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Soil corrosion monitoring near a pipeline under CP

Description: Electrochemical noise (EN), linear polarization resistance (LPR), and harmonic distortion analysis (HDA) were used with three-electrode probes to monitor the corrosion occurring in soil in dry and wet conditions near a gas pipeline under cathodic protection. The test site was a cathodic protection (CP) test station where impressed current CP was applied to a 2 in. (5.1 cm) diameter FBE coated steel pipe using an 84 in. (0.2 m) TA-2 high-silicon cast iron anode. Electrochemical measurements were… more
Date: January 1, 2005
Creator: Bullard, Sophie J.; Covino, Bernard S., Jr.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Locke, M. L. et al.
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Partner: UNT Libraries Government Documents Department
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High temperature electrochemical corrosion rate probes

Description: Corrosion occurs in the high temperature sections of energy production plants due to a number of factors: ash deposition, coal composition, thermal gradients, and low NOx conditions, among others. Electrochemical corrosion rate (ECR) probes have been shown to operate in high temperature gaseous environments that are similar to those found in fossil fuel combustors. ECR probes are rarely used in energy production plants at the present time, but if they were more fully understood, corrosion could… more
Date: September 1, 2005
Creator: Bullard, Sophie J.; Covino, Bernard S., Jr.; Holcomb, Gordon R. & Ziomek-Moroz, M.
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Partner: UNT Libraries Government Documents Department
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Electrochemical Noise Sensors for Detection of Localized and General Corrosion of Natural Gas Transmission Pipelines. Final Report for the Period July 2001-October 2002

Description: The U.S. Department of Energy, National Energy Technology Laboratory funded a Natural Gas Infrastructure Reliability program directed at increasing and enhancing research and development activities in topics such as remote leak detection, pipe inspection, and repair technologies and materials. The Albany Research Center (ARC), U.S. Department of Energy was funded to study the use of electrochemical noise sensors for detection of localized and general corrosion of natural gas transmission pipeli… more
Date: December 2002
Creator: Bullard, Sophie J.; Covino, Bernard S., Jr.; Russell, James H.; Holcomb, Gordon R.; Cramer, Stephen D. & Ziomek-Moroz, Margaret
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cathodic Protection of the Yaquina Bay Bridge

Description: The Yaquina Bay Bridge in Newport, Oregon, was designed by Conde B. McCullough and built in 1936. The 3,223-foot (982 m) structure is a combination of concrete arch approach spans and a steel through arch over the shipping channel. Cathodic protection is used to prevent corrosion damage to the concrete arches. The Oregon Department of Transportation (Oregon DOT) installed a carbon anode coating (DAC-85) on two of the north approach spans in 1985. This anode was operated at a current density of … more
Date: February 1, 2001
Creator: Bullard, Sophie J.; Cramer, Stephen D.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Russell, James H.; Laylor, H. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion prevention of Oregon's reinforced coastal bridges

Description: The Oregon Department of Transportation (Oregon DOT) maintains more than 120 coastal bridges; many are reinforced concrete structures over 15 m (50 ft) in length. Twelve of these bridges are historic structures. Oregon DOT is concerned about the ongoing deterioration of these bridges, rising maintenance and repair costs, and the need to protect Oregon’s large investment in coastal bridges. Over 80,000 m2 (850,000 ft2) of coastal bridge surface have been repaired and protected from further chlor… more
Date: June 1, 2004
Creator: Bullard, Sophie J.; Cramer, Stephen D.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Cryer. C.B (Oregon Dept. of Transportation, Salem, OR) et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Intermittent Cathodic Protection for Steel Reinforced Concrete Bridges

Description: Thermal-sprayed zinc anodes are used for impressed current cathodic protection (ICCP) systems on 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 to the average current density used to operate the systems. After a ICCP system is turned off, the rebar in the concrete remains passive and protected for a period of time. Intermittent operation of C… more
Date: January 1, 2002
Creator: Bullard, Sophie J.; Ziomek-Moroz, Margaret; Cramer, Stephen D.; Covino, Bernard S., Jr.; Holcomb, Gordon R.; Russell, James H. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Monitoring power plant fireside corrosion using corrosion probes

Description: The ability to monitor the corrosion degradation of key components in fossil fuel power plants is of utmost importance for Futuregen and ultra-supercritical power plants. Fireside corrosion occurs in the high temperature sections of energy production facilities due to a number of factors: ash deposition, coal composition, thermal gradients, and low NOx conditions, among others. Problems occur when equipment designed for either oxidizing or reducing conditions is exposed to alternating oxidizing… more
Date: January 1, 2005
Creator: Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R. & Ziomek-Moroz, M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Electrochemical corrosion rate probes for high temperature energy applications

Description: Electrochemical corrosion rate (ECR) probes were constructed and exposed along with mass loss coupons in a N2/O2/CO2/H2O environment to determine ECR probe operating characteristics. Temperatures ranged from 450 to 800 C and both ECR probes and mass loss coupons were coated with ash. Results are presented in terms of the probe response to temperature, the measured zero baseline, and the quantitative nature of the probes. The effect of Stern-Geary constant and the choice of electrochemical techn… more
Date: January 1, 2004
Creator: Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, M.; Cayard, M. S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Understanding the operation and use of high temperature electrochemical corrosion rate probes

Description: Electrochemical corrosion rate probes were constructed and tested along with mass loss coupons in a N2/O2/CO2 plus water vapor environment. Temperatures ranged from 450 to 600 C. Corrosion rates for ash-covered mild steel, 304L SS, and 316L SS probes using electrochemical techniques were a function of time, temperature, and process environment. Correlation between electrochemical and mass loss corrosion rates was good.
Date: January 1, 2004
Creator: Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, M.; Cayard, Michael S. (InterCorr International Inc.) et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion probes for fireside monitoring in coal-fired boilers

Description: Electrochemical corrosion rate (ECR) probes were constructed and exposed along with mass loss coupons in a N2/O2/CO2/H2O environment to determine ECR probe operating characteristics. Temperatures ranged from 450 to 600 C and both ECR probes and mass loss coupons were coated with ash. Results are presented in terms of the probe response to temperature, the measured zero baseline, and the quantitative nature of the probes. The effect of Stern-Geary constant and the choice of electrochemical techn… more
Date: January 1, 2004
Creator: Covino, Bernard S., Jr.; Bullard, Sophie J.; Cramer, Stephen D.; Holcomb, Gordon R.; Ziomek-Moroz, Margaret; Eden, David A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion probes for fireside monitoring in coal-fired boilers

Description: Corrosion probes are being developed and combined with an existing measurement technology to provide a tool for assessing the extent of corrosion of metallic materials on the fireside in coal-fired boilers. The successful development of this technology will provide power plant operators the ability to (1) accurately monitor metal loss in critical regions of the boiler, such as waterwalls, superheaters, and reheaters; and (2) use corrosion rates as process variables. In the former, corrosion dat… more
Date: January 1, 2005
Creator: Covino, Bernard S., Jr.; Bullard, Sophie J.; Ziomek-Moroz, M. & Holcomb, Gordon R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Performance of Zinc Anodes for Cathodic Protection of Reinforced Concrete Bridges

Description: Operation of thermal spray zinc (Zn) anodes for cathodic protection (CP) of reinforced concrete structures was investigated in laboratory and field studies conducted by the Albany Research Center (ARC) in collaboration with the Oregon Department of Transportation. The purposes of the research presented in this report were: evaluate the need for preheating concrete to improve the adhesion of the anode; estimate the service life of thermal spray Zn CP anodes; determine the optimum thickness for Z… more
Date: March 1, 2002
Creator: Covino, Bernard S., Jr.; Cramer, Stephen D.; Bullard, Sophie J.; Holcomb, Gordon R.; Russell, James H.; Collins, W. Keith et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Corrosion in a temperature gradient

Description: High temperature corrosion limits the operation of equipment used in the Power Generation Industry. Some of the more destructive corrosive attack occurs on the surfaces of heat exchangers, boilers, and turbines where the alloys are subjected to large temperature gradients that cause a high heat flux through the accumulated ash, the corrosion product, and the alloy. Most current and past corrosion research has, however, been conducted under isothermal conditions. Research on the thermal-gradient… more
Date: January 1, 2003
Creator: Covino, Bernard S., Jr.; Holcomb, Gordon R.; Cramer, Stephen D.; Bullard, Sophie J.; Ziomek-Moroz, Margaret & White, M.L. (Convanta)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High temperature corrosion research at the Albany Research Center

Description: The Severe Environment Corrosion and Erosion Research Facility (SECERF) at the Albany Research Center is operational. SECERF consists of 6 modules that share the availability of up to 10 different gases to produce environments for high temperature corrosion and erosion research. Projects to be conducted in the modules include: corrosion sensors for fossil energy systems, thermal gradient effects on high temperature corrosion, the development of sulfidation resistant alloys, determination of the… more
Date: January 1, 2002
Creator: Covino, Bernard S., Jr.; Holcomb, Gordon R.; Russell, James H.; Cramer, Stephen D.; Bullard, Sophie J.; Ziomek-Moroz, Margaret et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced titanium processing

Description: The Albany Research Center of the U.S. Department of Energy has been investigating a means to form useful wrought products by direct and continuous casting of titanium bars using cold-wall induction melting rather than current batch practices such as vacuum arc remelting. Continuous ingots produced by cold-wall induction melting, utilizing a bottomless water-cooled copper crucible, without slag (CaF2) additions had minor defects in the surface such as ''hot tears''. Slag additions as low as 0.5… more
Date: January 1, 2001
Creator: Hartman, Alan D.; Gerdemann, Stephen J.; Schrems, Karol K.; Holcomb, Gordon R.; Argetsinger, Edward R.; Hansen, Jeffrey S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced Combustion

Description: Topics covered in this presentation include: the continued importance of coal; related materials challenges; combining oxy-combustion & A-USC steam; and casting large superalloy turbine components.
Date: March 5, 2013
Creator: Holcomb, Gordon R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Advanced Combustion

Description: The activity reported in this presentation is to provide the mechanical and physical property information needed to allow rational design, development and/or choice of alloys, manufacturing approaches, and environmental exposure and component life models to enable oxy-fuel combustion boilers to operate at Ultra-Supercritical (up to 650{degrees}C & between 22-30 MPa) and/or Advanced Ultra-Supercritical conditions (760{degrees}C & 35 MPa).
Date: March 11, 2013
Creator: Holcomb, Gordon R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Synergistic air port corrosion in kraft recovery boilers

Description: Localized hot corrosion can occur on the cold-side of air-ports in Kraft recovery boilers. Depending on the basicity of the molten salt, either acidic or basic fluxing takes place, with a solubility minima at the transition between the two reactions. For stainless steel, if the basicity of the fused salt is between the iron and chromium oxide solubility minima, then a synergistic effect can occur that leads to rapid corrosion. The products of one reaction are the reactants of the other, which e… more
Date: August 1, 2001
Creator: Holcomb, Gordon R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Effect of Manganese Additions on the Reactive Evaporation of Chromium in Ni-Cr Alloys

Description: Chromium is used as an alloy addition in stainless steels and nickel-chromium alloys to form protective chromium oxide scales. Chromium oxide undergoes reactive evaporation in high temperature exposures in the presence of oxygen and/or water vapor. The deposition of gaseous chromium species onto solid oxide fuel cell electrodes can reduce the efficiency of the fuel cell. Manganese additions to the alloy can reduce the activity of chromium in the oxide, either from solid solution replacement of … more
Date: October 20, 2004
Creator: Holcomb, Gordon R. & Alman, David E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Steam Oxidation at High Pressure

Description: A first high pressure test was completed: 293 hr at 267 bar and 670{degrees}C; A parallel 1 bar test was done for comparison; Mass gains were higher for all alloys at 267 bar than at 1 bar; Longer term exposures, over a range of temperatures and pressures, are planned to provide information as to the commercial implications of pressure effects; The planned tests are at a higher combination of temperatures and pressures than in the existing literature. A comparison was made with longer-term lite… more
Date: July 19, 2013
Creator: Holcomb, Gordon R. & Carney, Casey
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Task 1 Steam Oxidation (NETL-US)

Description: A first high pressure test was completed: 293 hr at 267 bar and 670{degrees}C; A parallel 1 bar test was done for comparison; Mass gains were higher for all alloys at 267 bar than at 1 bar; Longer term exposures, over a range of temperatures and pressures, are planned to provide information as to the commercial implications of pressure effects; The planned tests are at a higher combination of temperatures and pressures than in the existing literature. A comparison was made with longer-term lite… more
Date: August 28, 2013
Creator: Holcomb, Gordon R. & Carney, Casey
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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