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Understanding the Effects of NaCl Concentration on Zinc Phosphate Pigment Morphology and Composition by Advection Through Phenoxy Thermoplastic Free Films

Understanding the Effects of NaCl Concentration on Zinc Phosphate Pigment Morphology and Composition by Advection Through Phenoxy Thermoplastic Free Films
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Corrosion is a major concern for all materials during their service lives. In particular, salts such as sodium chloride (NaCl) are known to promote corrosion and detrimentally affect coating performance. Understanding how NaCl affects water uptake into a film and its interactions with corrosion-inhibiting pigments is important for developing the next generation of anticorrosive coatings. 

Product Number: 41216-946-SG
Author: Robert C. Bennett, Greg Curtzwiler, Christina Konecki, Dilhan Fernando, James W. Rawlins
Publication Date: 2016
Industries: Coatings , Coatings and Linings
$0.00
$20.00
$20.00

Corrosion is a major concern for all materials during their service lives. In particular, salts such as sodium chloride (NaCl) are known to promote corrosion and detrimentally affect coating performance. Understanding how NaCl affects water uptake into a film and its interactions with corrosion-inhibiting pigments is important for developing the next generation of anticorrosive coatings. Energy Dispersive Spectroscopy was employed to qualitatively determine the presence of NaCl in coating free films after immersion in aqueous NaCl solutions. The results correlated well with Inductively Coupled Plasma (ICP) data of the same solutions for the amount of sodium lost during immersion, but not for the chloride. ICP also detected the presence of zinc and phosphate ions that had leached from the coating.

Corrosion is a major concern for all materials during their service lives. In particular, salts such as sodium chloride (NaCl) are known to promote corrosion and detrimentally affect coating performance. Understanding how NaCl affects water uptake into a film and its interactions with corrosion-inhibiting pigments is important for developing the next generation of anticorrosive coatings. Energy Dispersive Spectroscopy was employed to qualitatively determine the presence of NaCl in coating free films after immersion in aqueous NaCl solutions. The results correlated well with Inductively Coupled Plasma (ICP) data of the same solutions for the amount of sodium lost during immersion, but not for the chloride. ICP also detected the presence of zinc and phosphate ions that had leached from the coating.

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Understanding the Effects of NaCl Concentration on Zinc Phosphate Pigment Morphology and Composition by Advection Through Phenoxy Thermoplastic Free Films
Available for download

Understanding the Effects of NaCl Concentration on Zinc Phosphate Pigment Morphology and Composition by Advection Through Phenoxy Thermoplastic Free Films

Product Number: 41215-879-SG
Author: Robert C. Bennett, Greg Curtzwiler, Christina Konecki, Dilhan Fernando, James W. Rawlins
Publication Date: 2015
$20.00

Corrosion is a major concern for all materials during their service lives. In particular, salts such as sodium chloride (NaCl) are known to promote corrosion and detrimentally affect coating performance. Understanding how NaCl affects water uptake into a film and its interactions with corrosion-inhibiting pigments is important for developing the next generation of anticorrosive coatings. 
Unique Application of an Epoxy Repair Gel to Eliminate Draft Tube Surface Wear and Cavitation, potentially Improving Turbine Power Generation Efficiency
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Unique Application of an Epoxy Repair Gel to Eliminate Draft Tube Surface Wear and Cavitation, potentially Improving Turbine Power Generation Efficiency

Product Number: 41216-976-SG
Author: Norm Klapper
Publication Date: 2016
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A unique project was completed in Mid-2014 at the Powerhouse #3, Turbine Unit #23 refurbishment, Grand Coulee Dam, located in Washington State. The project scope includes a complete overhaul of the turbine bearings, windings, and critical components. As part of the overall scope, the contractor was charged with the task of coating the entire draft tube surface with an epoxy gel. The Bureau of Reclamation, based in Denver, Colorado, had conducted a site survey which indicated severe wear lines, which result in cavitation and the accompanying backpressure on the exiting water outflow to the Columbia River. 
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Use of Waterjetting in Conservation of Historic Structures

Product Number: 41205-205-SG
Author: Joseph Sembrat, Lydia Frenzel
Publication Date: 2005
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Water, steam, and waterjetting have long been used in the conservation of historic artifacts and structures such as the R.M.S. Titanic and the  Saturn V Rocket  at  Johnson Space  Center.  Integral to the conservation is the removal of loose material, reduction in salts and corrosion, retention of coatings and desirable patina, and repair of damaged areas.
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