.... The examination results proved negligible undercreep but significant delamination at 65 °C was observed on all four test materials. Cathodic disbondment testing also confirmed that viscoelastic materials will disbond under cathodic protection, but the extent of disbondment will vary between the different...

... esters and polyurethane coating samples generally cured quicker than the liquid epoxy sample at the low temperature of 0 °C, nevertheless the liquid epoxy coating sample demonstrated the best Cathodic Disbondment (CD) testing performance. Another superiority noted for the test epoxy coating...

...Abstract The cathodic disbondment susceptibility of coated offshore grade pipeline steel samples with a single holiday or a cut-back edge was investigated. Several accelerated conditions were used, including elevated temperature of 60°C or mechanical stress in the form of an elastic strain of 0.15...

..., adhesion strength, resistance to cathodic disbondment, and proper installation. The three composite repair systems successfully completed a 14-month field trial in a coastal sabkha area . The following paper highlights the ability of a composite system to handle harsh conditions when properly designed...

... for buried or immersion service is a combination of protective coatings and cathodic protection. However, when applied improperly, cathodic protection may result in damage to the protective coating. Cathodic disbondment testing evaluates a coating’s resistance to disbondment in the presence of cathodic...

... to extend the integrity of oil and gas facilities. This paper discusses some of the laboratory screening tests, such as the long-term ageing in hot-water at 75, 95, and 112 °C complemented with cathodic disbondment, mechanical, and thermal tests, involved in the qualification process of various FBE coatings...

... residual salt salt removal chemical rust creepage cathodic disbondment immersion resistance INTRODUCTION It is a common practice to use dry abrasive blasting to clean steel surfaces before maintenance coating application. In offshore or coastal corrosive environments, blasted (dry and wet) steel...

... and the performance of the coating was evaluated using pull-off adhesion strength, cathodic disbondment and Atlas cell wet thermal gradient tests. The strength of correlations among the roughness parameters and the FBE coating performance results were compared. Tortuosity, measured with a stylus profilometer...

... on the coating itself if not properly applied. Cathodic disbondment testing is used to measure a coating's susceptibility to loss of adhesion to the substrate due to cathodic polarization. NACE recently published a new cathodic disbondment test method, TM0115-2015, Cathodic Disbondment Test for Coated Steel...

... in high temperature high chemical-resistant ambient cure tank liners will be described. Various performance aspects of experimental and commercial benchmarks will be compared, including multiple chemicals immersion tests at high temperature, electrochemical impedance spectroscopy, cathodic disbondment...

...Epoxy-coated reinforcement cathodic disbondment electrode area INTRODUCTION Epoxy-coated steel reinforcement (ECR) is used for corrosion durability improvement of concrete structures in marine and deicing salt environment. The polymer coating is supposed to be a physical barrier to aggressive...

... of delamination after standardized cathodic disbondment laboratory tests. coatings delamination blisters non-destructive testing IR thermography inductive excitation optical excitation cathodic disbondment Delta-T-test INTRODUCTION Table 2 Excitation Parameters for Thermographic Analysis Optical...

... and physical mechanical testing are discussed as test methods to validate and predict long term stability and projected life expectancy for in-service on operating pipelines. Arrhenius Cathodic Disbondment Accelerated Thermal Aging Hot Water Immersion (HWI) Oxidation Induction Time (OIT) Dynamical...

..., pretreatment of the substrate and surface profile. Abstract Cathodic Disbondment (CD) testing has historically been performed on protective coatings to assess coating delamination resistance when exposed to cathodic polarization. Unfortunately, there is no broadly accepted high temperature CD testing standard...

... different CD cell configurations and the results obtained from the online measurements were compared with postmortem analysis. Results and Discussion The test was carried out for a period of 120 days. After the test, the concrete coating was removed and the cathodic disbondment area of the anticorrosion...

... with four mainline coatings have been evaluated using cathodic disbondment (CD), impact, flexibility, pull-adhesion, and hot-water immersion tests. The test panels had both mainline and girthweld coatings and were prepared by removing a portion of previously applied mainline coating and applying a girthweld...

...The corrosion potentials at different locations across the experimental pipe section were individually monitored. To facilitate this, electrical connection was made through a connection at one end of the experimental pipe section. The cathodic disbondment (CD) test is commonly used for determining...

...To perform cathodic disbondment testing, a 3% Instant Ocean^®sea salt solution was used as the immersion solution. The Mg alloy anodes supplied each test panel with an average polarization potential -1.55 volt vs. Cu/Cu SO₄ for 30 days_. According to the DOE matrix...

... with the cathodic disbondment test (CD test). Additionally CD test provides information about the quality of the surface pretreatment and hence is an important test for the quality control of pipe coatings. The first ASTM standard (ASTM G8) for the test procedure was released in the 60s of the last century. ¹...

...A customer was interested in evaluating a specific coating system for downhole oil production tubing and had a test protocol that included cathodic disbondment. Coupons were provided for testing at a test laboratory selected by the customer. The coating system discussed in this paper includes three...