AMPP Store - NACE Conference Papers

Available for download

Characterization of Coating Performance in Various Natural Exposure Environments

Product Number: 41205-201-SG

Author: S.L. Sampson, J.P. Repp, J.A. Ellor, J.P. Ault, C.L. Farschon

Publication Date: 2005

$20.00

The subject paper presents updated inspection data from a Federal Highway Administration study of the effect of local environments on the degradation of alternative bridge coating materials. Exposure data covers up to nine years of service in several diverse environments, including sites representative of marine, industrial, and rural service environments. Paint deterioration is characterized as the result of local atmospheric parameters, time of wetness, and airborne contaminants

Available for download

Characterization of Corrosion Inhibitor With Contact Angle Measurement

Product Number: 51321-16287-SG

Author: Susumu HIRANO/Ayano YASUI/ Hirotaka MIZUKAMI/Toshiyuki SUNABA

Publication Date: 2021

$20.00

Available for download

Characterization of Metal Dusting Corrosion of Ni-Based Alloy NiCr30Al2 and its Weldment under High Pressure Condition

Product Number: 51319-13258-SG

Author: Bingtao Li

Publication Date: 2019

$20.00

Metal dusting is a severe failure mechanism of metallic materials when expose to industrial process environments containing high carbon activity. There have been many studies on the metal dusting behavior of alloys in 1 atm environments. Very recent laboratory-scale studies conducted at DECHEMA have shown that alloys are apt to undergo significantly higher metal dusting attack under high-pressure conditions. The current study analyzes the metal dusting behavior of Ni-based alloy NiCr30Al2 tested under 19 bar total pressure at 620 °C. Of particular interest is the mechanism by which a higher pressures favors the initiation of dusting attack. It will also be shown that the surface as welded of the alloy is more prone to dusting attack than the surface of the as-processed wrought alloy and the ground weldment.

Available for download

Characterization of Microbiologically Influenced Corrosion Potential in Nitrate Injected Produced Waters

Product Number: 51319-13198-SG

Author: Mohita Sharma

Publication Date: 2019

$20.00

Microorganisms are notorious for being involved in serious metal infrastructure damage popularly known as microbiologically influenced corrosion (MIC). Long term corrosion incubations (~2 years) with carbon steel (CS) beads were established using produced water collected from a Canadian oilfield where nitrate was routinely used for souring mitigation.Experiments were set up under methanogenic sulfate-reducing and nitrate-reducing conditions to stimulate electrical MIC (EMIC) with iron present as the sole electron donor.Microbial community analysis chemical measurements metal weight loss and surface analysis were conducted to assess EMIC under these different conditions. After 2 years incubations in the nitrate-reducing environment did not show surface damage to the carbon steel beads nor substantial weight loss (2-3%). However incubations in the sulfate-reducing environment showed 10-16% weight loss with severe pitting on the CS beads and community sequencing revealed the predominance of known acid producers (MesotogaandAcetobacterium) and methanogens (Methanosaeta). Incubations in the methanogenic environment showed comparatively less weight loss (2-6%) though surface analysis revealed an abundance of pinhole-like pits; microbial communities were dominated by putative syntrophs (PetrimonasandPseudomonas) and a known methanogen(Methanosaeta). In addition to the establishment of new EMIC enrichment cultures this study demonstrated that the localized effect of MIC cannot be accurately assessed solely using weight loss corrosion assays but additionally requires microscopic and surface studies along with an understanding of the microbial community composition.

Available for download

Characterization Of Newly Developed High Interstitial Non-Magnetic Stainless Steels For Oil And Gas Applications.

Product Number: 51321-16706-SG

Author: Clara Herrera; Merlin Seifert; Philipp Niederhofer

Publication Date: 2021

$20.00

Available for download

Characterization of Novel High Performance Material UNS N08034

Product Number: 51319-13156-SG

Author: Helena Alves

Publication Date: 2019

$20.00

The changing material demands in the chemical processing and related industries calls for new and more performing materials. UNS N08034 is a new super-austenitic stainless steel alloyed with about 27 % chromium and 6.5 %-molybdenum. Further it has an intended addition of nitrogen for austenite stability and strength. The aim of this work is to present a comprehensive characterization of this material which is the best in class in the corresponding alloy group and therefore of high interest for applications in severe corrosive environments of the process industry. Along with the main material properties such as chemical composition microstructure mechanical properties thermal stability corrosion resistance and fabricability several examples of application will be described. To approach the influence of fabrication on the material properties base materials studies are exemplarily complemented with results from welded and from cladded samples.Key words: UNS N08034 2.4692 UNS N08031 NiCrMoFe alloy 6-Mo steel mechanical properties corrosion resistance fabricability sensitization weldments cladding

Available for download

Characterization of Sulfur-assisted Degradation in Alloy 800

Product Number: 51319-13489-SG

Author: Suraj Persaud

Publication Date: 2019

$20.00

Crack initiation testing was performed on Alloy 800 (Fe-33Ni-21Cr) blunt-notched tensile specimens exposed to 0.5 mol/kg sulfate solutions at 280 °C with pH(280°C) 3. These conditions were anticipated to produce a variety of sulfur-assisted degradation phenomena in Alloy 800 for the purpose of analytical TEM characterization. Initial imaging of the notch of Alloy 800 tensile specimens revealed a combination of environmentally-assisted cracking (EAC) intergranular corrosion (IGC) and pitting corrosion occurring up to approximately 50 μm in depth. Electron energy loss spectroscopy (EELS) and energy dispersive x-ray spectroscopy (EDX) of EAC revealed a mixture ofTiandCr-rich oxides witha sulfur layer at the oxide-metal interface either incorporated in the oxide or as a sulfide compound associated with Ti.EELS and EDX characterization of pitting corrosion indicated only minor oxide formation at the pit-metal interface withclear identification of a nano-scale sulfur layer at the pit-metal interface accompanied by a relatively low concentration of oxygen and major alloying elements. The sulfur layer could indicate adsorption of sulfur on the bare metal with near complete surface coverage during pitting which effectively limits lateral oxide growth and accelerates metal dissolution in the underlying region. Further details on the mechanistic interpretation of results will be discussed.

Available for download

Chelating Agents for Iron Sulfide Scale Removal at 300°F (149°C)

Product Number: 51320-14859-SG

Author: Raja Ramanathan , Hisham A. Nasr-El-Din

Publication Date: 2020

$20.00

Iron sulfide scales create well deliverability and integrity problems such as reduced production rates and damage to well tubulars. Chelating agents have scarcely been studied for iron-sulfide dissolution. This paper evaluates EDTA, DTPA, and HEDTA for its iron sulfide (FeS) dissolution capacity and kinetics at 300°F (149°C).

A comparative study of the chelating agents with a low pH (3-5), moderate pH (5-9), and high pH (9-14) determined the optimum pH for the scale treatment. These tests were conducted in glass bottles and a high-temperature autoclave apparatus under anoxic conditions. Results show that the iron-sulfide dissolution increases tremendously at 300°F (149°C) when using chelating agents with a pH>5. At 300°F (149°C), the bond strength is reduced, allowing the chelating agents to remove the metal ion from the solid surface. The ranking of the chelating agents in terms of iron-sulfide scale dissolution capacity and effectiveness was DTPA>EDTA>HEDTA at all pH conditions. The role of chelating agents in iron sulfide dissolution at 300°F (149°C) has not been thoroughly investigated. There is no study that reports the optimum treatment time at that temperature. This paper investigates chelating agents and provides the optimum dissolver composition and treatment time for field operations at high temperature conditions.

Available for download

Chemical Agent Resistant Coating (CARC) – How the US Marine Corps Paints their Tactical Equipment

Product Number: 41212-707-SG

Author: Andrew Sheetz

Publication Date: 2012

$20.00

The US Marine Corps (USMC) uses the various paints within the specifications that makeup the CARC system on their vehicles and weapon systems. Their use includes new system acquisition, field repair, major repaint activities and during complete system rebuild at the depots.

Available for download

Chemical Cleaning for the Corrosion Studies of Open-Cell Aluminum 6101 Foams

Product Number: 51321-16911-SG

Author: Rogine Gomez; Ho Lun Chan; Kevin Guo; Alessandro Pereya; and Vilupanur Ravi

Publication Date: 2021

$20.00

Available for download

Chemical Compatibility Testing of an Engineered Composite Repair System with 98% Sulfuric Acid at Various Temperature Levels

Product Number: 51319-13436-SG

Author: Matt Green

Publication Date: 2019

$20.00

A research and development program was undertaken to create a composite material repair system which was compatible with high concentrations of sulfuric acid up to 98%. The initial results of the program showed great promise in reaching a level of compatibility with the aggressive chemical and further testing and validation was required. The next level of testing was to include the effects of increasing temperature of the operating conditions on the compatibility of the system with 98% sulfuric acid.This testing program originated because of the demanding conditions found in most chemical processing facilities. Many requests for compatibility information between the pipe contents and the composite repair materials have been fielded from the industry with sulfuric acid in high concentrations (up to 98%) being a routine chemical in question thus the testing project was developed and completed.This paper will present the results obtained as well as insights gained throughout this research and development program in detail with regard to chemical compatibility with sulfuric acid at high concentrations and different temperature ranges evaluated.

Available for download

Chemical Inertness, Reproducibility And Coke Deposition For Coated And Non-Coated AISI 347 Tubes

Product Number: 51321-16623-SG

Author: Micael Presa Aller/ Sanjay Lodha/ Andres Tomás Aguayo/ Ana Guadalupe Gayubo

Publication Date: 2021

$20.00

NACE Conference Papers

Association for Materials Protection and Performance