... of the application of an alternative technique: zinc thermally sprayed as sacrificial anode for internal protection of welded joints. Corrosion thermal spray zinc cathodic protection INTRODUCTION Transportation of corrosive fluids in pipelines Pipelines carries water for different reasons. Eventually, its...

...Sealants Applied to the Thermal Spray Five different sealants were applied to the thermal spray: Clear lithium silicate (LS) sealant - water-based sealant capable of withstanding high temperatures (Aremco ^† ) Clear water-based sealant - single component polymeric sealant designed...

... for bleached chemithermomechanical pulp (BCTMP) high-yield pulp is costly, and required scheduling for maintenance and replacement. Nickel-chromium thermal sprays can be used to protect wear sleeves in this environment because of their resistance to abrasion and aqueous corrosion. The formation of acetic...

... paint. There are also worker safety issues such as exposure to solvents and isocyanates. To address these issues, top-coated thermal spray zinc coating systems were investigated as a promising environmentally friendly corrosion protection for carbon steel in an acidic launch environment. Additional...

... and platelets welded to steel substrates in corrosion-susceptible areas NiCrMo alloys applied by thermal spraying (high velocity arc spraying) Solid corrosion resistant alloys in selected areas cladding duplex stainless steel geothermal stress corrosion cracking thermal spray weld overlay STRUCTURING...

...To develop coatings formulations that extend the life of low-alloy steel superheater tubes with thermal spray coating. To develop an improved understanding of the substrate and corrosion mechanisms. To replace corrosion resistant alloy superheater tubes with low-price, thermal spray coated...

... are susceptible to localized corrosion and environmentally assisted cracking when subjected to loads and temperatures approaching their material design limits. Conventional organic coatings provide limited mitigation due to their rapid degradation at elevated temperature. Whilst the use of thermally sprayed...

.... Application via traditional welding, such as used for the hardbanding of tool joints, is not acceptable due to potential fatigue failure from both metallurgical notches and dimensional changes from the heat of the process. The coating and thermal spray method of application described herein can be relied...

... that shot peening is beneficial and SCC is inhibited by anodic thermal spray metallic coatings. Stress corrosion cracking metallic coating 7075 Aluminum alloy thermal spray INTRODUCTION Aluminum alloys are largely used in aircraft structures. In fact, 80% of a typical transport/cargo airframe is made...

...A thermal sprayed zinc anode system protects the deck, prestressed beams and some cast-in-place beams. The anode alloy employed is ASTM B418, Type II. This is 99.9% pure zinc and limits other constituents, such as iron, to levels that do not interfere with performance as an anode. The anode was arc...

...Abstract Thermal-sprayed zinc anodes are used for cathodic protection (CP) systems in Oregon’s reinforced concrete coastal bridges to prevent chloride-induced corrosion damage. Thermal-sprayed zinc performs well as an ICCP anode but the service life of the zinc anode is directly related...

... was measured using ion chromatography analysis of incident precipitation and precipitation runoff from the surface of metal samples. Chloride deposition was measured on zinc, copper, lead, mild steel, and non-reactive blank panels, as well as two panels coated with thermal-sprayed zinc alloys. Chloride...

... of depth of cover. From review of all of the information gathered during the field investigation, it was recommended that the installation of CP systems would extend the useful life of the viaducts. cathodic protection concrete galvanic jacket anode prestressed thermal spray zinc INTRODUCTION...

... Spectroscopy (EIS) techniques. The corrosion response of the coating has been linked to the structure and the time for solution penetration can be determined using electrochemical signatures. corrosion thermal spray coating cermet INTRODUCTION Barrier coatings are applied to metal surfaces primarily...

...Abstract The long-term atmospheric corrosion performance of rolled zinc and three thermal-sprayed (TS) zinc materials (Zn, Zn-15Al, and Al-12Zn-0.2In) was characterized by measuring corrosion product concentrations in precipitation runoff at coastal marine and inland sites. Corrosion rates...

... The corrosion behaviour of WC-Co-Cr thermal-spray coatings has been given more attention lately due to their increased use in tribological applications where corrosion can occur. In this paper the mechanisms of corrosion of a WC-Co-Cr coating are presented with the focus on understanding the oxidation...

...-sprayed with aluminum to an average thickness of 0.20-0.25 mm (8-10 mils). The thermal-sprayed surface was then sealed with a low-viscosity epoxy preprime, 0.025 mm (1 mil) dry-film thickness (dft) followed by a moisture-cured urethane at 0.05 mm (2 mils) dft. The second set of these panels was coated...

...Thermally sprayed coatings are now used extensively in a variety of tribological, corrosion and tribo-corrosion applications^{[ 1 - 4 ]}. Previous studies involving ceramic plasma sprayed coatings^{[ 5 , 6 ]} have shown that good quality coatings, in terms of low porosity...

... in the weld overlay. The cladding should first be removed by arc gouging so that the overlay can be applied directly on the carbon steel substrate. Thermal Spray Coating for Protection Against Thinning Thermal spray coatings have been applied for protection of large surface areas in the wash zone...

... age. Abstract The aging of thermal spray (TS) cathodic protection (CP) anodes is usually characterized by the amount of current passing through the anode-concrete interface. This charge, also called electrochemical age, can be correlated to bond strength and eventual failure of TS Zn anodes. Several...