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Stripping Metallic Coatings
The stripping of electrodeposited and flame-sprayed coatings is a necessary part of surface finishing. Stripping may be required to allow for the re-plating of a part rejected due to defective finishing or as part of rework processes such as those commonly conducted by airline/aerospace facilities. This paper discusses stripping methods and operational considerations in their use.
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Characterization of Electroless Deposition of Ni-P-Al2O3 and Ni-P-TiO2 from Alkaline Hypophosphite Baths in the Presence of Gluconate as a Complexing Agent
Electroless deposition of Ni-P-Al2O3 and Ni-P-TiO2, in the presence of gluconate as a complexing agent, on copper substrates was studied. The dependence of the composite formation on different plating variables was investigated. The deposited coatings were characterized using different techniques, including energy dispersive x-ray spectroscopy (EDX), x-ray diffraction (XRD), scanning electron microscopy (SEM), hardness and corrosion resistance testing. The amount of particles incorporated in the coatings increased with increasing particle concentration in the bath. However, the particle size greatly affected the amount incorporated. The addition of these particles changed the microstructure of the Ni-matrix, and enhanced the hardness and corrosion resistance.
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Electronic Precision Specialties Wins 'Metal Finishing Model Shop Award'
The California/EPA Department of Toxic Substances and Control has recognized Electronic Precision Specialties, Inc., with the "Metal Finishing Model Shop Award," only the fourth shop to receive the award.
Read MoreASK AN EXPERT: Corrision Resistance
Q. What should we change to enhance our salt spray results?
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Deburring Change Earns 'Find-It Fix-It Challenge' Award
Award recognizes and rewards simple and effective workplace solutions that result in increased productivity, improved worker morale, and fewer workplace injuries and illnesses.
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PPG Aerospace Donates Coatings to Restore V-22 Osprey Aircraft for Museum
One of six Bell Boeing V-22 Osprey tiltrotor combat aircraft used for full-scale development has been restored with coatings donated by PPG Industries' PPG aerospace business for display at the American Helicopter Museum and Education Center in West Chester.
WatchCorrosion Resistance
We need some reasonable corrosion protection for out parts, and our powder coating is failing in salt spray testing after nearly 300 hours. What should we change to enhance our salt spray results?
Read MoreFood-Grade Powder
We are producing bins used to collect used cooking oil, which is used as a component in preparing animal feed. The customer asked me to provide a “Food Grade Certificate” for the powder coating material used. What should I ask my coater for?
Read MorePops in the Coating
We are having a problem with a large number of fine and very dense pinholes popping up in our powder coating as it cures.
Read MoreOptions for Outdoors
We want to provide more powder coated products for outdoor use, but we do not want to get into zinc phosphate or chrome. Can we achieve good results on steel parts if we use a primer, and if so, how do we need to process the parts?
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