasting corrosion protection.
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Ask An Expert: Blistering of Anodic Coating on 7075 Alloy
Q. We are facing a blister problem on 7075 alloy inside the bore diameter of our cylinder base. We noticed that this problem is occurring during dyeing process and not after hard anodizing. Can you please advise us what could be the reason? S.C.
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Material Science of Electrodeposits - The 23rd William Blum Memorial Lecture (1982)
Four aspects of material science pertinent to electroplating are considered in this, the text of the 23rd William Blum Lecture, presented by the 1981 recipient of the AES Scientific Achievement Award. The discussion addresses the ways in which epitaxy, twinning, dislocations and nucleation and growth of electrodeposits determine the deposit structure, which, in turn, is influenced by the deposition variables and the composition of the plating solution. The effects of structure on properties such as adhesion, brightness, corrosion resistance, ductility, electrical conductivity, hardness, internal stress, leveling capability, magnetics, strength and wear resistance are considered.
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NASF Connecticut Chapter Holding Supplier Exhibition March 6
All proceeds at the event are used to sponsor the Connecticut Branch’s College Scholarship, which is given to a child of a Connecticut Branch member.
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Growth of ZnO Nanorod Arrays on Flexible PDMS Substrates
In this work, well-aligned zinc oxide (ZnO) nanorods were successfully deposited on flexible polydimethyl-siloxane (PDMS) substrates by a simple hydrothermal growth method. The low temperature (<100°C) synthesized ZnO nanorods were investigated by scanning electron microscopy (SEM), x-ray diffraction (XRD) and photoluminescence (PL) spectroscopy. The results indicate that the average diameter of a ZnO nanorod was 161±10 nm. The highly crystalline and uniform ZnO nanorods on flexible PDMS show luminescent properties with an emission wavelength at 450 nm. It is anticipated that the low temperature deposition of ZnO on PDMS may have significant potential application in flexible optical devices.
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